he told me that the code p0340 refers to the crank sensor but checking on the web found that it refers to the cam sensor, right?? please i need your help!!! what do you recommend me to do? and sorry for my english im from mexico and its been a while since i haven't written...
I need some help !!! my sunfire suffered a a heated, the car didn't start and the mechanic told me that its needs a re-ring, after the job was made the car did start but the computer gives a code p0340, the car makes explosions and has no power , we changed the cranck sensor, at the beggining the computer didn't give us a code but after a while the code came back, the mechanic told me that he checked the wiring conexions and they are ok he also checked the distribution chain and its is on time.
Thanks a lot for making this video, I saved my girlfriend a bundle by doing this replacement myself. The job was done on an '04 Dodge SX 2.0, only difference from this video to my own work on the car was the CPS used 4 8mm bolts, not the 10mm as stated in this vid.
Thanks for the video.. other than dropping one of the bolts and having to search for it endlessly, this went as smooth as the video and my 2004 Neon RT is back up and running again!
My LT1 firebird is giving me trouble starting... It just has a hard time getting fire. It will turn over and crank just fine, but it just takes time to get it to fire. Sometimes it will turn in 2-3 turns sometimes it takes 8-15 I was told it may be a bad cam sensor.
@SuRihtanil From what you are describing it could be a spark issue, but it would be very unusual. When you try to start it I want you to do two things. Before you crank it over, put a spark tester on it and then have a friend crank it. Watch the tester to see if you are losing spark. Next spray some starting fluid into the air intake and then see if it fires up. Let me know what happens and I will guide you the right direction.
I'd like to make one more post here, if there is anyone reading this who is thinking about purchasing a Dodge Neon i strongly recommend you do NOT buy one of these cars. I bought a used one and I've paid for it twice in repairs. One the other hand, I have a 81 Ford Courier that you just can't kill. I did have to replace the clutch but that's a given after so many years. These newer cars are such a pain to keep up.
Hey Mark, thanks so much for responding to my question. I changed out the CMP sensor and so far the car starts everytime. I'll have to see after about another 20 start attempts as to whether the problem is solved. Thanks again for your advice. Much appreciated.
i have a dodge neon 2003 that will start everytime for about 20 to 30 starts and then it won't start. after repeated attempts it will eventually start but it takes a while. could this sensor be the cause? thanks.
@dragonzen4 Check to see if you are loosing spark or fuel. Use a spark tester and a fuel pressure gauge. Try unplugging the CMP sensor. Check for spark allowing longer than normal crank time. The engine should start without the CMP sensor connected. If it does have spark now, either the timing belt has jumped or the CMP sensor is erratic.
I hope this helps, please let me know what you find or if you have any additional questions,
@markjhicks you say it should start w/o sensor. i have a plymouth breeze 2.0 sohc, no run, and i suspect cam sensor as i get code 54 form check engine light that equals to cam sensor problem. but does it has to run as you say that it not needs CMP...
@HarisTuubaa Honestly on your vehicle it can be either the crank or the cam sensor or both. The easiest way to check is to find someone with a scan and see if you have a signal. Otherwise you will need a labscope.
It is unusual, but at times the cam sensor can be defective without setting a code. What make, model and engine size is your vehicle? If I know this I can help you find the problem for the poor fuel mileage. Also has the performance also dropped?
can the cam sensor be bad but not throw an error code? my car has intermittent start problems and poor fuel economy ( about 175miles/tank). I've replaced the plugs/wires/coil sofar.
I'm trying to disconnect my camshaft sensor wires and I can't get the thing to budge on my 2003 dodge neon. I was wondering did u use the screw driver to push the bottom tab and using ur fingers to push it down? The area there doesn't have a lot of room :( thanks for the help"
Interesting, im working on a 2004 dodge neon and Im having a P0340 code indicating the camshaft sensor circuit problem. my dad suspects it could be the sensor, but I think it could be a bad connection.
I suspected it was due to a bad connection at the PCM because we had installed a factory cruise control kit into the car a couple thousand miles ago. But upon further investigation i found that the cruise control pins plug into the C3 connector and the camshaft position sensor plugs into the C2.
