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(1990 Chevrolet Corsica)
in Seymour, TN on June 25, 2017
Car won't stay running and then only idle touch throttle it dies. Have replaced fuel pump filter took off converter replaced crank sensor computer, map , throttle ,and mad sensors help help help
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on June 25, 2017
Stop replacing parts, please, and have a test done. How much did you spend on all that? If you make a relationship with a local repair shop you'll find an excellent technician that will be able to carry out a diagnosis that will result in the source of your problem. I would guess that most of what you replaced was unnecessary.
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on June 26, 2017
Yes it was but what you to do? I now can keep the car running by using starting fluid sprayed into throttle body. Something is preventing my fuel pump from working other than the relay been there done that . could it be key switch or maybe oil sensor? And if I had the money fo mechanic I would not be working on it thanks. Couple of hundred for sure
on June 26, 2017
Hello, the point I was trying to make is that it sounds like guesses have already cost a bunch of money. Just trying to be helpful, which is easier from where I sit. The thing I would point out here in theoretical discussion is that if your vehicle runs with the starting fluid, then one of two things is occurring that keeps your vehicle from running without that starting fluid.

1) You have insufficient fuel delivery to the engine
2) You have too much air delivery to the engine

Now it's time to figure out which one. A fuel pressure test is the only way to check to see how much fuel you are getting at the engine. A gauge will need to be hooked up to the fuel rail to test.

For the air, you need to check and ensure all pathways of air getting into the intake manifold must be metered -- meaning, limited when the engine is cold especially. If the intake manifold is getting a ton of un-metered air getting inside of it, then you'll never keep it running unless you spray that starting fluid down there to offset it. This means you could have a sticking idle control valve in the open position or maybe a vacuum leak at the engine allowing air in.

Your guess that the fuel pump isn't working may not be accurate. But if it is -- have you checked the fuel pump relay? The relay for the engine's processor?
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