Dodge or Jeep 3.7, 4.7 Engine Noise from Rocker Arms Falling

http://www.denlorstools.com/autoblog/2010/04/misfire-3-7-4-7-dodge-or-jeep-fa... Dodge or Jeep 3.7, 4.7 Engine Noise and misfire from fallen rocker arms. Video has footage with audio of the engine noise. The link goes to DenLors auto repair blog with more information on fallen rocker arms. Tools are also linked at the bottom of the tech article for servicing.

Category:

Autos & Vehicles

Tags:

• Dodge
• Jeep
• 3.7
• 4.7
• Engine Noise
• Rocker Arms
• Falling
• Fallen
• misfire

[DenLorsTools]

I know what you mean. I've owned 5.2's (318 CID) and 5.8's (360 CID) and they were great engines. The 4.7 (Mercedes) I have in my Dakota has been great so far but I only have 53,000 miles on it. I plan to keep the oil changed often and watch the the temp gauge closely. My neighbor had well over 100,000 miles on his Dakota with no issues. Good Luck.

[RiceEater01]

had a 4.7 v8 in my dakota, WORST MISTAKE EVER. Majr overheating problems i guess there known for warping and cracking heads allot. And heard they have bad oil problems, should of never got rid of the 5.2 one of the best motors ever

[DenLorsTools]

I've had 5.2's (318 CID) and 5.8's (360 CID) they're great. The 4.7 (Mercedes) I've got has been great-only 53K.

[superhawkn]

does this affect all new jeep wranglers and dakotas 2011 back?

[DenLorsTools]

@superhawkn Not sure if the newer model years have this problem. Best bet is to treat all 3.7 and 4.7 engines as if they are affected. Keep the oil changed often and level FULL. Also doing a fuel induction/injector cleaner is advisable.

[DenLorsTools]

More information in the repair article - click on the link in the video description. DenLors Auto Repair blog has more info on tools and tips for making car repairs easier. Auto tools are for sale at our main website, DenLors Tools.com

[v7nf]

Ive got a durango 4.7 has 230,000 miles on it,never gave me a problem,untill recently,Ive decided to rebiuld it myself,keep it,I hear alot of problems out of them but everybody I know who has one never had a problem,well trans maybe but that is always 98-99 models?so I dont know...

[BlackaCidic]

@DenLorsTools My dakota is going strong with 300,000 miles.

[Billwillwhipurass]

i have a 2004 Ram1500 that I bought brand new with the 3.7 and 35 inch tires at 156k now with nothing but reliability . My fiancee has an 06 Dakota 3.7 with 110k that shes had since 2008 thats had zero issues . I will never buy another brand truck as long as i live

[astrak1001]

I have a 99 Jeep with the 4.7 at 174,000 miles with no engine problems. It has recently developed a tick that increases with engine RPM, but goes away as the car heats up. It sounds more like the noise is coming from under the vehicle so I'm pretty sure it's not a rocker arm, maybe an exhaust manifold bolt that is loose. They are great engine's if taken care of.

[istuddd]

how much does this cost to repair im considering buying a 2003 jeep liberty 3.7 with 150k on it

[MrMountainVOL]

this just happened to my jeep

[m036094]

Mine sounded the same, and the guy I bought it from said he had over heated it. I figure heat causing thinning of the oil causing the lifter to collapse and the rocker popping off. Untorqued the cam lifted it up and put it back together, now it runs like a champ. I am going to be running 10w40, If it is good enough for my cummins it should work in the Jeep.