Saturn Idle Problem

Saturn SC2 Idle problem that fixes itself

Category:

Autos & Vehicles

Tags:

• Saturn
• Idle
• Engine

[daveshvideo]

So far zxcv43210727 (above) wins the prize. This spring I disconnected the battery over night and it just runs great, an here it is almost june and still running great.

Now the next problem, My son just graduated high school. I haven't even seen my saturn is 2 weeks. I am still driving the truck.

I suppose when he gets a card I'll get mine back. Hopefully before Obama takes the gas to $6.00/ gallon.

Thanks everybody, I'll be around.

David

[youdhp]

I have the exact same problem on a 2000 SL sohc, manual trans. I have replaced everything you have replaced with no luck. I have the ELM computer link and there are no codes. Please let me know if you ever find the problem. I will do the same.

[daveshvideo]

My humorous response is that I solved the problem by the car running out of inspection, so it is sitting under some snow while I drive the truck. First thaw and I'll get back at it.

I'll keep you informed. I still need to look for the "vent valve" mentioned above

Thanks

[gageoninja]

i would say that an Egr problem exsists with sticky carbonized pintle valves. val guides and seals are usually the culprit and help with the burning of the oil ergo Carbon. check the vent valve on your valve cover and boom. neet

[daveshvideo]

Thanks all for the input. I have replaced the EGR vlv, it was crappy, That helped for a bit. Now with winter here it is idling high again and isn't fixing itself.

I'd like to know more about the vent valve thing. Where is that?

If I was over pressurizing the valve cover in some way that may be a problem

David

[daveshvideo]

More...

Eureka! Replaced that and it was fine........For a few days then back at it again.. WTF.

I figured, well, it might be the EGR valve not closing all the way...Replaced that, no change.

Today it was being bad, actually idled at 3K (even when stopped!) for about a minute.

Then.....Shazaamm it runs perfect.

Left to change? MAP and O2.

Or I might turn it into a little black Honda or something.

Thanks

[mnkstr]

Check ur PVC valve for leeks mine did that and there was a crack leaking air in the hose.

[toiletpaperninja209]

Try fuses or sensors it doesnt seem like a big problem

[highlifein909]

@daveshvideo after you disconnected the battery it worked fine???

[osvst]

1. Clean the throttle plate and intake manifold with Cleens u get it at ur GM dealer. 2. Get ur IAC, MAP and TPS checked make sure there in there operating ranges.

3. See if ur intake is cracked and listen for vacuum leaks.

[xOConnorGkx]

I have a 2002 sc2 and mine does the same thing, my cars automatic and when I turn it on and let it sit for a while at 950 rpm than shoot up to 2500 and stay there and if I put it in drive during this my car reaches 20 mph without me touching anything

[mitsubishi433]

is it the idle control valve ??

[lilbiGpena]

my 93 saturn wont start inles i use starting fluid and it only idels with my foot on the gas i changed the idle sensor and the idel position sensor still wont idle do you have an idea?

[eclipser2004]

EGR valve cleaning or a new engine coolant temp sensor maybe. After that pull the PCM-B fuse out for 30 seconds or so, or disconnect the negative terminal from the battery for 30 seconds. Might also check for a leak around the intake manifold by spraying around the manifold with some carb cleaner while at idle.

[eclipser2004]

EGR valve cleaning or a new engine coolant temp sensor maybe. After that pull the PCM-B fuse out for 30 seconds or so, or disconnect the negative terminal from the battery for 30 seconds.

[dbrinkley5]

Jus for reference, the line going to the coolant "expansion" tank is a coolant return line. Coolant runs through the intake manifold after the heater core and keeps the manifold/tb warm so it don't build up condensation inside and so it don't freeze over inside during colder temps season