location of fuel injector ground???
04-06-2009, 02:48 PM
#1
Supreme Member
Thread Starter
iTrader: (7)
Join Date: Jan 2006
Location: Santa Rosa, Cali
Posts: 1,160
Likes: 0
Received 1 Like
on
1 Post
Car: 1988 IROC 5.7 Money Pit
Engine: (being built; modified TPI ZZ4
Transmission: 2200 stall/ stage 3 700R4
Axle/Gears: freshened 3.27 in 9.bolt/
location of fuel injector ground???
I want to test my injectors as part of a flooding issue. I can't seem to locate the ground to test for ohms. Where and What am I looking for? (I did do a 'Search') Thanx, Nitro-Nicky
04-06-2009, 04:43 PM
#2
Supreme Member
Join Date: Jul 2005
Location: North Central Mass.
Posts: 2,123
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1985 Berlinetta
Engine: Megasquirted TPI
Transmission: Transgo 700R4
Axle/Gears: 3.42
Re: location of fuel injector ground???
One side of the fuel injector is wired to a fused hot source. The other is hooked directly to the ECM, which switches ground to activate the injectors.
To test the injector, take the connector off and test the resistance between the two terminals directly on the injector.
To test the injector, take the connector off and test the resistance between the two terminals directly on the injector.
04-07-2009, 08:07 AM
#3
Supreme Member
Thread Starter
iTrader: (7)
Join Date: Jan 2006
Location: Santa Rosa, Cali
Posts: 1,160
Likes: 0
Received 1 Like
on
1 Post
Car: 1988 IROC 5.7 Money Pit
Engine: (being built; modified TPI ZZ4
Transmission: 2200 stall/ stage 3 700R4
Axle/Gears: freshened 3.27 in 9.bolt/
Re: location of fuel injector ground???
Thanks for the info prompt. These are new balanced 24#'ers and apparently if I want to see if they are staying on to long (for the over rich fuel condition) in the duty cycle, I'll need to verify the resistance at the fuel rail. Apparently the ECM fires a bank of 4 injectors each cycle and all 8 plugs of mine have little pools of raw fuel in them. Additionally, I'm not having much success in prompting my ALDL cable connection to check on the issue with a scanner. Nitro-Nicky
04-07-2009, 03:17 PM
#4
Senior Member
iTrader: (1)
Join Date: Jul 2007
Location: MA
Posts: 1,141
Likes: 0
Received 2 Likes
on
2 Posts
Car: '87 IROC/'68 SS
Engine: 5.7L/350
Transmission: 700R4/Muncie 4-spd
Axle/Gears: 3.27 9 bolt / 3.31 12 bolt
Re: location of fuel injector ground???
Thanks for the info prompt. These are new balanced 24#'ers and apparently if I want to see if they are staying on to long (for the over rich fuel condition) in the duty cycle, I'll need to verify the resistance at the fuel rail. Apparently the ECM fires a bank of 4 injectors each cycle and all 8 plugs of mine have little pools of raw fuel in them. Additionally, I'm not having much success in prompting my ALDL cable connection to check on the issue with a scanner. Nitro-Nicky
As for the ALDL, try to clean and tighten the grounds on the back of the passenger side head.
Thread
Thread Starter
Forum
Replies
Last Post
Firechicken86
Engine/Drivetrain/Suspension Parts for Sale
0
08-12-2015 10:07 PM
