1990 Dodge Dynasty Problems
RepairPal has identified the most common problems with the 1990 Dodge Dynasty based on complaints from actual vehicle owners. We'll tell you what the problem is and what it'll take to fix it.
Low fuel pressure may be caused by a faulty fuel pump check valve.
Hard starting or rough idle after the vehicle is parked for a period of time may be caused by leaking fuel injectors.
Abnormal fuel pump noise may be noted.There is a revised fuel pump, wiring harness, fuel tank insulators, fuel tank straps, and fuel tank available depending on the vehicle.
Corrosion on the coolant temperature sensor wiring may cause a hard or no start condition in cold ambient temperatures.
The AC/heater (HVAC) system may unexpectedly switch to the defrost mode when accelerating. This system is operated by engine vacuum and should be inspected for any vacuum leaks if this problem develops. There is also a revised vacuum check valve available to address this concern.
Timing belt replacement should be done at 60K intervals or sooner in very hot climates. The timing belt tensioner pulley should be replaced any time the timing belt is replaced.