1987 G10 4.3 Fuel Injected won't start
December 15th, 2015, 2:00 AM
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1987 G10 4.3 Fuel Injected won't start
Good day. I parked my vehicle the other day, only to come out a couple of hours later and it won't start. It turns over, has spark, but apparently no fuel. Has new fuel pump and filter. Diagnostic code reads MAP sensor. But I replaced it and still won't start. Could another sensor be the problem? Thank you.
December 26th, 2015, 3:50 PM
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i would check for power to the injector harness at the throttle body.you say your getting spark,but no fuel.if you can get a noid light or a 194 peanut bulb ,test for power at the harness that connects to the injectors.you should have power with the key on engine off.if you have a multi meter check for at least 12 volts to the harness.you can check the wiring harness from the injectors to the ecm.is your ecm under the drivers seat.check for any corrosion at the ecm.it could be either a wiring issue in the injector circuit or the driver which controls the injectors.hope this helps.if you find you issue please post your fix.