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1993 olds cutlass supreme idles between 3500 and 400rpms
The car idles between 3500 and 4000rpms. We have no idea how to reset the idle if thats our problem. Our only car and desperately need it running right . Can you, please, help with this problem? Thanks!!
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A flat spot on acceleration could be low fuel pressure or a faulty throttle position sensor. Could also be a vac leak such as a faulty EGR valve.
Is the check engine light on ?
YOU SHOULD HAVE VACUUM AT IDLE TO MAP SENSOR.WIDE OPEN THROTTLE VACUUM WILL DROP. SO YOU NEED CHECK AND REPLACE ALL VACUUM LINES ON INTAKE MANIFOLD.THATS WHERE YOUR MAP SENSOR GETS IT VACUUM FROM.
You will need to change the crank position sensor first and see if it corrects the problem. It is located behind the engine near the firewall. It's a bit tricky to get to it, you would need to rotate the engine forward then look under the exhaust manifold and under the cylinder closest to the drivers side. Use a 10 mm deep socket to loosen bolt. After replacement and it is still stalling then you will need to replace the ECM (vehicle computer). If it turns out to be the computer, go to your local junkyard to get an inexpensive replacement Click on the link below to view the CPS, it is around $22
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