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09-26-2009, 09:11 AM
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#1
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Join Date: Aug 2009
Posts: 6
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85 Trans Am wont run
I cant figure out whats wrong with the car. I put new gas in the tank thinking that the five year old gas in there would be causing it to not run, but it still doesnt work. its got a new fuel pump, and filter. it will start up but as soon as i give it gas it cuts the engine out. any ideas?
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09-26-2009, 12:00 PM
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#2
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NJFBOA Supporting Sponsor
Join Date: Feb 2006
Location: HULMEVILLE, PA
Posts: 2,023
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Could be a number of things. Check your fuel pressure, also if you ran the bad gas through thr carb it may be gummed up and in need of a rebuild..
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JSSPEEDANDCUSTOM.COM
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09-27-2009, 12:37 PM
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#3
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Join Date: Nov 2004
Location: Randolph
Posts: 198
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Quote:
Originally Posted by 85TA
I cant figure out whats wrong with the car. I put new gas in the tank thinking that the five year old gas in there would be causing it to not run, but it still doesnt work. its got a new fuel pump, and filter. it will start up but as soon as i give it gas it cuts the engine out. any ideas?
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Given the level of detail you provided, I can definitely say that something is malfunctioning. Recommend you fix it.
(some more detail, like what mods and whether it's injected or carburetor, might help...)
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1982 Z28 w/ '01 LS1 + T56, TR224 cam, Katech oil pump, JWIS chain
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09-27-2009, 12:55 PM
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#4
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Join Date: Oct 2008
Posts: 814
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where are you located?
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Formerly known as njbadaSS
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09-27-2009, 11:44 PM
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#5
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Join Date: Jan 2007
Posts: 5,623
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I'm 90% sure this is a friend of mine...Ya'll though MY T/A was bad.... how about you wait till I get over there to look at it. I told you already, its probably the TPS or the MAF. It could also be the timing, or it just needing a tune up. When I have time (wed) I'll stop over with my timing light and multi-meter and we'll figure it out. but in the mean time get the car registered and insured, cause without being able to drive it I can't test it under load.
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2000 Tahoe Z71 5.7
1982 Z28 Pacecar 305
1999 S10 
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09-28-2009, 12:19 AM
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#6
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NJFBOA Supporting Sponsor
Join Date: Feb 2006
Location: HULMEVILLE, PA
Posts: 2,023
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So this is an injected car then? Definately sends the line of diagnosis in a slightly different direction.
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JSSPEEDANDCUSTOM.COM
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09-28-2009, 08:29 AM
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#7
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Ayatollah of Rock N Rolla / Admin
Join Date: Mar 2006
Location: Parts Unknown
Posts: 12,573
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Quote:
Originally Posted by JSPERFORMANCE
So this is an injected car then? Definately sends the line of diagnosis in a slightly different direction.
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Yeah, what type of top end is on the car??
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09-28-2009, 10:37 AM
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#8
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Join Date: Jan 2007
Posts: 5,623
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its a TPI 305 supposedly... So that tells me that the engine doesn't belong in that car, know the kid he bought it from, its a hack job + some. I'm going to have to go over every inch of wire and test the signal from a quite few sensors. to figure out wtf is going on...actually bout to get on the phone with him now
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2000 Tahoe Z71 5.7
1982 Z28 Pacecar 305
1999 S10
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10-01-2009, 05:08 PM
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#9
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Join Date: Jan 2007
Posts: 5,623
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....was a carbie car. has the 86 accessories on it, with a TPI top end, can't even start to understand the issue because the fuel pump gets no power. on top of that, the wire harness is beyond hack-job the GFX are not right. the car its self used to be white and now its purple. it ain't worth the $110 he spent on it
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2000 Tahoe Z71 5.7
1982 Z28 Pacecar 305
1999 S10
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10-02-2009, 10:57 AM
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#10
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Ayatollah of Rock N Rolla / Admin
Join Date: Mar 2006
Location: Parts Unknown
Posts: 12,573
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Quote:
Originally Posted by bubba428
....was a carbie car. has the 86 accessories on it, with a TPI top end, can't even start to understand the issue because the fuel pump gets no power. on top of that, the wire harness is beyond hack-job the GFX are not right. the car its self used to be white and now its purple. it ain't worth the $110 he spent on it
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Let me preface this by saying I've never worked on a TPI setup before so this is purely a guess.
If it was a carb car, the fuel pressure may be way too low for an injected setup. Is it an EFI fuel pump?
Last edited by WildBillyT; 10-02-2009 at 11:00 AM.
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