@asaultman67 I am not sure if he is right or not, but I am with you to check the connections on the PCM first. If the connections are OK, then the most probable cause for the code P0340 on your vehicle is the cam sensor. The only accurate test for the sensor is with a labscope, But if it is intermittent it may still be tough to pinpoint. I hope this helps, please let me know the result after you change the sensor.
I have replaced the sensor on the vehicle a couple of days ago and have driven the car about 200 miles since then. From what I can tell the problem seems to be resolved. At least I hope so, It could also be possible that one of the wires or connectors of the system are cracked internally. It's definitely weird considering there was no visible wear or damage on the old camshaft sensor. Usually you see some sign of it being melted or physically worn when electrical components fail.
@asaultman67 When the internal circuitry fails you will not see any external damage. That is why today's diagnostics is so challenging. It is also why it so important for a modern drivability technician to be fluent in the use of a lab scope. In the near future we will begin a series of lab scope training videos. Take care and I am happy to hear the cam sensor took care of the problem.
@donewitit2 This can be a real headache to pin down. The best way to check is with a labscope and look at the relationship between the cam and crank sensors. If you want to take a shot at it without a diagnosis, the crank sensor is a common failure. I also suggest checking around the battery area for a poor ground. It is fairly common for this to happen also. Stay in touch Mark Hicks
My 2.0 car has the engine check light coming and going, code being crankshaft sensor/timing belt. The engine sounds like it will cut out when i press the accelerator slightly, but sounds fine when i rev it harder. The car has cut out once when going around a corner not long after starting it. Sometimes when the check engine light is on accelerator is poor. Any help?
@markjhicks I used the method of counting the number of times the check engine light flashed and then looked it up on the error list i found on a Dodge Neon website. I dont know any other codes, sorry.
@alwaysblank To get the correct code you must have it retrieved with some type of scan tool or code puller that connects to the diagnostic connector. If you have an AutoZone near you they will retrieve the code with a code puller for free. I suggest going there and write the code down and let me know what it is before you replace any parts.
replacing a functioning sensor as preventative measure ??? the code doesn't mean the sensor has failed, it could be a spread terminal, broken wire, failed circuit in the PCM. Why guess, why not diagnose. Could you guarentee that a newly fitted sensor wouldnt potentially fail the next day ?
@markymark9172 We replaced the original sensor on a used vehicle before the vehicle was sold to help prevent problems during the warranty period. You are correct a P0340 does not mean the cam sensor has failed. There is no time in the video do we express this. We said when the sensor does fail the symptoms could include.Yes we do guarantee the sensor will not fail. If it does fail due to manufacture fault we will replace the sensor and also pay labor time and towing fees. Mark Hicks
@markjhicks ......covering costs, is not ever the same as guarenteeing a sensor wont fail. You are just guarenteeing if it fails in a waranty period it wont cost the customer anything apart from the time lost to get the vehicle recovered when it could be during a vital journey, getting the part fitted and either having to go pick up the vehicle or wait for it to be delivered back. My point is you are not guarenteeing the sensor wont fail, no one can do that.
@markymark9172 You are right no one can guarantee anything in life. No one knows what will happen. But if I was a betting man, my money would go on the new sensor to last longer. The original one has been on the vehicle for more than 100 thousand miles. This cam sensor is unique in that it is also the thrust plate for the cam shaft. Which means every time the engine is accelerated the shaft would at least rub against the sensor and many times hit it, hence deteriorating the integrity.
The fabric thing I am referring to is the thing you call a "Battery temperature sensor" at 1:24 , mine is white and totally corroded with holes in it...
Hey Ryan this is what the catalog Dept. had to say:
SU3187 is the only battery temp sensor that we show. Im not sure what he means by the giant fabric holder but our sensor appears to be by itself with nothing attached to it.
My battery temperature sensor harness is totally corroded. I had to cut the sensor out and tape it with electrical tape to the battery for the battery light to stop coming on. Where can I get a battery temperature sensor that attaches to the battery without the giant fabric holder?
