Question about 1993 Oldsmobile Cutlass Ciera
Replace the Maf sensor it is not detecting the atmospheric pressure and is over fueling the engine. Also check the EGR valve it may be stuck open this is a common issue and could cause the black smoke, Also once you fix it you need to do a top engine clean to clean out the carbon on the engine and then do a oil change, if you need help on doing the top engine lcean leave comment and I will give you directions on how to do this.
Posted on May 20, 2010
It didn't work, because the coolant temp sensor ,only puts the vehicles ECM into closed loop when warm,then the O2 Sensor takes over fuel control
You can not run a vehicle without a MAF Sensor.
I would take it to a shop, that can put a scanner on your vehicle and solve this in 10 minutes.
Posted on May 12, 2010
Testimonial: "As always, Any help/advise is appreciated. This is a great place to bounce ideas back and forth with people who know what they're talking about. Again....Thank you for your advise."
Sounds like the Coolant Temperature Sensor is telling the computer that the engine is still cold which in turn feeds it more gas. They are not expensive and should fix the problem
Posted on May 10, 2010
Testimonial: "This was a pretty good idea. It made perfect sense since the coolant temp sensor determines how much fuel the system needs because of being cold/hot. Also suggested from a second source. unfortunatly it didn't work though."
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Posted on Jan 02, 2017
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