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I have a 2000 Saturn sl2 and it won't start...it is getting fuel and spark and the only code it is throwing is for the throttle position sensor...the last time it ran it started and ran for a second and then died and has not started since... Any ideas?
Re: I have a 2000 Saturn sl2 and it won't start...it is...
Absolutely if the TPS throttle position is out how can your EFI computer communicate with it if it is malfunctioning!!! Replace the throttle position switch and drive on
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Have the codes read, even if there is no light on. This can be from one end of fuel/air problems to the other. Too much fuel, not enough air. Too much air, not enough fuel. First thing would be to clean the throttle body. The plate and where it sets inside of it. Brake clean and a tooth brush.
Have you checked the fuel injectors? Fuel filter? Fuel pump? Sounds to me like you have a fuel delivery problem.
Try the following: remove the airbox and spray some starter fluid into the throttle body while someone else cranks the motor. If it starts for a second and dies, then you KNOW you have a fuel delivery problem. If it doesn't change and still won't start, then the problem is either a bad sensor somewhere (crank position sensor, maybe?) or no compression.
Change the gas (and the oil, with Synthetic). The gas loses it's volatility after just a few months and starts to go bad. Siphon all the gas out and put in a fresh tank. Let us know if that helps.
you need to find out what code is in the computer,it may be the throttle position sensor that has gone bad and needs to be pushed to tell the computer that it needs fuel(may not be a signal sent back to the ecm)in the rest position.but the code will tell you were to start the diagnoses.also the throttle plate may need cleaning as they get dirty and need cleaning from time to time.
Look where the throttle cable hooks up to the throttle on the throttle body,it is no the opposite side,it moves with the throttle,if this was helpful,please rate,thank you.
sounds like the fuel regulator might be bad. it can cause too much fuel at start up. thats why it will start at wide open throttle. more air for the fuel mixture
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