Well, after replacing the spark plugs, wires, cap and rotor, I found the 10 amp fuse just off the alternator was blown. Replaced it. It started up and ran like a dream for about 15 minutes. I changed the oil. I took it around the block and it idled and ran just awesome. Then sitting there it died. It is back to running the same way as it was before. It starts hard, then runs really poorly, blowing black soot all over. It made some popping noises out of the tailpipe a couple times and then sometimes it will rev up and just stay there. I have to shut it off to make it stop. This all started when I got it back from the tranny shop. I have removed the battery cables. No difference. I can't find any reason why it's doing this. I've spent all day looking behind the motor and all over for a reason. Any Ideas??? Please...
Truck running horrible
- Thread starter mncarguy
- Start date
MikeMcNair
New member
Re: Truck running horrible
sounds like a spark issue (with all the raw fuel/crap out the back) possible.
make sure your plug wires are on TIGHT.
are the plugs on the right spots on the cap? (correct firing order)
gap the plugs to ~ .028
make sure your O2 sensor is functional (via datamaster, or http://www.syty.org/old/d&e.html#chk )
make sure the ECM Fuse "ECMB" is in (10 amp, bottom left of fuse block)
make sure your dizzy cap is on snug, and all associated plugs.
also, make sure your coolant temp sensor is active, if not, the car may be spraying too much fuel.
that should be a start, from there, keep us posted.
sounds like a spark issue (with all the raw fuel/crap out the back) possible.
make sure your plug wires are on TIGHT.
are the plugs on the right spots on the cap? (correct firing order)
gap the plugs to ~ .028
make sure your O2 sensor is functional (via datamaster, or http://www.syty.org/old/d&e.html#chk )
make sure the ECM Fuse "ECMB" is in (10 amp, bottom left of fuse block)
make sure your dizzy cap is on snug, and all associated plugs.
also, make sure your coolant temp sensor is active, if not, the car may be spraying too much fuel.
that should be a start, from there, keep us posted.