Truck won't start
#12
#13
OK, I started diagnostics today. Fuel pressure is good. I checked the resistance on all of the injectors and they were fine. I checked the fuel and ASC relays and they were fine.
While checking all of the spark plugs for spark the engine started while I had the #6 wire off. When I replaced it, it wouldn't start the first time, but will start now. When I get to about 3000 RPM it runs real rough, like it is missing a few cylinders. I don't believe it can be the dist cap or rotor, as they are new and I was having problems before replacing them. Where should I go next?
Thanks,
Ken
Oh, I checked the resistance on the coil and it was good.
While checking all of the spark plugs for spark the engine started while I had the #6 wire off. When I replaced it, it wouldn't start the first time, but will start now. When I get to about 3000 RPM it runs real rough, like it is missing a few cylinders. I don't believe it can be the dist cap or rotor, as they are new and I was having problems before replacing them. Where should I go next?
Thanks,
Ken
Oh, I checked the resistance on the coil and it was good.
Last edited by BoneEOD; 06-04-2010 at 05:57 PM.
#14
#17
Entirely possible. Incorrect airflow readings will give you too much/not enough fuel to burn. Check the map sensor (on the front of the throttle body), make sure it is plugged in good, is seated well in its spot......
#18
#19
Yes, not sure how removing the one spark plug wire and watching it for spark could get the engine to start!
I removed the pre-cat and all the sputtering stopped and it will now go past 3000 RPM. I wish I could have seen this before when I tried it, but that is the way it goes.
I guess I will drill out the cat, need to find directions on here. I could have bought a new cat with all of the money I wasted not doing proper diagnostics and don't have enough money now to do so. Arrgg!
I removed the pre-cat and all the sputtering stopped and it will now go past 3000 RPM. I wish I could have seen this before when I tried it, but that is the way it goes.
I guess I will drill out the cat, need to find directions on here. I could have bought a new cat with all of the money I wasted not doing proper diagnostics and don't have enough money now to do so. Arrgg!