Fuel Pump / Electrical Issues
Thread Starter
Intermediate
Joined: Mar 2010
Posts: 48
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From: Palm Bay Florida
Fuel Pump / Electrical Issues
I went to look at the firewall relays that another post commented on. I checked the first and it seems fine. The one closer to the firewall, the relay is there and fine, however there is not connector for it that I can find. What does that one go to? I am not getting power to my fuel pump and that would explain why if that is the pump relay. Thanks.
Le Mans Master
Joined: Aug 2000
Posts: 8,838
Likes: 31
From: Australia
Year and trans always helps when asking questions
If two relays fitted, one is for the O/d
Did you try running 12V direct to the pump as outlined in the other thread to check the pump itself?
Have you checked pump fuse?
Is this a recent occurance as in did pump suddenly stop working?
If two relays fitted, one is for the O/d
Did you try running 12V direct to the pump as outlined in the other thread to check the pump itself?
Have you checked pump fuse?
Is this a recent occurance as in did pump suddenly stop working?
Team Owner
Joined: Jan 2003
Posts: 20,315
Likes: 245
From: Summerland B.C. Canada
I went to look at the firewall relays that another post commented on. I checked the first and it seems fine. The one closer to the firewall, the relay is there and fine, however there is not connector for it that I can find. What does that one go to? I am not getting power to my fuel pump and that would explain why if that is the pump relay. Thanks.
Thread Starter
Intermediate
Joined: Mar 2010
Posts: 48
Likes: 0
From: Palm Bay Florida
The car is an 84 with 4+3; The pump has not run since I got it. It does when I plug in 12V to it direct. The fuse for it is good. I am thinking that the harness missing is the cause of this. I will have to look further. The car will not run when I try to turn it on with 12V directly to the pump, I know fuel is getting to the injectors because I cracked a fitting there. I have already taken injectors out and inspected and replaced gaskets. I also know power is going to the probes on the injectors because I left one off to start it when I dumped fuel into the motor and it shot a lighting bolt across the engine. (oops) Is there a way to test the injector spray with the car off and just supplying power to them?
Le Mans Master
Joined: Aug 2000
Posts: 8,838
Likes: 31
From: Australia
One side of the injector plug is live all the time when the key on .
You need a " noid " light to see if the injectors are being pulsed by the computer when cranking; the injector circuit goes to ground at the computer ,turning the injectors off and on
You need a " noid " light to see if the injectors are being pulsed by the computer when cranking; the injector circuit goes to ground at the computer ,turning the injectors off and on
Thread Starter
Intermediate
Joined: Mar 2010
Posts: 48
Likes: 0
From: Palm Bay Florida
Now it starts and injectors that sat for a year fan the spray great, however the car bangs and clanks...any thoughts?
Team Owner
Joined: Jan 2003
Posts: 20,315
Likes: 245
From: Summerland B.C. Canada
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Thread Starter
Intermediate
Joined: Mar 2010
Posts: 48
Likes: 0
From: Palm Bay Florida
So you guess that the excess fuel is causing the noise?
I guess the ECM is the next place to look.