1990 Pontiac Sunbird Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1990 Pontiac Sunbird
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1990 Pontiac Sunbird ProblemsCar Won't Start Due to Ignition Coil/Crankshaft Position Sensor Failure
The ignition module or crankshaft position sensor may fail causing the engine to die and not restart. Diagnoses will be necessary to determine if the module or crank sensor is causing the no start condition.
It is very common for the high pressure power steering rubber hoses to leak. Our technicians recommend replacing leaky rubber hoses to prevent the loss of power steering.
It is not uncommon for the power steering rack to develop a fluid leak requiring replacement of the rack assembly. Loss of power steering fluid may also cause an abnormal noise and damage to the power steering pump.
1990 Pontiac Sunbird QuestionsEGR receiving vacuum at low rpm's and on acceleration (2 answers)
did the egr test (snapped throttle and check if valve is open on deceleration)-chiltons) my EGR is open on acceleration and closes on deceleration? this is causing my car to idle rough and run rough under 2Krpm (anything below heavy acceleration)
1990 pontiac sunbird 2.0 Naturally aspirated, 2 door convertible, carbureted, automatic, 206K.
(PROM, ECM work no check engine code). Runs and drives fine first 30 min highway and most days around town. After 30 min (good and warm) it runs quite rough and won't hold an idle (or anything belo...
car will not stay running