In this cause it was because the sensor is located on the cylinder head. If the engine were hot you would burn your fingers...no other reason. Just to make it comfortable to work on.
hey mark, well, i own the famous for stalling "dodge avenger 99 2.5 v6......now,, it hasnt failed on me just yet, but it has stalled 2 times at red lights. it could be something else.....
what i would like to know is, changing the crankshaft sensor is just a remove and replace correct?
also, the cam pos sensor is built into the distributor correct? is that also a remove and replace? i have to make sure the rotor button is facing the same direction as the old one right?
It would be best to test the crank and cam sensors first...but you will need a lab scope to do that. However, the most common causes for your vehicle stalling is the crank sensor and distributor. When replacing the crank sensor, push down until the paper on the bottom makes contact with the trigger wheel, then tighten it down. To replace the cam sensor the distributor needs to be replaced. Mark the position of the rotor. I belive it has a dog eared gear and it can only go in two ways.
You are overlooking something that is very simple that can cause a stall when returning to idle at a light or such. The Idle Air Controll Valve/Motor can cause this as I have seen customers spend hundres on parts just to find it was this small inexspensive part that can be replaced in five min. Also I have seen the battery cause this type of concern. The battery acts as an electical spike damener and there is a votage spike when returning to idle that could cause this if there is a dead cell.
@50N1C800M Definitely better than expert village. It seems to me that anybody off the street can get on expert village. There was one video I saw on expert village where the kid, claiming to be ASE certified and speaking in an authoritative tone, was showing people how to tell whether or not a battery needs to be replaced. He did it wrong. The proper way involves putting a load on the battery. At no point did he do this. The test he did do was for "state of charge" and even that he did wrong.
@50N1C800M The test for "state of charge" tells you whether you need to charge the battery. But you first need to remove the surface charge. The kid in the video did not do this.
he told me that the code p0340 refers to the crank sensor but checking on the web found that it refers to the cam sensor, right?? please i need your help!!! what do you recommend me to do? and sorry for my english im from mexico and its been a while since i haven't written...
kuranyi211 4 days ago
I need some help !!! my sunfire suffered a a heated, the car didn't start and the mechanic told me that its needs a re-ring, after the job was made the car did start but the computer gives a code p0340, the car makes explosions and has no power , we changed the cranck sensor, at the beggining the computer didn't give us a code but after a while the code came back, the mechanic told me that he checked the wiring conexions and they are ok he also checked the distribution chain and its is on time.
kuranyi211 4 days ago
Thanks a lot for making this video, I saved my girlfriend a bundle by doing this replacement myself. The job was done on an '04 Dodge SX 2.0, only difference from this video to my own work on the car was the CPS used 4 8mm bolts, not the 10mm as stated in this vid.
NKode 3 weeks ago
@NKode Hey thanks for the great comment and the info!
Take Care,
Mark Hicks
Wells Vehicle Electronics
markjhicks 3 weeks ago
Thanks for this video. My SRT-4 is back on the road after ordering the part and installing. No more engine light, and no more P-0340 code!
SpectreRT4 2 months ago
@SpectreRT4 Glad we could help you out! Happy holidays to you and yours!
Mark Hicks
Wells Vehicle Electronics
markjhicks 2 months ago
I'm getting my neon a diagnostic check. I'm hoping this is the problem. Your video will def be used to make sure I do it right! Thanks!
stewomg 3 months ago
Thanks for the video.. other than dropping one of the bolts and having to search for it endlessly, this went as smooth as the video and my 2004 Neon RT is back up and running again!
royjoebob 6 months ago
@royjoebob I know what you mean about dropping bolts, the magic of editing doesnt allow that to happen :). Happy to hear the video helped you!
Mark Hicks
Wells Vehicle Electronics
markjhicks 6 months ago
My LT1 firebird is giving me trouble starting... It just has a hard time getting fire. It will turn over and crank just fine, but it just takes time to get it to fire. Sometimes it will turn in 2-3 turns sometimes it takes 8-15 I was told it may be a bad cam sensor.
SuRihtanil 8 months ago
@SuRihtanil From what you are describing it could be a spark issue, but it would be very unusual. When you try to start it I want you to do two things. Before you crank it over, put a spark tester on it and then have a friend crank it. Watch the tester to see if you are losing spark. Next spray some starting fluid into the air intake and then see if it fires up. Let me know what happens and I will guide you the right direction.
