Question about 1988 Chevrolet Suburban
It would seem like a problem with the ECU or the fuel pump, but the common link between those two systems is the ignition module that is located on the distributor under the distributor cap, and that module is actually responsible for the fuel pump signal to run the fuel pump, the dwell signal to cause the ignition coil to fire, and also the signal that the ECU uses to time and fire the injectors, and you can remove the ignition module and have it tested for free at most auto parts stores.
Before you replace the ignition module back into the distributor, be sure to clean the mounting surface for the ignition module, and be very certain that you do use the silicone grease or die-electric compound (which ever one came with the module) to completely cover the metal mounting surface of the ignition module with that grease/compound because it is a heat sink and the ignition module will burn out in no time if you fail to use the heat sink grease/compound.
Posted on Jun 02, 2010
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Posted on Jan 02, 2017
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