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2001 4-dr LT intermittent starting

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Old 09-10-2010 | 08:58 AM
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Hi all-

Intermittent starts on 2001 4-dr 4WD LT. Once it decides to not start, it won't start for a period of hours/overnight. It seems like when it fails to start, it often begins to engage, but doesn't quite make it, and quits. I believe the engine is turning over; if I step on the gas, it maybe seems to rumble/shake a bit more during effort to start?

Allegedly (shady garage) plugs, wires, distributor, secondary AIR pump all replaced 4-5 months ago, when previous apparently moisture-related starting issues encountered and EVAP and AIR codes were preventing passing NYS inspection.

Dealership said something about the fuel pressure sensor before I took it to the shady garage, who didn't replace fuel pressure sensor.

Only codes are P0440. Not the gas tank cap; haven't had it smoke tested, but need to if I'm going to figure out what's throwing the small EVAP leak.

Anything obvious I should be looking at here? I'm hoping to drive this thing through the winter before I replace it, I can't afford to right now.

Thanks in advance-
--ab

(And yes, allegedly the evap vent solenoid was dealt with 4-5 months ago as well.)

(And, yes, again as far as evap, the hoses and fittings around the canister look fine, mostly new in fact. Purchased as such used, two years ago, throwing code ever since purchase.)
 

Last edited by swartlkk; 09-10-2010 at 09:48 AM. Reason: *Combining Consecutive Posts* - Please use the EDIT feature to add additional information to your post if another member has not responded prior to waiting 24 hours.
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Old 09-10-2010 | 06:27 PM
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Could possibly be a fuel pump issue. Have you read and done the DIY article posted on this forum regarding the 96+ fuel system diagnoses?
 

Last edited by 1998MSO; 09-10-2010 at 06:27 PM. Reason: Fix typo
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Old 09-10-2010 | 07:17 PM
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I own a 93 trans am with the lt1. Question one when is the last time you replaced your fuel filter?

Two. Do you have cats on it?
 
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Old 09-10-2010 | 07:17 PM
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im sorry didnt mean to post here. I was on the wrong forum. My bad.
 
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Old 09-13-2010 | 07:44 AM
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Originally Posted by 1998MSO
Could possibly be a fuel pump issue. Have you read and done the DIY article posted on this forum regarding the 96+ fuel system diagnoses?
I think you might be right. It was feeling like some sort of fuel issue, but I didn't bother to listen for the pump. It's only starting up intermittently or not at all with the key turned.

Can I roll-start this thing in order to drive it two miles down the road to a garage, rather than pay $150 for a tow?
 
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Old 09-13-2010 | 10:38 AM
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Don't think you can push start the Automatic transmission version, and if it's your fuel pump push starting probably won't work anyway.
You might try this trick; Turn the key to "on" (not engaging the starter) then to "off" several times. If it's a bad fuel pump 'sometimes' this helps get one last go from the pump. Worth a try huh?
Let us know what you find out.
 
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Old 09-13-2010 | 11:02 AM
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Originally Posted by 1998MSO
Don't think you can push start the Automatic transmission version, and if it's your fuel pump push starting probably won't work anyway.
You might try this trick; Turn the key to "on" (not engaging the starter) then to "off" several times. If it's a bad fuel pump 'sometimes' this helps get one last go from the pump. Worth a try huh?
Let us know what you find out.
Tried. I think I hit that limit when I picked it up out of the supermarket lot and drove it the 3-4 miles to my office parking lot. (home is another 10 miles away.)
 
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