Mark Hicks
Wells Vehicle Electronics
markjhicks 8 months ago
I'd like to make one more post here, if there is anyone reading this who is thinking about purchasing a Dodge Neon i strongly recommend you do NOT buy one of these cars. I bought a used one and I've paid for it twice in repairs. One the other hand, I have a 81 Ford Courier that you just can't kill. I did have to replace the clutch but that's a given after so many years. These newer cars are such a pain to keep up.
dragonzen4 8 months ago
Hey Mark, thanks so much for responding to my question. I changed out the CMP sensor and so far the car starts everytime. I'll have to see after about another 20 start attempts as to whether the problem is solved. Thanks again for your advice. Much appreciated.
dragonzen4 8 months ago
@dragonzen4 You are most welcome, it sounds like you have it, but keep me posted if anything changes. Nice work!
Mark Hicks
Wells Vehicle Electronics
markjhicks 8 months ago
i have a dodge neon 2003 that will start everytime for about 20 to 30 starts and then it won't start. after repeated attempts it will eventually start but it takes a while. could this sensor be the cause? thanks.
dragonzen4 8 months ago
@dragonzen4 Check to see if you are loosing spark or fuel. Use a spark tester and a fuel pressure gauge. Try unplugging the CMP sensor. Check for spark allowing longer than normal crank time. The engine should start without the CMP sensor connected. If it does have spark now, either the timing belt has jumped or the CMP sensor is erratic.
I hope this helps, please let me know what you find or if you have any additional questions,
Mark Hicks
Wells Vehicle Electronics
markjhicks 8 months ago
@markjhicks you say it should start w/o sensor. i have a plymouth breeze 2.0 sohc, no run, and i suspect cam sensor as i get code 54 form check engine light that equals to cam sensor problem. but does it has to run as you say that it not needs CMP...
HarisTuubaa 8 months ago
@HarisTuubaa What year is your breeze?
Mark Hicks
markjhicks 8 months ago
@markjhicks year 1997...
HarisTuubaa 8 months ago
@HarisTuubaa Honestly on your vehicle it can be either the crank or the cam sensor or both. The easiest way to check is to find someone with a scan and see if you have a signal. Otherwise you will need a labscope.
Or just change one and take a shot at it.
Best of luck, I hope this info helps some,
Mark Hicks
Wells Vehicle Electronics
markjhicks 8 months ago
@markjhicks Just info - for this case it was cam sensor. Changed it yesterday and car started fine instantly. Thnx for your input and prompt replies.
HarisTuubaa 8 months ago
@HarisTuubaa Excellent thanks for the update! I am happy you got her going.
Mark Hicks
Wells Vehicle Electronics
markjhicks 8 months ago
It is unusual, but at times the cam sensor can be defective without setting a code. What make, model and engine size is your vehicle? If I know this I can help you find the problem for the poor fuel mileage. Also has the performance also dropped?
Mark Hicks
Wells Vehicle Electronics
markjhicks 9 months ago
can the cam sensor be bad but not throw an error code? my car has intermittent start problems and poor fuel economy ( about 175miles/tank). I've replaced the plugs/wires/coil sofar.
DragnKn1ght 9 months ago
Are there any videos on the 1999 Chrysler 300m 3.5L
Felix19911973 1 year ago
@Felix19911973 I am sorry we do not at this time.
Mark
markjhicks 1 year ago
I'm trying to disconnect my camshaft sensor wires and I can't get the thing to budge on my 2003 dodge neon. I was wondering did u use the screw driver to push the bottom tab and using ur fingers to push it down? The area there doesn't have a lot of room :( thanks for the help"
jj1ca 1 year ago
@jj1ca Yes when it was in the vehicle we used a screw driver to start it. Just be careful, if you force it with the screw driver it will break.
Just take it slow.
Mark
markjhicks 1 year ago
Interesting, im working on a 2004 dodge neon and Im having a P0340 code indicating the camshaft sensor circuit problem. my dad suspects it could be the sensor, but I think it could be a bad connection.
