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1991 Chevrolet P Chassis 7.4L Poor Idle Quality, Hesitation, Stall, Misfire, MIL Lamp on
Posted to GM Driveability on 5/5/2009 6 Replies

OK guys this is a simple one but I am missing something here. Motorhome has a chev 454 TBI engine. When it is cold it starts well but as it warms up it starts misfiring and will sometimes die. Then it will not hardly start. If you are driving it while it is wa...

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Message Closed w/FIX

car Vehicle Data

1991 Chevrolet P Chassis

VIN 1GBKP37NXN
Engine7.4 L / 8 cyl
DeliveryFI / tbi
EmissionsOBD1
SymptomsPoor Idle Quality, Hesitation, Stall, Misfire, MIL Lamp On
OccursWhile Warming Up
Misc.Southwind Motorhome

Trouble Codes

42electronic spark control
Message Closed w/FIX

car Vehicle Data

1991 Chevrolet P Chassis

VIN 1GBKP37NXN
Engine7.4 L / 8 cyl
DeliveryFI / tbi
EmissionsOBD1
SymptomsPoor Idle Quality, Hesitation, Stall, Misfire, MIL Lamp On
OccursWhile Warming Up
Misc.Southwind Motorhome

Trouble Codes

42electronic spark control