Question about 1999 Pontiac Bonneville
Check and make sure the wires at the starter are all in good shape. The main power wire that powers the ignition system connects at the solenoid. It may be green/corroded and not sending power to the ignition switch. Also check the crankshaft sensor, there is a distributor control module that controls the spark on that model. It is usually mounted near the coil and the wires from the distributor run in to it. Here is a site that will help you, even if you are not familiar with how to test these units. This is for a Pontiac sunfire but the procedure is basically the same, I believe they may have you specific model at this site as well. syautodiagnostics.com/cavalier_sunfire_ignition/cavalier_sunfire_test_1.php
Posted on May 11, 2014
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Posted on Jan 02, 2017
Check your oil pressure sensor located where the oil filter attaches,You might also want to check to see if it has a crank positioning sensor.
Posted on Dec 26, 2009
SOURCE: car turns over but wont start
Another quick way to isolate a spark or fuel problem is to spray starting fluid into it then crank it up. If it fires up and runs a few seconds, it's a fuel issue, if not then it's probably a spark issue. If it cranks up, the fuel issues can be many. Mine happened to be the fuel pump went out. Isolate the fuel pump issue first. When you turn the key on you should hear the fuel pump run for a couple of seconds. If you don't, it's probably the fuel pump or the wiring (relay) to the fuel pump. Even if you do hear it (as was my case), it can still be the problem as there is a rubber hose that connects the fuel pump to the fuel line that can deteriorate and come off. So if you you can hear the pump run, make sure the fuel is making it to the throttlebody. If you loosen the fuel filter after the pump has ran, there will be pressure in it and it will spray fuel out (make sure there are no ignition sources if you do that). If you have a V6, there is a pressure releaf valve on the fuel rail, you can check there. If nothing comes out after or with the fuel pump running, that little hose came off and you'll have to get to the fuel pump in the fuel tank. If you go to that trouble, replace it, you're there anyway.
Posted on Apr 29, 2010
3.8 1999 firebird the 3/6 coil pack gets power but is not firing everything has been changed even the coil pack still sayin misfire
Posted on Sep 17, 2011
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