I suspected it was due to a bad connection at the PCM because we had installed a factory cruise control kit into the car a couple thousand miles ago. But upon further investigation i found that the cruise control pins plug into the C3 connector and the camshaft position sensor plugs into the C2.
asaultman67 1 year ago
So after inspecting the PCM and the connectors, im now wondering if he was right.
asaultman67 1 year ago
@asaultman67 I am not sure if he is right or not, but I am with you to check the connections on the PCM first. If the connections are OK, then the most probable cause for the code P0340 on your vehicle is the cam sensor. The only accurate test for the sensor is with a labscope, But if it is intermittent it may still be tough to pinpoint. I hope this helps, please let me know the result after you change the sensor.
Mark Hicks
Wells Manufacturing
markjhicks 1 year ago
@markjhicks
I have replaced the sensor on the vehicle a couple of days ago and have driven the car about 200 miles since then. From what I can tell the problem seems to be resolved. At least I hope so, It could also be possible that one of the wires or connectors of the system are cracked internally. It's definitely weird considering there was no visible wear or damage on the old camshaft sensor. Usually you see some sign of it being melted or physically worn when electrical components fail.
asaultman67 1 year ago
@asaultman67 When the internal circuitry fails you will not see any external damage. That is why today's diagnostics is so challenging. It is also why it so important for a modern drivability technician to be fluent in the use of a lab scope. In the near future we will begin a series of lab scope training videos. Take care and I am happy to hear the cam sensor took care of the problem.
Mark Hicks
Wells Manufacturing L.P.
markjhicks 1 year ago
This has been flagged as spam show
i have a trouble code po 339 crankshaft position sensor a ckt intermittent on 03 dodge stratus 2.4 dohc how do i fix this
donewitit2 1 year ago
my car says po339 cranshaft position sensor a ckt intermittent on a 03 dodge stratus how do i fix it
donewitit2 1 year ago
@donewitit2 This can be a real headache to pin down. The best way to check is with a labscope and look at the relationship between the cam and crank sensors. If you want to take a shot at it without a diagnosis, the crank sensor is a common failure. I also suggest checking around the battery area for a poor ground. It is fairly common for this to happen also. Stay in touch Mark Hicks
markjhicks 1 year ago
My 2.0 car has the engine check light coming and going, code being crankshaft sensor/timing belt. The engine sounds like it will cut out when i press the accelerator slightly, but sounds fine when i rev it harder. The car has cut out once when going around a corner not long after starting it. Sometimes when the check engine light is on accelerator is poor. Any help?
alwaysblank 1 year ago
@alwaysblank I can help you best if you can give me the year, make, model and the number of the code.
Mark
markjhicks 1 year ago
@markjhicks 1999, dodge neon, code 11 - thanks
alwaysblank 1 year ago
@alwaysblank Code 11 is not a code for an OBDII vehicle like yours. The code should start with a P and have 4 numbers after it.
Mark
markjhicks 1 year ago
@markjhicks I used the method of counting the number of times the check engine light flashed and then looked it up on the error list i found on a Dodge Neon website. I dont know any other codes, sorry.
alwaysblank 1 year ago
@alwaysblank To get the correct code you must have it retrieved with some type of scan tool or code puller that connects to the diagnostic connector. If you have an AutoZone near you they will retrieve the code with a code puller for free. I suggest going there and write the code down and let me know what it is before you replace any parts.
Mark
markjhicks 1 year ago
replacing a functioning sensor as preventative measure ??? the code doesn't mean the sensor has failed, it could be a spread terminal, broken wire, failed circuit in the PCM. Why guess, why not diagnose. Could you guarentee that a newly fitted sensor wouldnt potentially fail the next day ?
markymark9172 1 year ago
@markymark9172 We replaced the original sensor on a used vehicle before the vehicle was sold to help prevent problems during the warranty period. You are correct a P0340 does not mean the cam sensor has failed. There is no time in the video do we express this. We said when the sensor does fail the symptoms could include.Yes we do guarantee the sensor will not fail. If it does fail due to manufacture fault we will replace the sensor and also pay labor time and towing fees. Mark Hicks
markjhicks 1 year ago
@markjhicks ......covering costs, is not ever the same as guarenteeing a sensor wont fail. You are just guarenteeing if it fails in a waranty period it wont cost the customer anything apart from the time lost to get the vehicle recovered when it could be during a vital journey, getting the part fitted and either having to go pick up the vehicle or wait for it to be delivered back. My point is you are not guarenteeing the sensor wont fail, no one can do that.
markymark9172 1 year ago
@markymark9172 You are right no one can guarantee anything in life. No one knows what will happen. But if I was a betting man, my money would go on the new sensor to last longer. The original one has been on the vehicle for more than 100 thousand miles. This cam sensor is unique in that it is also the thrust plate for the cam shaft. Which means every time the engine is accelerated the shaft would at least rub against the sensor and many times hit it, hence deteriorating the integrity.
