1990 3.9 fuel injection???
#11
Update... I took it yesterday and had the fuel injectors cleaned. It ran perfectly all the way home, about 15miles, then last night when i attempted to leave for work at 11pm it was crap again. Now that it has warmed up and turned sunny outside it is running great again. I researched Map Sensors and it states that they work off of barometric pressure. Would that be why it seems to be weather related?
#13
So I looked up directions to check map sensor. I pulled it off and just checked voltages like it said. Everything seemed within spec or pretty close so I put it back together. It runs perfect again, must have been connection or bad seal on vacuum line. Thanks for the suggestions and all the help.
#14
So ok... It's the same problem all over again. I replaced the MAP sensor since thats where I stopped the last time and it made no difference. How would I know if I have a bad fuel injector? I notice the one on the passenger side seems to quit spraying fuel at times and obviously thats when it starts dying. Can they be checked?