Question about 2000 Saturn SL
I have a 2000 SL, 1.9 SOHC. 185K. The service engine light code came on, was an EVAP code and EGR code. We replaced the gas cap, and the EGR valve, PCV valve. All sparks are clean.
This issue is that when I start the car, the idle jumps to 3K, holds for about 10-15 seconds, then drops to the normal 600-1K (depending on AC on). When I drop it to Reverse or Drive the idle jumps up to 1300-2000. When I apply the gas all seems fine, but when I let go the car does not slow down. When braking, the car will try to keep acclerating. From a dead stop I have made 30mph in less than 1 mile. Without touching the gas pedal! I am a little concerned I might not be able to stop at some point.
My mechanic says it might,might be the vac lines or an O2 sensor but both will be expensive. Any other ideas that might not cost a full day of labour at the shop?
Clean the throttle plate . videos on youtube . Throttle sticking , check cable also . You could check this with voltage check at the throttle postion sensor signal wire to PCM . With the key on you should read 0.5 at idle
Posted on Mar 13, 2017
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Posted on Jan 02, 2017
Your 2002 Saturn car has an electrical recall .I think its the ignition modual.Owners should contact saturn @ 1-800-553-6000, Prompt 3
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Posted on Dec 16, 2008
SOURCE: EGR Valve, O2 Sensor
Absolutely a bad o2 sensor can cause problems with performance. If you replace one it is highly recommended to replace both or all four depending on your vehicle. If one o2 sensor is making your vehicle run rich you will burn more fuel and in return increase the amount of carbon or unburnt fuel if you will in your egr valve you could probably get away with cleaning it but I would recommend replacing it, it will save you from having to pull it off again. Check your catyletic converter because long exposure to carbon will mess it up.
Posted on Jun 06, 2009
leaking o-rings at the fuel injectors would explain the hard starting when warm-when you hold the petal to the floor, it shuts off the injectors, which will make it possible to start it after the injectors leak down on shutdown. O-rings are easy to replace, just disconnect the battery and pull the injectors straight up to remove, get the old rings out and install the new ones, light lubricate the base of the injectors and pop them back in.
that might explain the high idle too, although usually the idle is not consistent when the injectors are leaking at idle-idle is rough. I would make sure the engine coolant temperature sensor is new (they are very important on saturn, the original one is plastic and they are known to crack easily-the replacement should be brass)-also, check the Idle air controller, best to remove the throttle body (4 bolts) and remove the IAC and clean it thoroughly, being careful not to get the top half wet-sensitive electronics. Clean the post that the IAC goes into, and clean the throttle body (both sides) while you have it out.
Posted on Feb 22, 2011
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