1991 Pontiac Sunbird Problems
RepairPal has identified the most common problems with the 1991 Pontiac Sunbird based on complaints from actual vehicle owners. We'll tell you what the problem is and what it'll take to fix it.
The PCV vacuum hose under the upper intake plenum may become brittle and crack causing an engine vacuum leak.
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.
The engine temperature sensor wire for the engine temperature gauge, or warning light, may touch the rear exhaust manifold causing a short to ground causing erratic operation of the temperature gauge or warning light.
A coolant leak may develop from the water pump. The engine may overheat as a result of the coolant loss. A leaking water pump should be replaced.
A door window may move slowly or stop in mid travel due to a failing power window motor. The affected window may start working again after the motor cools off. Replacing the faulty window motor will commonly correct this concern.
The rubber section of an automatic transmission cooler line may develop a fluid leak . In some cases the leaking section of hose can be replaced. In others, the complete cooler line must be replaced to correct this concern.
One or more of the fuel injectors may short out electrically causing a rough idle condition.