04-09-2008, 09:35 AM
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#1
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GLS member
Join Date: Feb 2008
Location: NY
Posts: 1,226
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when the gm dealer doesnt know?
what do you do when you have a 04 alero that has a rough idle and rougher in drive, feels like its gunna stall between 30-50mph and sometimes has a hard time starting and the gm dealership looks at it three times and doesnt know what the problem is? where do you turn? car has had a full tuneup, 3part fuel system cleanup new 02 sensor, dont know what else to try.
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04-09-2008, 09:40 AM
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#2
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GL Member
Join Date: Feb 2008
Location: Howell, MI
Posts: 241
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if it were me, i would check the basics, even though the dealership should have, belt, plugs, wires, air filter, look for leaks. but thats the extent of stuff i know, maybe change the fuel filter, even though it shouldnt be that bad.
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04-09-2008, 09:41 AM
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#3
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GL Member
Join Date: Feb 2008
Location: Crofton, MD
Posts: 839
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Different dealership? Then contact the regional rep.
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04-09-2008, 10:33 AM
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#4
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GLS member
Join Date: Feb 2008
Location: NY
Posts: 1,226
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sorry forgot to list fuel filter belt was both also changed they said the only vaccuum leak was the intake maifold gasket which they also replaced. both hub assemblys were replaced battery window regulators air filter plugs wires im beginning to believe this was a flood car wouldnt the car fax report have said it was? the car fax was mint on this car which is why i bought it feb 8 and since then its been in the shop foreverything this idle problem is the only issue they cant fix i have no ses codes on so im lost. sorry forgot to state it has 56k and one owner
Last edited by irondiezl3 : 04-09-2008 at 10:36 AM.
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04-09-2008, 11:28 AM
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#5
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GL Member
Join Date: Feb 2008
Location: Howell, MI
Posts: 241
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see if there was a way to contact the previous owner of the vehicle, maybe you can get some info from them?
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04-09-2008, 01:04 PM
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#6
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Moderator
Join Date: Nov 2004
Location: Long Grove, IL
Posts: 5,002
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No Service Engine Soon light?
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Cliff Scott
2004 Alero GX w/sport pkg - Sold, living somewhere in WI now.
2011 Saab 9-5 Turbo4 M6
2004 Corvette Convertible M6
1994 Chevy Beretta - Quad4/M5
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04-09-2008, 01:23 PM
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#7
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GLS member
Join Date: Dec 2006
Location: Montreal, Qc, Canada
Posts: 1,876
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Loose battery connection? Corrosion on the battery cables?
__________________
2 door 2000 Black GX With a stick: M45 eaton supercharger - Quad4's 57mm Throttle body - Custom WAI - KYB GR-2 struts - CM Lowering springs - Front and rear strut tower brace - R1 concept zinc plated drilled/slotted rotors with semi-metallic pads - short shifter.
Quote:
Originally Posted by Alerosaint
the #6 bolt torque..its impossible to get...unless I use telekenesis
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04-09-2008, 01:28 PM
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#8
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GLS member
Join Date: Feb 2008
Location: NY
Posts: 1,226
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new battery checks out fine and yea no ses lights wierd. funny thing is the idle gets worse when its in drive. the only thing dealer suggested was maybe just maybe the fule pump isnt putting out the right pressure but said no way to know. to be honest it was very very minimal difference but when i put the new fuel filter in it seemed to get just a tad bit rougher idle but very small difference and i know its intalled correct thought maybe it somehow got air into the line even tho i never heard of that but ive drove it to complete empty couple times to see if it helped and it didnt. idk its got new factory plugs and wires too i stayed factory to be safe. wierd how none can diagnose the issue
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04-09-2008, 01:48 PM
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#9
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GX Member
Join Date: Apr 2006
Location: Owensboro,KY
Posts: 69
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Mine did that twice. After replacing the throttle body, and when the PCV elbow fell off somehow. Double check the throttle body gasket and the PCV hose.
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My Forsale Thread
Black 2dr 2000 GLS
30% Tint - Lowered
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-Gone
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04-09-2008, 02:09 PM
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#10
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3500 DONE!
Join Date: Apr 2006
Location: Albany, NY
Posts: 5,915
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Quote:
Originally Posted by irondiezl3
fuel pump isnt putting out the right pressure but said no way to know.
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hmmm......isnt there a way to check the pressure in the fuel lines? I remember last semester we tested the fuel lines in a few of the cars we had in the shop.
__________________
2002 3400 & 3500 GL "Ruby"-->R.I.P. 163k. My first car. Put 130k on her.
