Last post on Jan 23, 2010 at 8:59 AM
You are in the Saturn S-Series
What is this discussion about?
Saturn S-Series, Engine, Sedan
#78 of 81 Re: 2000 Saturn SL2 hard to start [mingleefu]
Jan 18, 2010 (10:02 pm)
You have the same problem. I'd bet on it. Your other details are symptoms of the same. Good news is the job is not hard. If you are closeby, say in MA? You could slow down fluid loss by keeping the coolant reserve bottle loose for now. There is really no real need to pressurized the coolant system if you do not pull trailer and your coolant temperature never goes above 200 deg! Hoses will last longer, and you will slow down fluid loss due to pressurization and leak at the manifold gasket. The gasket has deterioriated on you. There is coolant because a hose to your passenger area heater is through the gasket and through the intake manifold due to shortage of real estate for hose connections to the engine head. The gasket GM gave us is a POS fiberglass gasket. Does not shrink and expand like the aluminum parts that pinch it down. The gasket just fails all over after a few years. A new FelPro gasket is the right stuff, and only $18. Expect 3 hours to do the job.
#79 of 81 Re: 2000 Saturn SL2 hard to start [mingleefu]
Jan 18, 2010 (10:13 pm)
Your Check Engine Soon light is your emissions light. It has been on for a while likely due to detected misfire. Saturn engine should be completely smooth idle when in neutral/park. It should not gitter. When it does, those are moments that you operated on 3 cylinders. You should hear a slight pop at tailpipe, which is the afterfire detonation that got muffled. The code should be the P0301 as that is cylinder 1 misfired, the most likely seriously deterioriated seal (passenger side). You should also see P0507, triggered by your PCM's failure to gain control of your idle speed. It is a simple fix. Do once for rest life of car. Do before excessive unburned gasses from misfires mess up your catalytic converter.
#80 of 81 Engine idle
Jan 23, 2010 (8:16 am)
I'm not very good at vehicle repair and no very little. I have a 2001 Saturn S-Series car. I noticed the last few weeks when (clutch) I put the vehicle in neutral it revs up between 2 to 3 RPM. Vehicle sounds very loud. When I go into first gear it works just fine, the RPM drops to about 1 or a little less. I get NO error on my dash and I have ALWAYS replaced my air filter. Any help would be greatly appreciated.
#81 of 81 Re: Engine idle [staadon]
Jan 23, 2010 (8:59 am)
Revving up to 2000 to 3000 RPM is way high. The Saturn's idle air control (IAC) may be suspicious, but I have my doubts. IAC opens during cold idle and opens a bit also during air conditioner operation to speed up the idle in varying amounts to stablize cold idle and handle A/C load. I have never seen it manage to get above 2,000 RPM even when my '02 SL1 operates the exhaust electric blower which I determined operates at cold start and the IAC is most wide open (about 1,700 RPM). SL's OBD-II is quite accurate and would have detected other issues that I could think of. An air leak like other threads here relate to common problem of intake air leak would cause unmistakable startup problems and lots of misfires that would easily trigger the P03XX code. As the IAC is not cheap to buy new one on hope that is problem, best to retrieve it and use carb cleaner to dissolve the mess and re-install.