Is there an electroic component in a '89 Justy that could be dropping out after about a quarter of an hour of running time? . . . .Or such a component on the computer power supply, is there is such a thing? I hate to take freon and go looking for the beast. TIA...
Care to share with us any of the symptoms which have caused you to ask the question? Might possibly be a help to somebody and send you in a more logical direction.
~Brian
My shop had the Justy for 5 weeks and could not locate the component that was 'droppping out'. They replaced the distributor, coil and attached module, and a few other components. . . .The 'check engine' light is usually on, unless it is a very cold morning. The problem has been isolated to ignition. The code readings are 'fuel mixture solenoid'. I purchased another used one (top half of the carb) 3 years ago, and it made no difference. I had a foreign vehicle specialist work on it and he discovered both 'fuel mixture solenoids' were functioning properly and the 'empty bowl' sensors were also okay. Initially, the car starts with no problems. But after running about 12 minutes, it quits. If I park it before it quits, the 'latent' engine heat is enough to keep it from starting for about 15 minutes. If I try to start it after it has been parked, after a run, it takes about 15-20 minutes. It also seems the more I try to start it, unsuccessfully, it prolongs the 'wait' time before it starts. Usually when I get towed home, it starts about one block from my house. . . ..There is a transformer located in the engine compartment, on the right fender well, that I believe may be a power supply/stablizer for the computer...Car is 4 speed, and not injected. When it runs, it is a dream... when it stalls, it is a study in patience.. . .thanks.
********************* "strchild" wrote in message
Hmmm...I can only point you to
Carl
It
Probably no help but if I had an old Saab 900 doing something like this I'd be substituting the fuel pump relay; but being a Justy I don't even know if it has one! Cheers
My thoughts too
With the symptoms you described have you checked the fuel filter and the flow from fuel pump.
Good points. Um - after it warms up and fails, are you missing fuel or 'fire'?
Carl
Electric fuel pump, and filter (located underside of car under drivers seat), are not the problem...it is strickly ignition electronics. Not vapor locking either.
*******************************************Engine ground? ECM grounds? Are the supply voltages present when it cuts off? Cold solder in the power semis inside the ECM? Have you unplugged and plugged the ECM connectors? Any rust in electronic components connectors? Any chaffed wires?
Good luck!
theChas. wrote:
MotorsForum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.