1991 Chevy Suburban (starts and dies)

Asked by May 09, 2017 at 03:27 PM about the 1991 Chevrolet Suburban V2500 4WD

Question type: Maintenance & Repair

I have 1991 Chevy Suburban that doesn't want to run. It
starts and then dies within a few seconds. It will do this a
couple of times and then it won't start at all. Any ideas?

4 Answers

98,445

First thing I would check is the codes, you may have a sensor that is sending the wrong signals so the ECM is just shutting it down, other things could be a failing ignition module, distributor pickup or even an ignition coil overheat.

4,945

I would check the Distributor Cap and Rotor. The seal that keeps water out of the Cap will crack and crumble after many years of heating up and cooling down. This would be an inexpensive and and easy fix. Best of luck!

1 of 1 people found this helpful.
90

what are the things that you.do in the car and what are the things that you have check in the car.but to my own understansing i will like you to check the fuel pump,the air flow meter and also check if the injector mouth open and if it cabrator then try.to service it.

98,445

As it will at first start and run even if you ever so briefly, you need to check fuel pressure and flow, for that you need a fuel pressure tester for fuel injection, you can also check for injector pulse with just a simple test light between the two connections and crank,it over, if the light flashes you have injector signal, you can check for spark simply by pulling of a plug wire and an old spark plug grounded to the block and crank it over if you have spark it needs to be bright blue not a dull yellow, if yellow it could be plug wires, cap , rotor, or even the coil itself. For the rest you really need a scan tool for your rig that can show you the real time data, it is just something most guys have in thier tool boxes these days, just too much is electronic these days and you need a way too read the outputs.

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