missing under load, backfires, popping
#11
11 Second Hall Moniter
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Just thinking out loud here. I've had brand new spark plug wires out of the box that did not have good spark plug retention. Even though it clicked onto the spark plug tip all the way, if I wiggled the wire, I could feel that it was actually loose on the tip of the plug. It's happened to me more than a few times. Now I check every time to make sure it clicks and is actually tight on the plug. Chasing your tail sucks bigtime when you fix one problem and unknowingly create a new problem.
#12
PT's Slowest Truck
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Since it's an intermittent problem, I'm leaning more toward an electrical issue than a mechanical one, even though there are no codes...possible intermittent open circuit or open ground? How about throttle body/TAC module, anything that you can monitor with scanning software...while the problem is happening?
#14
Notorious BIG
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Not necessarily...if the MAF readings are within spec it may still be bad and not throw a code. Easy enough to swap in another MAF (if you have access to one), or disable the MAF with tuning software and run speed density...
Since it's an intermittent problem, I'm leaning more toward an electrical issue than a mechanical one, even though there are no codes...possible intermittent open circuit or open ground? How about throttle body/TAC module, anything that you can monitor with scanning software...while the problem is happening?
Since it's an intermittent problem, I'm leaning more toward an electrical issue than a mechanical one, even though there are no codes...possible intermittent open circuit or open ground? How about throttle body/TAC module, anything that you can monitor with scanning software...while the problem is happening?
#18
Notorious BIG
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No EGR on my '03
Last edited by Holty; 04-22-2011 at 01:25 PM.