× 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
1990 Chevrolet 3500 5.7L MIL Lamp on
Posted to GM Driveability on 7/12/1999

Wildlands firefighting truck has been running hot in the past. Customer put in bigger radiator, 180 deg. thermostat, removed clutch from fan. Now, runs at ~180 in town but goes up to 195 at highway speeds. Also sets #43 code, (electonic spark control failu...

 
Message Closed w/FIX

car Vehicle Data

1990 Chevrolet 3500

VIN 1GBJK34KLE
Engine5.7 L / 8 cyl
EmissionsOBDI
SymptomsMIL Lamp On
OccursCruise

Trouble Codes

43ESC Failure electronic spark control
Message Closed w/FIX

car Vehicle Data

1990 Chevrolet 3500

VIN 1GBJK34KLE
Engine5.7 L / 8 cyl
EmissionsOBDI
SymptomsMIL Lamp On
OccursCruise

Trouble Codes

43ESC Failure electronic spark control