87 1500 Not Getting Power to TBI Injectors

• Aug 23, 2013

• #1

8

87 grey ghost

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Hi guys, first sorry not computer savvy at all.
I have an 87 gmc 1500 350 engine with the tbi. I'm not getting any electric to the fuel injectors I replaced the module under the
dist cap along with the rotor and cap. Any help will be greatly appreciated.
thank you

 

• Aug 23, 2013

• #2

MrMarty51

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LISTEN UP !!!! when You first turn the key to "run" position, do You hear the fuel pump running ??? that is very important first step in diagnosing problems with the fuel system.
If o fuel pump can be heard, check the fuses. ECM will be the ones.

Welcome to the forum.

 

• Aug 23, 2013

• #3

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no electric to injectors

mrmarty51 first thanks for the reply, I just bought the truck knowing it didnt run!
the guy has the fuel pump hot wired. i put a new gas tank on it along with a sending unit also a fuel filter and checked to make sure i have fuel to the tbi and i do have gas to the tbi. my friend metered the injectors for electric and i have none. all my fuses are good.
thanks

 

• Aug 23, 2013

• #4

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87 grey ghost

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newbie needs help

Hi Guys, I need some help!!! i have no electric at the fuel injectors. I've got gas to the injectors,and also checked all the fuses along with replacing the cap,rotor,& module under the distributor. 1987 gmc v1500 350 motor.
thanks as any thoughts would be great, I'm at a dead end

 

• Aug 24, 2013

• #5

Driver4r

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Does it run on either?

 

• Aug 24, 2013

• #6

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87 grey ghost

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newbie needs help

Yes it will run with either, carb clean or
gas down the carb. Thank you

 

• Aug 24, 2013

• #7

89Suburban

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Did you test with a light for power at the injectors on the red and white wires?

 

• Aug 24, 2013

• #8

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Yes no power

 

• Aug 24, 2013

• #9

89Suburban

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Then you are not getting power from the fuse panel. Check for power on BOTH sides of this fuse. If you have power on both side there is a break in the line somewhere. There is a splice in the harness above the pass side valve cover you can check. I am assuming your key is on performing these checks.

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• Aug 24, 2013

• #10

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87 grey ghost

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Yes the key is on and when I get home later
today ill check to see about both sides
of the fuse having power if not then ill
check for that splice. Thanks for the info
and I'll keep ya posted with my results.

 

• Aug 24, 2013

• #11

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87 grey ghost

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I tested the fuse box and got power to
one side of the fuse. Also in the upper
left hand corner of the fuse box is the ign with
a red wire and pink wire with a black tracer
do you know what there for? Because the
guy I got this truck off of has two of the pink
wires with tracers wired together and not
even going into the ign circuit at all. And I can't
see a red wire hanging anywhere around
my fuse box for the other side of the ign
circuit. Thank you

 

• Aug 24, 2013

• #12

89Suburban

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87 grey ghost said:

I tested the fuse box and got power to
one side of the fuse.

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• Aug 25, 2013

• #13

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? Do you think I need a new fuse box?

 

• Aug 25, 2013

• #14

89Suburban

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newbie needs help

Lets focus on one thing at a time. Forget the other wires for now. When you tested was the fuse in our out?


Posted From Hell

 

• Aug 25, 2013

• #15

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Out