2000 3500 GLS "Robin"-->Intake,Headers,Exhaust,H&R springs,KYB AGX,Sway bars,Strut bars and more
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04-09-2008, 02:16 PM
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#11
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GLS member
Join Date: Aug 2006
Location: Grand Forks, ND for school; Langdon, ND home
Posts: 2,632
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hook er up to a fuel pressure tester. If not that, try a different dealership or contact regional rep.
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04-09-2008, 02:21 PM
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#12
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Aleromod part owner
Join Date: Nov 2003
Location: Far Northeast Philadelphia, PA
Posts: 18,199
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Yes you can check the fuel pressure in the system, there is a port on the pass side of the motor, but I'm not sure where.
Passlock problems? MAF going bad? My MAF was so bad that when I replaced it the car acted up, chriping gears under normal accel, and stalled out and wouldn't restart. I had to unplug it to restart the car and quickly plug it back in before the car died.
Seems like in your case, vacuum leaks and what not are covered. See if there is a shop around that has a progressive scanner. My new mech has one and they are awesome. Got the problem fixed on a test drive
__________________
33% ALEROMOD OWNER!!
2000 Olds Alero 3400 SFI 14.53 @ 94.93
1985 Olds Delta 88 307 SBO 17.96 @ 76.99
2007 Volvo V50 T5 6M 15.782 @ 89.12
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04-09-2008, 02:42 PM
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#13
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GL Member
Join Date: Feb 2008
Location: Crofton, MD
Posts: 839
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4 cyl or 6? If it's a 6, the nipple for the fuel pressure is on the end of the rear fuel rail (closest to the firewall), sticking out from under the upper intake manifold on the passenger side. It has a small black plastic cap on it. Remove the cap and it looks a bit like a larger version of the valve stem on your tires. That's where they hook up a fuel pressure gauge. So if they are saying there's no way to check it they are full of it. If it's a 6, "With the ignition switch "ON" and the fuel pump "RUNNING", the fuel pressure indicated by the fuel pressure gage should be 284-325 kPa (41-47 psi)." Not sure where it's at on a 4, but it will be there somewhere. If it's running that poorly and not throwing any SES lights or codes, it could be a failing ECU. The other option is that it's an intermittent code, and sometimes they don't result in a light, but from the sounds of it, it should be throwing a code.
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04-09-2008, 03:06 PM
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#14
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GLS member
Join Date: Feb 2008
Location: NY
Posts: 1,226
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damn my maf seems clean yea they wont pay to check everything so ill have to check it myself what should i look for ?
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04-09-2008, 04:01 PM
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#15
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GX Member
Join Date: Apr 2008
Location: Bellmore, NY
Posts: 160
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IAT sensor
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04-09-2008, 06:17 PM
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#16
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Aleromod part owner
Join Date: Nov 2003
Location: Far Northeast Philadelphia, PA
Posts: 18,199
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^^ Good point also easy to overlook
__________________
33% ALEROMOD OWNER!!
2000 Olds Alero 3400 SFI 14.53 @ 94.93
1985 Olds Delta 88 307 SBO 17.96 @ 76.99
2007 Volvo V50 T5 6M 15.782 @ 89.12
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04-09-2008, 09:06 PM
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#17
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GLS member
Join Date: Feb 2008
Location: NY
Posts: 1,226
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wouldnt that throw a ses light though?
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04-10-2008, 05:20 PM
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#18
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GL Member
Join Date: Apr 2007
Location: Olney, IL
Posts: 306
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just wondering, does your ses light come on and then go off when you turn on the ignition?
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04-10-2008, 05:24 PM
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#19
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Trying to get it together
Join Date: Aug 2006
Location: somewhere
Posts: 617
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Can AZ give you a monitor reading and freeze frame? This would help.
Other items to consider, remove the O2S before the cat and test drive the car. If it runs better you have a locked cat.
Check for vacuum leaks using a 1 can of carb cleaner.
Is you engine making a loud grinding noise from the belt side?
Do you have this problem after 35mph?
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04-10-2008, 05:56 PM
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#20
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GLS member
Join Date: Feb 2008
Location: NY
Posts: 1,226
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i believe it does the light when i first start goes on with all the other lights that go on and off i know it hasnt came on and off though since i got it normally any other time tho. umm the idle is rough always but its rough enough to feel in ur feet once car is put in drive. the only time it feels like its gunna stall out is between 30-50mph thats where the dealer guessed but didnt check that maybe im losing fuel pressure? idk if i had to guess in my opinion the car feels like its just having a hard time breathing but im not mechanic.
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