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

Injector nightmare

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Old Mar 28, 2012 | 04:20 PM
  #1  
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Car: 89 camaro iroc, 89 camaro rs
Engine: 350-iroc / 305 rs
Transmission: 700r4 / t5
Injector nightmare

Ok os I have a 89 305 tbi and I can't get the injectors to start firing and I know that I have fuel presser all the way up and I changed ingenious model and the ecu need help with this
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Old Mar 28, 2012 | 04:33 PM
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Re: Injector nightmare

do you have loss of spark as well?
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Old Mar 28, 2012 | 05:38 PM
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From: Las Vegas
Car: 89 camaro iroc, 89 camaro rs
Engine: 350-iroc / 305 rs
Transmission: 700r4 / t5
Re: Injector nightmare

Originally Posted by tunedperformanc
do you have loss of spark as well?
No I still have spark
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Old Mar 28, 2012 | 05:44 PM
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Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: Injector nightmare

I think 89 in tbi was the first year of vats, that would disable the injector pulse.
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Old Mar 28, 2012 | 05:45 PM
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Re: Injector nightmare

do you have power to the injectors. there are two fuses under the dash for them. the ecm only applies ground to them.
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Old Mar 28, 2012 | 05:58 PM
  #6  
system155's Avatar
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From: Las Vegas
Car: 89 camaro iroc, 89 camaro rs
Engine: 350-iroc / 305 rs
Transmission: 700r4 / t5
Re: Injector nightmare

Originally Posted by tunedperformanc
I think 89 in tbi was the first year of vats, that would disable the injector pulse.
No I already bypassed that when I first got the car
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Old Mar 28, 2012 | 05:59 PM
  #7  
system155's Avatar
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From: Las Vegas
Car: 89 camaro iroc, 89 camaro rs
Engine: 350-iroc / 305 rs
Transmission: 700r4 / t5
Re: Injector nightmare

Yeah I got power the there just not pulsing
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Old Mar 28, 2012 | 06:16 PM
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Re: Injector nightmare

the the ecm is not seeing rpm or a spark while the engine is turning over.
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Old Mar 28, 2012 | 07:15 PM
  #9  
system155's Avatar
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From: Las Vegas
Car: 89 camaro iroc, 89 camaro rs
Engine: 350-iroc / 305 rs
Transmission: 700r4 / t5
Re: Injector nightmare

how would you go about checking that??
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Old Apr 1, 2012 | 08:13 PM
  #10  
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Re: Injector nightmare

Originally Posted by system155
I changed ingenious model and the ecu
First Guess: Not ingenious enough.




Doesn't HAVE to be a wiring/computer problem.

I swapped throttle bodies on my pickup in the process of diagnosing a Code 44. The replacement throttle body only sprayed fuel from one injector. Had power to both.

Turned out that the fuel injector was stuck. Ran the engine a few minutes longer, and it began to spray. Has worked fine ever since.

I'd consider tapping on the injector housings in the (probably futile) hope that they're varnished up.
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Old Apr 20, 2012 | 05:45 PM
  #11  
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From: St. Petersburg, FL
Car: 88 Camaro
Engine: 305 TBI
Transmission: 700-R4
Axle/Gears: 2.73
Re: Injector nightmare

Could very well be the ignition control module again, Don't trust just one part from places like auto zone, try another! I went through 4 one time to get a good one
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