Question about 1991 Oldsmobile Cutlass Supreme
You need to get the thermistor checked, this is what controls the cold idle up, when it is cold the computers is told to turn the idle up and give the engine more gas. If this sensor is faulty you can and will have cold start problems,its ok when its hot but when its cold....it will play up. Let me know if you need more information.
Posted on Nov 02, 2010
Your car is equipped with a computer controlled engine
management system. Try to visit any independent auto service
and could scan your computer for fault or error codes. The information should pinpoint the malfunctioning
If a major tune-up has not been done recently, this could be the cause of your problem. Replace the spark plugs, plug wires, fuel and air filters, etc. Also, replace the oxygen sensor. In addition, service the fuel injection system. Clean the carbon deposits from the throttle bore and idle passages.
Also, you should check to see if the throttle cable and throttle body are adjusted properly, check for vacuum leaks and verify the idle valve is working properly.
Keep us updated.
Posted on Nov 03, 2010
You may have a problem with the throttle positioning sensor. It could be a few other things. I would take the car to Autozone and have them put it on their diagnostic machine and tell you what the codes are. It could be the mass air flow sensor, the crank sensor, the cam sensor. Could be a lot of reasons. But the diagnostics is free and will get you headed in the right direction to get the problem resolved.
Posted on Nov 02, 2010
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Posted on Jan 02, 2017
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