Question about Pontiac Grand Prix
Hi, the only thing common between the fuel pump circuit and the ignition circuit is the ECM itself. Recommend you check the ECM fuse. Not sure if it's in the car or the engine compartment fuse box. If this isn't the problem, you may have 2 separate problems. Your car doesn't have passlock anti-theft does it?
Posted on Apr 03, 2011
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Here are couple of steps you need to check to your car. Do a test for spark at the plugs. Remove one of the plug wires from a plug and hold it near grounded metal. (If the plug end has a long insulated shroud, you may have to improvise to get ground close enough to the end of the wire.) Have someone crank the engine while you watch for spark. If you get an 1/8" or so of spark, that should be enough to fire. Check the distributor cap inside for signs of cracks or carbon arc tracks.
Also, check to see that the little carbon contact for the center terminal is in place; without that you can have spark but it won't get to any plug wires. Test your coils by using a voltmeter. Connect the tester (meter or bulb) from ground (engine case) to Terminal #15 on the coil. Never mind what the actual markings on the coil say; connect to the terminal which has the thick Black wire from the main harness on it. I say never mind the markings on the coil because someone may have swapped wires around which could lead you astray. The tester should show 12 volts (or 6v). If it doesn't, there is no power from the Ignition Switch.
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Posted on Apr 03, 2011
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Posted on Jan 02, 2017
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