I HAVE A 1992 C1500 5.7 IT HAS A REAL BAD IDLE AT START UP AND WHEN I TURN THE AC ON IT SHUTS OFF SOME TIMES AND WHEN I DISCONNECT THE TIMING PLUG IT RUNS PERFECT. THIS ALL STARTED ABOUT A YEAR AGO WHEN MY CONTROL MODULE IN THE DISTRIBUTOR WENT OUT AND I REPLACE IT WITH AN AC DELCO BUT IT HAS GOTTEN WORSE.
JA: How many miles are on the car? What size is the engine
Customer: 260000, 5.7
JA: What is the model of your '258000 GM?
Customer: 1992 C1500 SILVERADO
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: WHEN I BOUGHT THE TRUCK THE PREVIOUS OWNER REPLACED THE SPARK PLUGS, WIRES AND THE TIMING CHAIN I HAVE SINCE CHANGE THE EGR, MAP, EGR SOLINOID, CAP AND ROTOR AND ALSO THE IAC AND COIL PICK UP
JA: Anything else you think the mechanic should know?
Customer: OH AND MY SES LIGHT WAS COMING ON CODE 13 02 SENSOR BUT SINCE I REPLACED MY CATYLITIC COVERTER THAT FIXED THAT PROBLEM AND SOMETIMES WHEN I TURN THE HEADLIGHTS
ON OR TURN THE AC ON IT IDLES BAD