1989 GMC Truck Repair Question
K1500 no spark
1989 GMC Truck V8 Four Wheel Drive Manual
While driving, my truck just shut down. I have no spark. I replaced the plugs, wires, Dist. cap, rotor, ICM and coil. I have 12v at the coil and still no spark.Could it be the PCM or the ECM?
Test the distributor pick-up coil.
where is that located and how do you test it. Just so you are aware, I have noone to help today.
Its inside the distributor
The only thing inside the distributor is the rotor and the ICM, have replaced both of them
Disconnect the 2 wire connector that connects to the ignition module and using an OHM meter probe the disconnected 2 wire electrical connector that goes to the PICKUP COIL and you should have an OHM reading of 500 to 1500 ohms.
Also check each lead of the pickup coil to be sure that neither wire is shorted to ground.
all that seems to be fine
Where are you checking for spark? coil or the plugwire end
at the spark plug
Check it at the coil side