Murraycroexp
Veteran Expediter
Before I spent money for a diagnosis, I thought I'd consult the professionals.....You guys.
I have a non-critical and occasional running problem I wanted to see if anyone had experienced.
2006 Express 2500 4.8L w/ 340K...
Cold starts great. Drives fine for hundreds if miles. I stop for fuel, or any reason, for 5-10 minutes. Restarts fine but has a DEAD MISS for about 1-3 minutes after restart. The miss kills about 75% of the power under acceleration. After the 1-3 minute period of the dead miss it immediately clears. And not gradually. It's like you had cylinders "turned off" and just flipped a switch to turn them back on.
I replaced the canister purge valve (by fuel tank) as it was pulling a huge vacuum leak when scanned for codes. I had heard this valve was notorious for getting stuck open with dirt. My idle has recently begun to degrade occasionally, from very slight to horrible at times.
Any clues? I hate to shut it down as my favorite, and trusted, shop seems to take 2+ days for anything.
I have a non-critical and occasional running problem I wanted to see if anyone had experienced.
2006 Express 2500 4.8L w/ 340K...
Cold starts great. Drives fine for hundreds if miles. I stop for fuel, or any reason, for 5-10 minutes. Restarts fine but has a DEAD MISS for about 1-3 minutes after restart. The miss kills about 75% of the power under acceleration. After the 1-3 minute period of the dead miss it immediately clears. And not gradually. It's like you had cylinders "turned off" and just flipped a switch to turn them back on.
I replaced the canister purge valve (by fuel tank) as it was pulling a huge vacuum leak when scanned for codes. I had heard this valve was notorious for getting stuck open with dirt. My idle has recently begun to degrade occasionally, from very slight to horrible at times.
Any clues? I hate to shut it down as my favorite, and trusted, shop seems to take 2+ days for anything.