Engine stumbles right after shift
Thread Starter
Racer
Joined: Sep 2005
Posts: 353
Likes: 6
From: Hamilton Ohio
Engine stumbles right after shift
89 Vette with an automatic trans. When I'm hard on the accelerator and it shifts from low to second gear the engine seems to stumble for 1 maybe 2 seconds then it seems to run strong again. This isn't a complete "fall on your face stumble" but I can feel the engine not pull as strong as it was just before the shift.
All electrical parts in the engine are new after a rebuild about 100 miles ago. The AIR pump has been removed.
Any suggestions as to where I should look?
JD
All electrical parts in the engine are new after a rebuild about 100 miles ago. The AIR pump has been removed.
Any suggestions as to where I should look?
JD
Thread Starter
Racer
Joined: Sep 2005
Posts: 353
Likes: 6
From: Hamilton Ohio
I found the problem, I THINK ! I took it out today and ran it hard three times and it ran through the gears just like it's supposed to. When I pulled up to a stoplight I saw the Service Engine Soon light flash on, then off. Engine started running rough and then it stalled. Got it started, limped home and pulled the code - 33 Mass air flow - HIGH.
New sensor should fix it.
New sensor should fix it.
