TBI Throttle Body Injection discussion and questions. L03/CFI tech and other performance enhancements.

Need some answers about TBI.

Thread Tools
 
Search this Thread
 
Old Jun 7, 2005 | 07:28 PM
  #1  
biff85ta's Avatar
Thread Starter
Senior Member
20 Year Member
 
Joined: Oct 2002
Posts: 694
Likes: 0
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?
Reply
Old Jun 7, 2005 | 09:25 PM
  #2  
Benm109's Avatar
Supreme Member
 
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.
Reply
Old Jun 7, 2005 | 09:39 PM
  #3  
biff85ta's Avatar
Thread Starter
Senior Member
20 Year 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.
Reply
Old Jun 7, 2005 | 09:59 PM
  #4  
Gr89RS's Avatar
Supreme Member
iTrader: (5)
 
Joined: Aug 2004
Posts: 1,912
Likes: 0
From: Redondo Beach CA
Car: '02 Z06
TBI wasnt released until 88 so it probably is an 88, unless someone swapped in the TBI
Reply
Old Jun 7, 2005 | 10:04 PM
  #5  
dimented24x7's Avatar
Supreme Member
iTrader: (2)
 
Joined: Jan 2002
Posts: 9,962
Likes: 5
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.
Reply
Old Jun 7, 2005 | 10:17 PM
  #6  
biff85ta's Avatar
Thread Starter
Senior Member
20 Year 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.
Thank you that give me plenty of stuff to check out when I get it home.
Reply
Old Jun 11, 2005 | 07:38 PM
  #7  
biff85ta's Avatar
Thread Starter
Senior Member
20 Year Member
 
Joined: Oct 2002
Posts: 694
Likes: 0
From: Glasgow Kentucky
Car: 04 Vette
Engine: LS1
Transmission: 4L60E
Axle/Gears: 2.73
Well I got it started. It turned out to be a plug not plugged in on the ignition module.
Reply
Old Jun 11, 2005 | 07:40 PM
  #8  
Gr89RS's Avatar
Supreme Member
iTrader: (5)
 
Joined: Aug 2004
Posts: 1,912
Likes: 0
From: Redondo Beach CA
Car: '02 Z06
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Falcon50
DFI and ECM
81
Aug 22, 2020 03:26 PM
cheesehomer
Power Adders
91
Dec 31, 2015 08:48 AM
HoosierinWA
Tech / General Engine
5
Oct 7, 2015 10:15 AM
kkirch15
Interior
2
Sep 30, 2015 04:44 PM
92projectcamaro
Engine Swap
4
Sep 29, 2015 07:07 PM




All times are GMT -5. The time now is 07:55 AM.