TBI--power to injectors
Thread Starter
Junior Member
Joined: Nov 2007
Posts: 68
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From: Mobile,Al
Car: 88 Camaro
Engine: 305 TBI
Transmission: 700R4
TBI--power to injectors
If you are not seeing power to injectors what is the step by step process find the problem on a tbi with vats?
Supreme Member
Joined: Sep 2002
Posts: 9,192
Likes: 19
From: Cary, North Carolina
Car: 1992 RS
Engine: Carbed 350
Transmission: 700R4
Axle/Gears: 3.42 posi
Re: TBI--power to injectors
If the ignition circuit has not been changed, and the starter turns, then it should not be a VATS issue. Is this on the 1988? Because I thought VATS didn't start until 1989.
Thread Starter
Junior Member
Joined: Nov 2007
Posts: 68
Likes: 0
From: Mobile,Al
Car: 88 Camaro
Engine: 305 TBI
Transmission: 700R4
Re: TBI--power to injectors
Checked it and I am getting close to 12v on the "A" side of each injector harness, but nothing on the b side. What do I do now? And what would be the most likely cause of this?
Thread Starter
Junior Member
Joined: Nov 2007
Posts: 68
Likes: 0
From: Mobile,Al
Car: 88 Camaro
Engine: 305 TBI
Transmission: 700R4
Re: TBI--power to injectors
maybe it could be my ignition control module? I did recently drop my distributor in the driveway and it is severely rusted everywhere..gonna go to autozone tomorrow and get it tested..in the meantime, what else should I look for? Anything will help
Supreme Member
Joined: Jan 2006
Posts: 3,341
Likes: 10
From: Mooresville NC
Car: LOWERED ♦ CRIMSON METALFLAKE
Engine: ► 400 KUBES ◄
Transmission: 765R4
Axle/Gears: EATON POSI 4.56
Injection Perfection
Disconnect the 4 pin connector at the distributor.
Disconnect both injectors.
Connect a test light (the type for testing for voltage, not a continuity tester) across one of the injector connectors.
Put the key in the RUN position.
Using power thru a small light bulb, such as a side marker, probe the purple/white wire on and off with the probe.
Does the injector test light blink?
◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙
Happy Racing!
◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙
How bout those too scared to drive without headlights in the daytime
and the ones that need headlights for a little rain
.
Disconnect both injectors.
Connect a test light (the type for testing for voltage, not a continuity tester) across one of the injector connectors.
Put the key in the RUN position.
Using power thru a small light bulb, such as a side marker, probe the purple/white wire on and off with the probe.
Does the injector test light blink?
◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙
Happy Racing!
◙◙◙◙◙◙◙◙◙◙◙◙◙◙◙
How bout those too scared to drive without headlights in the daytime
and the ones that need headlights for a little rain.
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