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I have a 1999 Chevrolet Suburban 1500, 350 V8,
check the fuel system
pump, regulator, fuel pressure damper , return valve
when the key is on the system needs to be pressurized and maintain pressure, if you dont have this , recheck your fuel system
if everything is ok, than cranck the engine and look for injector fault
on Nov 07, 2017
2000 5.3ltr silverado will not start
Which ECM / PCM fuse was burnt ? How did you check fuel pressure ? With a pressure gauge or just pushing the scrader valve an seeing fuel dribble out ? Pull a plug wire an see if there is spark .
Engine Cranks But Does Not Run
The Engine Cranks but Does Not Run diagnostic table assumes that the battery condition and the engine cranking speed are OK. If the battery condition and the cranking speed are not OK, refer to Diagnostic System Check - Engine Electrical in Engine Electrical for diagnosis. Make sure that there is adequate fuel in the fuel tanks.
• Check the duct work between the mass air flow (MAF) sensor and the throttle body for air leaks.
• A malfunctioning MAF sensor may cause a no start or a stall after start. If you suspect this, disconnect the MAF sensor. The powertrain control module (PCM) will default to the speed density in order to calculate the load and the air flow. If this corrects the condition and the connections are OK, replace the MAF sensor.
If the steps above check OK, refer to Symptoms .
The numbers below refer to the step numbers on the diagnostic table.
It may be necessary to connect a battery charger to the battery for this step. If the battery state of charge is low, the scan tool may reset during the cranking test.
This step tests the ignition relay for proper operation. The ignition relay supplies voltage to the injectors and the ignition coils. When the ignition relay is not operating properly, a no start condition occurs. If the test lamp does not illuminate, this indicates the ignition relay is not suppling a voltage to the fuses.
The crankshaft position (CKP) sensor is located above the starter.
The camshaft position (CMP) sensor is located at the rear of the engine behind the intake manifold.
The ignition feed circuit for the CMP and CKP sensors is internally connected within the PCM. A short to ground on either circuit will cause a no start condition.
The fuel cap may need to be removed in order to hear if the fuel pump is operating.
At this point the engine should start. Refer to Hard Start for further diagnosis.
on Mar 23, 2017
What If i remove the 2 catalytic convertors what do I do with o2 sensors? Will the PCM get confused?
It will run fine,,, may throw codes,, burn more gas,,seems to have more power,,, you can leave the o2s in wont hurt nothin,,, you cant pass emmisions without cats,,,but it will run fine
on Mar 07, 2015
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