× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
1993 Chevrolet K2500 5.7L Poor Idle Quality, Surge, LOW POWER
Posted to GM Driveability on 5/6/1999

I systematically unplugged Map,IAC,EST,O2 sensor only when the O2 was unplugged and fixed at .45 volts would the vehicle smooth out and run ok. O2 voltage afer initial warmup and after closed loop is fixed at 1.10 volts vehicle is not running rich I pulled...

 
Message Closed

car Vehicle Data

1993 Chevrolet K2500

VIN 1GCK24K7PE
Engine5.7 L / 8 cyl
EmissionsFED
SymptomsPoor Idle Quality, Surge, Low Power
OccursHot, on Accel, Idle
Misc.4L80e Trans

Trouble Codes

45rich exhaust
Message Closed

car Vehicle Data

1993 Chevrolet K2500

VIN 1GCK24K7PE
Engine5.7 L / 8 cyl
EmissionsFED
SymptomsPoor Idle Quality, Surge, Low Power
OccursHot, on Accel, Idle
Misc.4L80e Trans

Trouble Codes

45rich exhaust