Need some answers about TBI.
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Joined: Oct 2002
Posts: 694
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From: Glasgow Kentucky
Car: 04 Vette
Engine: LS1
Transmission: 4L60E
Axle/Gears: 2.73
Need some answers about TBI.
I have just purchased my first TBI car. I have a TPI car in the garage but it is slightly broken.
Anyway here is my problem. The injectors do not fire. They have been tested with a noid light and nothing happens. Where do I need to start looking to fix this problem?
Anyway here is my problem. The injectors do not fire. They have been tested with a noid light and nothing happens. Where do I need to start looking to fix this problem?
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Joined: Feb 2004
Posts: 1,231
Likes: 1
From: Greenville, SC
Car: 1991 Chevy Camaro
Engine: 305 TBI
Transmission: 700R4
Axle/Gears: 3.42
Just out of curiousity, what year is the car?
Anyway, first thing I'd do is check for spark. That can rule out a lot of possible things, either way.
Anyway, first thing I'd do is check for spark. That can rule out a lot of possible things, either way.
Thread Starter
Senior Member

Joined: Oct 2002
Posts: 694
Likes: 0
From: Glasgow Kentucky
Car: 04 Vette
Engine: LS1
Transmission: 4L60E
Axle/Gears: 2.73
He keeps saying 87 and I didn't think to check while I was there but I would bet it is an 88. (seller owns a used car lot and has several f-bodies of his own) I should have the car home this weekend so I can check it out better.
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From: Moorestown, NJ
Car: 88 Camaro SC
Engine: SFI'd 350
Transmission: TKO 500
Axle/Gears: 9-bolt w/ 3.23's
There are several things that will cause the injectors not to fire: Lack of power at the unswitched + side of the injector connectors, dead module, dead p/u coil, lack of DRPs from some other problem, dead injector drivers, wiring faults, bad grounds, just to name a few. Does the fuel pump come on when your cranking the engine? If no pump, then the problem is likely within the dist. itself. I even had a faulty ground due to a dirty dist. base that caused a no spark or fuel problem.
Thread Starter
Senior Member

Joined: Oct 2002
Posts: 694
Likes: 0
From: Glasgow Kentucky
Car: 04 Vette
Engine: LS1
Transmission: 4L60E
Axle/Gears: 2.73
Originally posted by dimented24x7
There are several things that will cause the injectors not to fire: Lack of power at the unswitched + side of the injector connectors, dead module, dead p/u coil, lack of DRPs from some other problem, dead injector drivers, wiring faults, bad grounds, just to name a few. Does the fuel pump come on when your cranking the engine? If no pump, then the problem is likely within the dist. itself. I even had a faulty ground due to a dirty dist. base that caused a no spark or fuel problem.
There are several things that will cause the injectors not to fire: Lack of power at the unswitched + side of the injector connectors, dead module, dead p/u coil, lack of DRPs from some other problem, dead injector drivers, wiring faults, bad grounds, just to name a few. Does the fuel pump come on when your cranking the engine? If no pump, then the problem is likely within the dist. itself. I even had a faulty ground due to a dirty dist. base that caused a no spark or fuel problem.
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