STARTING PROBLEM

1991 Chevrolet Truck

Tiny

rockymtnspot

February, 9, 2011 AT 5:29 PM

1991 chevy 3500 w/ 454. Intermittant problem starting. No spark or fuel. I have replaced ecu, ignition module, cap rotor, coil wires and plugs. Fuel filter and relay.

FOUND 51583 RELATED QUESTIONS

12 Answers

Tiny

JDL

February, 9, 2011 AT 5:37 PM

Did check primary voltage at the coil, pink wire, goes hot with the key on. Any voltage? Any applicable trouble codes? The pick-up coil sends a signal through the ignition module to the computer, without that signal, no spark or injector pulse.

Tiny

rockymtnspot

February, 9, 2011 AT 6:03 PM

I replaced coil already. Do not know how to check for pulse. This problem is wierd. All of the sudden it will start and run for 2 to 5 weeks, then just not start.

Tiny

rockymtnspot

February, 9, 2011 AT 6:04 PM

I am going to check for codes now

Tiny

JDL

February, 9, 2011 AT 6:15 PM

Did you check for voltage on the pink wire, key on. Which coil did you replace? I don't believe you can replace pickup coil with removing distributor?

Tiny

rockymtnspot

February, 9, 2011 AT 6:15 PM

I just checked for codes. There were no codes thrown.

Tiny

JDL

February, 9, 2011 AT 6:17 PM

Can you answer my questions about the pick-up coil and pink wire?

Tiny

rockymtnspot

February, 9, 2011 AT 6:19 PM

I replaced the coil that is outside of distributer. Where the coil wire goes.

Tiny

JDL

February, 9, 2011 AT 6:31 PM

How about the pink, use a voltmeter, should be hot/voltage with the key on.

Tiny

rockymtnspot

February, 9, 2011 AT 7:03 PM

I dont have voltmeter. I have TBI with 2 injectors. One injector has a red and blue wire and the other injector has a green and white wire. I used a simple test light and checked the red wire and it lit up with the ingnition turned on.

Tiny

JDL

February, 9, 2011 AT 7:23 PM

You said you have no spark. Without at least a voltmeter or testlite, it's hard to do any testing.

Please login or register to post a reply.

Crankshaft Position Sensor Replace Chevrolet
Crank Angle Sensor Replacement Mercedes Benz
Fuel Pump Replacement Ford Mustang
Fuel Pump Replacement
Fuel Pump Pressure Test
Fuel Pump Test Chevy Tahoe