2000 Pontiac Grand Am Won't Start

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BUCKCOCOA
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Ihave a 2000 pontiac grand-am drove it home went out the next day tried to start it it backfired and hasnt stated since.i replaced ignition module,plugs,coils and still will fire one time and thats it till ya take plugs back out and dry them off and put them back in and same thing.any ideals ? oh i forgot it has a 2.4l.and has no codes.
Mar 2, 2006 at 2:09 AM
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2CARPRO BOB
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Check the fuel pressure and also check to see if the fuel pressure regulator has failed.
Mar 4, 2006 at 5:33 AM
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BUCKCOCOA
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[quote:717328ed46="2CarPro Bob"]Check the fuel pressure and also check to see if the fuel pressure regulator that has failed.[/quote:717328ed46]i have checked fuel pressure was at 57 lbs.i have replaced camshaft sensor and crankshaft sensor it helped it almost starts once and thats it how would i test regulator thanks for the help i dont know what to do next?
Mar 4, 2006 at 8:05 AM
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BUCKCOCOA
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[quote:60e3f8bd31="buckcocoa"][quote:60e3f8bd31="2CarPro Bob"]Check the fuel pressure and also check to see if the fuel pressure regulator that has failed.[/quote:60e3f8bd31]i have checked fuel pressure was at 57 lbs.i have replaced camshaft sensor and crankshaft sensor it helped it almost starts once and thats it how would i test regulator thanks for the help i dont know what to do next?[/quote:60e3f8bd31] i have taken this car to the shop if i find out what the poblem is i will post im lost
Mar 7, 2006 at 10:55 AM
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NOS
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the 2.4 is one of the worst motors there is it is what they call a quad four when you pulled the top of the motor to change the moduel did you check the plastic cover real close for carbon tracks these will cause hard start cross firing and such also i have seen cam alining pins on sprokets sheer and put it out of time . the pressure foot for the timing chain is oil feed sometimes a backlash from a back fire will cause malfunction and put out of time condection thes last few thins that i have talked about need to be done by a tech that has the proper tools and equipment. but the cove you can do if there is any doubt change it may save you time and a bunch of money. hope this helps :D (NOS)
Mar 8, 2006 at 2:47 PM
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BUCKCOCOA
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i have had this car in a shop for 3 wks. they called today and said come get it they cant figure it out. i seen another post on here with same problem.can it be pass-lock sensor.it allways fires.has fuel,and compession. anyone got a ideal??????????????im going to take it to another chevy garage but its getting in my pocket!!!!!
Mar 29, 2006 at 7:28 AM
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NOS
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i have seen car go into lock mode because the person used a key different than the one that came with the car. if you have done the same thing try useing the orginal key. you may beable to use a dup key several times before it happenes most cars have a chip built into the key if this key is not used the car won't start it goes into lock mode nad most times has to be taken out by a dealer or useing the right key . NOS
Mar 29, 2006 at 3:01 PM
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NOS
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i have seen cars go into lock mode because the person used a key different other than the one that came with the car. if you have done the same thing try useing the orginal key. you may be able to use a dup key several times before it happenes most cars have a chip built into the key if this key is not used the car won't start it goes into lock mode and most times has to be taken out by a dealer or useing the right key . NOS
Mar 29, 2006 at 3:04 PM
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BUCKCOCOA
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I GOT THIS CAR HOME TODAY AND GOT OUT THE ORIGNAL KEY TRIED TO START THEN LEFT IN RUN POSITION AFTER NO START FOR 10MIN. I DID THIS THREE TIMES AND IT STARTED. IM A HAPPY MAN THANKS.....
Mar 31, 2006 at 11:15 AM
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NOS
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well bud i'am glad you got it running man glad i could help. i have been doing this kinda work for long time seen a lot of different wierd stuff happening congrats ( NOS ).
Apr 3, 2006 at 12:44 PM
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Suggested Repair

Use the original chipped ignition key and perform the passlock relearn: after a no-start, leave the key in RUN for about 10 minutes and repeat as needed. A non-original key can put the system in lock mode and prevent restart even when the engine fires, has fuel, and has compression. Fuel pressure was already about 57 psi; other items discussed but not confirmed were the fuel pressure regulator, ignition-module cover carbon tracking, and timing-chain or cam-sprocket alignment after the backfire.

Conversation Summary

A 2000 Pontiac Grand Am 2.4L backfired on startup and then would not stay running. It would fire once, wet the plugs, and set no codes. The owner had already replaced the ignition module, plugs, coils, camshaft sensor, and crankshaft sensor, and measured fuel pressure at about 57 psi. A shop could not find the cause. Experts suggested checking the fuel pressure regulator, ignition cover for carbon tracks, and possible timing damage from the backfire, then raised a passlock issue from using a non-original key. Using the original key and leaving it in RUN for about 10 minutes, repeated three times, allowed the car to start.

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