no power to the injectors on a tbi
no power to the injectors on a tbi
whats going,fellow camaro drivers,here i am again seeking some answers for another problem i am having with a 92 305 with TBI,i have replaced the computer,and i replace the dis, and i rebuild the TBI,now my problem now is im not getting any power the injectors,the fuel pump is pumping,and when sprayed derect into the TBI she starts.what could be stopping the powere to the injectors.any thoughts about this would be greatly appricted
Member
Joined: Nov 2007
Posts: 164
Likes: 0
From: salisbury NC
Car: 1992 RS
Engine: 305
Transmission: 700r
Re: no power to the injectors on a tbi
have you checked the fuse and made sure the injectors or plugged up good? if so id start by testing with a test light or volt meter and see if you have power to the injectors and if you do check the resistance on the injectors with a ohm meter and make sure they are good
Re: no power to the injectors on a tbi
all the fuses are good the injectors are good,their is no pluse going to the injectors from the plugs,,i was just reading about the chip in the key being bad,which is call a vats,what does vats stands for,as i was saying as long as i was spraying into the TBI she will run,after reading that about the vats i was wondering,could that be the problem
Moderator

Joined: Jul 1999
Posts: 17,263
Likes: 168
From: 51°N 114°W, 3500'
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
Re: no power to the injectors on a tbi
Voltage to the injectors is constant. The ground connection is pulsed by the ECM to fire the injectors. Trace why there's no power to the injectors from the power source.
Injector power wires are the red wire on one and the white wire on the other. Both wires go to INJ1 fuse.
Injector power wires are the red wire on one and the white wire on the other. Both wires go to INJ1 fuse.
Member
Joined: Nov 2007
Posts: 164
Likes: 0
From: salisbury NC
Car: 1992 RS
Engine: 305
Transmission: 700r
Re: no power to the injectors on a tbi
vats is vechile anti theft system. If vats is the problem car shouldnt even crank I dont think thats your problem The chip on the key is a resistor. I would trace my injector wires down and make sure you dont have a short or broken wire what kind of ohm reading did you get on the injectors
Senior Member
Joined: Jun 2007
Posts: 600
Likes: 0
From: Akron, Ohio
Car: 87 Suburban 2500
Engine: 455 Wildcat ( somewhat modified ))
Transmission: TH400 ( for now )
Axle/Gears: 4.10 ( for now )
Re: no power to the injectors on a tbi
True.
Not true. ( hard knocks )
VATS prevents the injectors from firing. Everything else works, just no fuel.
Still got your old computer ? I'd try that as a first step, unless you know it was trashed.
VATS prevents the injectors from firing. Everything else works, just no fuel.
Still got your old computer ? I'd try that as a first step, unless you know it was trashed.
Moderator

Joined: Jul 1999
Posts: 17,263
Likes: 168
From: 51°N 114°W, 3500'
Car: 87 IROC L98
Engine: 588 Alcohol BBC
Transmission: Powerglide
Axle/Gears: Ford 9"/31 spline spool/4.86
Re: no power to the injectors on a tbi
See if there's any power on both sides of the fuse. If there's no power to the fuse then the circuit from the fuse to the injectors should be fine. I'd guess and say the ECM provides the fuse power based on the VATS.
Trending Topics
Joined: Sep 2007
Posts: 2,179
Likes: 1
From: Port Orchard,WA
Car: 89 Camaro RS
Engine: 355 SD TPI
Transmission: WCT5
Axle/Gears: 3.08 Posi
Re: no power to the injectors on a tbi
thats true but it also shuts down the injectors so if you did find a way to get around the starter shutting down it has a second defense
Thread
Thread Starter
Forum
Replies
Last Post






