I have a 1992 APV with a 3.1 liter naturally aspirated TBI that was running great a few days ago but then after spending a full day on a job and going out to start a
cold engine,
nothing! It cranks but wouldn't start. I checked for spark and then for injector pulse and from what I can see it isn't getting either. I had to have it towed home.
Two days later it started without fixing anything. I drove it to McDonald's only to be stranded again and having to get it towed home again. It seems that if it starts it runs fine like nothing is wrong but once I turned it off it wouldn't start again.
When I first noticed it wasn't getting any spark I changed the ECM and the ignition coil but no change. Then I noticed that the injectors were not spraying any gas either so I changed the fuel pump because I had to change it once before about a year ago when it wouldn't start. so now I installed a new one with a new fuel strainer and fuel filter. Still nothing!
When I first turn the ignition on I can hear the pump kick on for a few seconds and then shut off, just like it is suppose to. I also notice it comes on for a few seconds each time I crank it over so the fuel pump relay and all seems to be functioning all right.
The service engine light comes on when I turn on the ignition but it stays on while it cranks. I can't remember if that was normal or not. I know the computer is on but not sure if it knows the engine is cranking over.
This year of engine does not have a crank sensor (it still has a maniacal distributor) and no fuel rail or fuel pressure regulator. (I don't think) I'm thinking on changing the distributor for a new Cardone one because I noticed the harness plugs crumbling apart when I changed the ECM and this would also have a new pick-up coil and capacitor included.
Any other ideas any one?
