Engine Performance problem
1999 Chevy Express V8 Two Wheel Drive Automatic 281000 miles
This van will crank up and run Ok sometimes, but when you put it in gear, it will rev up and down from idle to maybe 1000-1500 rpm own its own. If you try to drive forward and give it some throttle, it will stall out like getting too much gas. I think, but not sure that sometimes I smell gas like its getting rich on me or something. What do you guys think?
I went out and bought a fuel pressure gauge and tested the fuel pressure and it was Ok, steady at 52, but the engine was steadier than it had been. At the same time, I bought a ignition tuneup set, dist. Cap, rotor, etc, and went to put on the cap and rotor to find that the screw holes for the cap had been busted on one side and stripped out on the other, making the cap sit high on the busted out side. That was the problem. Thanks though, I figured it was something to do with the fuel too, but glad the problem is found.
May, 6, 2008 AT 11:07 AM
Very common for those to strip out. How did you fix it? Curious.
May, 7, 2008 AT 6:44 PM
Creatively of course. Piece of coat hanger bent across the top attached to each side to hold it down tight enough so I could drive it to Marta inspection to get tags. Need to get that going as soon as possible. I guess I'm gonna get a new distributor and put it in. Just flippin the van for a little money though. Thing runs great as long as the motor is firing right, but a pool company trashed it inside, enough clay and dirt to grow corn in all over the floors, dash, you name it. Good work van if it's cleaned up.
May, 8, 2008 AT 6:49 AM
I usually see wire ties holding them on.
August, 4, 2008 AT 1:48 PM
I thought it was the distributor cap but it looks like something else.
It will crank up and run great for a while and then it will go crazy, the speedometer goes nuts, the anti-lock brake light comes on, and it will run in lunges and then seems like it has died but if I take it out of drive into neutral it's still running and runs Ok, put it back into drive it lunges for a while and repeats the same deal. Seems like the gear shifting affects the problem. If you put it in 1st gear, it seems to still change gearsand will lunge so bad that the drive shaft sounds like it's coming apart. A mechanic locally put in a speed sensor in the transmission, ran Ok for a while and then started the same problem again.
There isn't an engine service light or code at all.
What could cause this?
August, 5, 2008 AT 8:55 PM
I would use my scan tool and drive vehicle while watching the vehicle speed sensor reading from the transmission to determine if its computer related or dash cluster problem. Check all grounds on engine block and battery cable connections at battery.