Cars running Horribly again!
07-02-2012, 01:26 PM
#1
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Car: 1984 Trans Am
Engine: 350
Transmission: T5
Axle/Gears: 3:73
Cars running Horribly again!
Well I have a 89 GTA with a 350 TPI, i recently replaced the injectors and it ran great for a few days and then out of no where it started running like poop again. Im going to check the TPS Sensor but if it isnt that i have no idea where else to go, any suggestions. The car starts idles like crap, wont rev up and in general just runs like complete ****. Please any suggestions or ideas if you need to know anything more just ask. HELP!!!!!!!
07-02-2012, 02:19 PM
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Location: Longmont, CO
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Car: 1988 IROC
Engine: 5.7
Transmission: 700R4
Axle/Gears: 2.77 posi
Re: Cars running Horribly again!
Just recently had the same symptoms with my IROC, turned out it was the MAF sensor, MAF sensor relay AND the burnoff sensor relay. total cost, doing it myself, was around $220 pictures of relays and sensor below.
http://s662.photobucket.com/albums/u...ent=relays.jpg
http://s662.photobucket.com/albums/u...ent=relays.jpg
Last edited by 84ws689bird; 07-02-2012 at 02:22 PM. Reason: image not showing
07-04-2012, 01:52 AM
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Car: 1988 IROC
Engine: 5.7
Transmission: 700R4
Axle/Gears: 2.77 posi
Re: Cars running Horribly again!
my mechanic/buddy is a GM master tech AND a third gen owner, lol, he said they generally go bad at the same time as the MAF
07-04-2012, 02:13 AM
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Car: 1991 Christine Z28
Engine: RV Cam and Intake 350 SBC
Transmission: 5speed
Axle/Gears: 3.08 ls Posi
Re: Cars running Horribly again!
take your intake plumbing off and spray throttle body cleaner in the intake, these cars are bad about carbon build up. Just follow the directions on the can.
07-04-2012, 05:47 AM
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Car: 1991 Z28 Convertible
Engine: 350
Transmission: 700R4
Axle/Gears: 3.23 pos
Re: Cars running Horribly again!
Check your fuel pressure on the rails to see what you have when you first turn the key. I am not sure of the specs but that would be a great start. Fuel starvation will definitely make these motors run terrible.
07-04-2012, 09:52 AM
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Car: 1984 Trans Am
Engine: 350
Transmission: T5
Axle/Gears: 3:73
Re: Cars running Horribly again!
Well out of no where i got a vats code so im putting a bypass in and then im going to replace the computer to eliminate that problem. Than im going to check fuel pressure and it cant be carbon buildup becuase i actually pulled the entire tpi system off and soaked it in simple green to break down all the carbon.
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