Question about 1994 Saturn Sl

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When start high idle put foot on break to put in gear then stalls

The idle is high then goes down in a few but as soon as i put it in gear to go it stalls could it be o2 sensor?

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  • 458 Answers

Doubt it's the O2 sensor.More likely an issue with your IAC(Idle Air Control) motor.Quite often they get plugged up with carbon and stick in position.

Posted on Jul 28, 2013

Testimonial: "that would cause it to have a high idle at start up ? its just fustrating cause i put my foot on the break and it stalls"

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SOURCE: engine stalls when restarted idles up and down and stalls

I went through this scenario while working in a toyota sienna a few months ago and it ended up being the battery. When battery supply voltage starts to drop the PCM will limit voltage to certain areas.

Posted on Jan 19, 2009

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SOURCE: Car stalls when you let off the gas when warm or idling

Don't let off the gas!

Posted on May 02, 2009

  • 1 Answer

SOURCE: I have a 2001 Saturn Sc with the 1.9L. It has a

My 2001 Saturn SC2 would randomly rev itself, i did a diagnostic test at auto zone and found the temp. sensor was going out fixed the problem. Ya its fun when your car keeps going when you let off the gas O_o. Hope this helps!

Posted on May 26, 2009

Suraido
  • 195 Answers

SOURCE: rpm 2500 to 3000 when you start then goes down 1500

In 99% of the cases of GMs doing that it's the Idle Air Control motor, which you already changed. But changing it does not always fix the problem. First, if you bought the new IAC motor second hand, change it again cause last time i had to change mine 3 times before i got one that worked OK. Second, if it was bought new and/or your are 100% sure the IAC is working fine, then you probably just have to much carbon deposits where the motor's tip and the intake manifold meet and are supposed to seal up, preventing it from closing normally and giving the engine too much air, cause the high RPM idle. So take the IAC out again, clean the opening, lip and everything you can see and get into around that area, with a cue-tip and some contact cleaner, or lighter fluid or rubbing alcohol to get all the carbon deposits out and you should be ok. If not, then the problem probably resides in the car's onboard computer.

Posted on Jul 07, 2009

dncholas
  • 222 Answers

SOURCE: 96 Saturn SC1 (automatic): b

If it ran beautiful I don't see why you installed CPS. ??? 

The CPS and CAS should only be replaced if the car is stalling or shorting out. I just changed the CAS on my 95 Talon but only because it was cutting off like I turned the key off. 

If the only thing you did was change the CPS then it's not lined up right. Every car is different but the CPS usually has to be aligned.

Posted on Aug 21, 2010

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Does it feel like if you had a manual transmission and you let out the clutch with your foot on the brake?

if you are in a place you can do this safely without hitting anything try starting it while the transmission is in neutral. After it starts put it into either drive or reverse with your foot off the brake. Does it start to move, then the rpms start to drop fast and then stall?

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