LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

383 cutting out after gets hot.

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Old Apr 21, 2008 | 12:38 PM
  #1  
kline454's Avatar
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383 cutting out after gets hot.

Well my car keeps cutting out after it gets hot i have replaced the plugs wires,injectors,opti, it acts like its loading up on fuel,just starts missing and poping out the exhaust last night it even died. does this sound like a ICM??
Old Apr 21, 2008 | 01:00 PM
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From: Oklahoma where trees are made of wood.
I would get a scanner and see if it all starts after the ECM enters closed loop operation, if it does it is more than likely a sensor reading or acting flakey.
Old Apr 21, 2008 | 01:58 PM
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yeah there are no codes and its only when you drive the car for 30min or more close doesnt matter in its close loop or not.
Old Apr 22, 2008 | 11:45 AM
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Originally Posted by kline454
yeah there are no codes and its only when you drive the car for 30min or more close doesnt matter in its close loop or not.
Since it doesn't matter about close or open loop for the miss to be present it could be several things really, are all the sparkplugs in tight, it could be the ign module getting hot. Also are all your grounds on the motor good?
Old Apr 22, 2008 | 01:33 PM
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yes plugs are all tight and have been replaced 2 times now and the problems still there also all ground are clean and tight, i replaced the ICM and seem to be running ok for now.
Old Apr 22, 2008 | 01:44 PM
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What do you mean "cutting out"? A slight stumble, shutting off completely, a hard miss. Since you installed a new ICM you might try the spacer mod and get it off the head so it doesn't heat soak.
Old Apr 22, 2008 | 03:44 PM
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Originally Posted by ulakovic22
What do you mean "cutting out"? A slight stumble, shutting off completely, a hard miss. Since you installed a new ICM you might try the spacer mod and get it off the head so it doesn't heat soak.
hard miss and or small stumble.
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