close loop stumble
Thread Starter
Heel & Toe
Joined: Apr 2010
Posts: 18
Likes: 0
From: Moorhead Minnesota
close loop stumble
1991 383 44lb trickflow injectors. had tune. before and after tune car would misfire after cloosed loop and then bog down at wide open throttle for a couple of seconds then come out of it. tried injectors timing, valve adjust, car made 340rwhp and 410rwtq with slipping over priced ram c4 conversion clutch
Le Mans Master
Joined: Aug 2007
Posts: 8,735
Likes: 414
From: WV
You need to hook it up to a scanner, this should help point you in the right direction..If its doing it in closed loop only then it may involve one of your sensors since most of these don't come onto play until the car reaches closed loop.. My first guess would be an 02 sensor but it could be as simple as a coil , or Ignition control module malfuntioning after it warms up, but a scan may tell you where to look.....WW
Last edited by WW7; May 1, 2011 at 07:28 AM.
Thread Starter
Heel & Toe
Joined: Apr 2010
Posts: 18
Likes: 0
From: Moorhead Minnesota
close loop stumble
You need to hook it up to a scanner, this should help point you in the right direction..If its doing it in closed loop only then it may involve one of your sensors since most of these don't come onto play until the car reaches closed loop.. My first guess would be an 02 sensor but it could be as simple as a coil , or Ignition control module malfuntioning after it warms up, but a scan may tell you where to look.....WW
Safety Car
Joined: Apr 2011
Posts: 3,660
Likes: 22
Go pull some plugs and see what they can tell you. if its been lean, or rich you'll see it on the insulator.
Melting Slicks
Joined: Jun 1999
Posts: 2,949
Likes: 23
From: Bowling Green KY
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1991 383 44lb trickflow injectors. had tune. before and after tune car would misfire after cloosed loop and then bog down at wide open throttle for a couple of seconds then come out of it. tried injectors timing, valve adjust, car made 340rwhp and 410rwtq with slipping over priced ram c4 conversion clutch
Thread Starter
Heel & Toe
Joined: Apr 2010
Posts: 18
Likes: 0
From: Moorhead Minnesota
forgot to tell the whole story 383 comp heads cam 556-566 lift 344 354 duration 44 injectors holly stealth ram bbk 58mm throttle all roller. 12.1 keith black pistons with long stroke stroker kit.