Mark
markjhicks 1 year ago
The fabric thing I am referring to is the thing you call a "Battery temperature sensor" at 1:24 , mine is white and totally corroded with holes in it...
ryandward 2 years ago
Thanks bud! - Ryan
ryandward 2 years ago
Hey Ryan this is what the catalog Dept. had to say:
SU3187 is the only battery temp sensor that we show. Im not sure what he means by the giant fabric holder but our sensor appears to be by itself with nothing attached to it.
markjhicks 2 years ago
Awesome, 2004 Dodge Neon SXT. 2.0L
ryandward 2 years ago
Done I will let you know Monday what they say.
Mark
markjhicks 2 years ago
My battery temperature sensor harness is totally corroded. I had to cut the sensor out and tape it with electrical tape to the battery for the battery light to stop coming on. Where can I get a battery temperature sensor that attaches to the battery without the giant fabric holder?
ryandward 2 years ago
If you can tell me the year, make, model and engine size, I will pass the information along to our catalog department and see what they have to say.
Mark
markjhicks 2 years ago
Why must the engine be cool before replacing the cam sensor. Is this true for all or most chryslers? Or is this true for all cars with cam sensors?q
nobleheight 2 years ago
In this cause it was because the sensor is located on the cylinder head. If the engine were hot you would burn your fingers...no other reason. Just to make it comfortable to work on.
Mark
markjhicks 2 years ago
better than expert village....
50N1C800M 2 years ago
Thank you for the kind words...if there is a video you would like to see or information you need, please let me know.
Mark Hicks
markjhicks 2 years ago
hey mark, well, i own the famous for stalling "dodge avenger 99 2.5 v6......now,, it hasnt failed on me just yet, but it has stalled 2 times at red lights. it could be something else.....
what i would like to know is, changing the crankshaft sensor is just a remove and replace correct?
also, the cam pos sensor is built into the distributor correct? is that also a remove and replace? i have to make sure the rotor button is facing the same direction as the old one right?
chris
50N1C800M 2 years ago
Chris,
It would be best to test the crank and cam sensors first...but you will need a lab scope to do that. However, the most common causes for your vehicle stalling is the crank sensor and distributor. When replacing the crank sensor, push down until the paper on the bottom makes contact with the trigger wheel, then tighten it down. To replace the cam sensor the distributor needs to be replaced. Mark the position of the rotor. I belive it has a dog eared gear and it can only go in two ways.
markjhicks 2 years ago
You are overlooking something that is very simple that can cause a stall when returning to idle at a light or such. The Idle Air Controll Valve/Motor can cause this as I have seen customers spend hundres on parts just to find it was this small inexspensive part that can be replaced in five min. Also I have seen the battery cause this type of concern. The battery acts as an electical spike damener and there is a votage spike when returning to idle that could cause this if there is a dead cell.
lovemym16 2 years ago
They are both about .5 hour jobs. Let me know if that does not take care of the problem...yes there are other possible causes.
Mark Hicks
markjhicks 2 years ago
@50N1C800M Definitely better than expert village. It seems to me that anybody off the street can get on expert village. There was one video I saw on expert village where the kid, claiming to be ASE certified and speaking in an authoritative tone, was showing people how to tell whether or not a battery needs to be replaced. He did it wrong. The proper way involves putting a load on the battery. At no point did he do this. The test he did do was for "state of charge" and even that he did wrong.
nobleheight 2 years ago
@50N1C800M The test for "state of charge" tells you whether you need to charge the battery. But you first need to remove the surface charge. The kid in the video did not do this.
nobleheight 2 years ago