it will not start up unless I hold down the gas?

2003 PONTIAC GRAND AM
128,000 MILES • 2.2L • 4 CYL • 2WD • AUTOMATIC
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CBSAYERS82
I was messing with the evap vapor canister and now I can’t get it to start. I have waited several minutes between tries. This happens every time I fill up the gas tank. At that time it won’t start up unless I hold down the gas pedal and in a few seconds it starts. This time, i did not just get fuel, it will not start just crank. I’m currently wait a long time to try and crank and hoping for the best.
Jun 28, 2025 at 1:54 PM
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STRAILER
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It sounds like the EVAP purge solenoid is stuck open and has been flooding the engine. I would remove the spark plugs and replace them if there are black (soot fouled). Here is the location of the purge valve, if you remove it, you should not be able to blow through it. Check out the images (below). Let us know how it goes.

Jun 29, 2025 at 10:16 AM
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CBSAYERS82
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Ken! Thank you for the reply. I am actually about to grab a new evap purge canister from my local auto parts store. I will be swapping it out to see if I can get it started. will have my mechanic look at the spark plugs soon.
Jun 29, 2025 at 10:19 AM
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CBSAYERS82
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Update, it still won't start. Just crank...tow to the mechanic tomorrow...yay lol
Jun 29, 2025 at 1:09 PM
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STRAILER
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Did you remove one spark plug to see if it is black? If the spark plugs are carbon fouled the engine will not start.
Jun 30, 2025 at 10:04 AM
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CBSAYERS82
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I will pass that on to the mechanic. He helped me with spark plugs last time I tried to "upgrade" them with Bosch brand...that GM 2.2 Ecotec did not like Bosch, lol.
Jun 30, 2025 at 4:05 PM
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STRAILER
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Okay, sounds good, please let me know what they say.
Jun 30, 2025 at 5:42 PM
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CBSAYERS82
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Hey Ken, I found out a crankshaft sensor was replaced along with a few other items, including several fuses. I will list those parts tomorrow when I get the bill. I picked her up and she started right up and ran great.
Jul 8, 2025 at 2:56 PM
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STRAILER
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Yep, I weak crankshaft sensor will cause this, rare though, good mechanic you found. Glad you got it fixed. Please let me know what else they found.
Jul 8, 2025 at 3:33 PM
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CBSAYERS82
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Hello again. My ignition coil, ignition module, and crankshaft sensor were replaced. She starts up very fast now and is running great! Thank you
Jul 11, 2025 at 5:09 AM
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STRAILER
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Thanks for letting us know, we are here to help when you need us :)
Jul 11, 2025 at 11:24 AM
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CBSAYERS82
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She’s starting up immediately and my idle sounds are a lot better too. Thank you!
Jul 11, 2025 at 6:47 PM
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