Hello , would U pls tell me how&where i monte a potentiometer on a 1990 cutlass sierra ecm for making injectors pulse shorter adjustable and how many must be its k ohm

SOURCE: 1991 oldsmobile cutlass supreme

Check for fuses/power/ground to the engine computer (or injector drive computer) whatever the case is.

Spark, fuel pump, and starter all are independant of the fuel injection computer.

Either the computer itself has gone bad, or it is not receiving power or ground, or wiring to the injectors might be bad...

SOURCE: The AMP light came on my 1990 Olds Cutlass. The

might need to replace battery or could be altenator

SOURCE: 1991 Oldsmobile Cutlass Supreme-there's no spark.

Check the wire from the module to the crank sensor. They go bad. Usually from oil leaks. Is it saturated with oil where it goes under the engine? Also check for power and ground on the two wire plug on the drivers side of the module. It isn't the ecm or anything with it. The ignition system on the 3.1 will work with the ecm unplugged. The ignition system is a stand alone system. It sends signals to the ecm for the fuel injection.

EdCarCal

• 1326 Answers
• Posted on Mar 09, 2017

SOURCE: 1990 cutlass ciera 3.3injectors are not pulsing injectors ohm out 11.8-12 40lb of fuel pressure wiring to injectors are hot at a loss can the M.A.F.cause a no start it does start with starting fluid

MAF is probably not the problem - sounds like the engine is not getting the fuel it needs to start and either your injectors are fouled or the pressure regulator is stuck - that might cause the hot wires. The fuel pressure seems a bit low, but it should momentarily drop when trying to start the engine.

Testimonial: "When it quit running I had hoped jumper cables hooked up every now and then it would crank and run like thirty seconds and and die like you turned the key off. Scanned the codes at advanced it pulled MAF and O2 sensors that was the reason ing for asking about it."