Replaced pump, now relay isn't getting power????
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Joined: Oct 2006
Posts: 259
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From: Long Island, NY
Car: 1987 IROC-Z
Engine: 350 TPI
Transmission: 700r4
Axle/Gears: 3.23
Replaced pump, now relay isn't getting power????
The fuel pump relay is no longer getting any power and I have no idea why?
Here is my previous thread that talked about my fuel pump issue:
https://www.thirdgen.org/forums/tech...wont-turn.html
After confirming the pump was bad, I have since swapped it out to find my fuel pump relay is no longer getting any power to it? It started before I swapped the pump when I was still diagnosing the problem (b/c I was very hesitant to swap a new pump if I didn't have to do it), the relay would click on but then one day it just wouldn't anymore so I figured the relay went to. No big deal I bought a relay when I got the pump and figured it would be better to have a new one in there any way.
Now after swapping the pump and hooking up the new relay, this relay won't click over! WTF!?! Now I did something I should of done in the first place and tested the relay to find they both worked fine (new one and old one).
Pump is working fine when I send a straight 12v to it and I can turn the car on when I connect it to the fuel pump plug terminals tan/white wire to the relay but it will start and turn rite off unless I keep throttling it and it runs real choppy. After, I connected a switched hot sourse to the orange wire of the relay plug and connected the relay to it and I heard it click and with that it would start up and hold its own idle, but it did still sound alittle choppy, as in if I rev it alittle it will pop when the rpms drop back down.
So my problem is why would the orange wire not being supplying any power? I read that it draws its power from the ecm? Is that the problem? It was replaced a couple years ago already so I wouldn't have suspected it to go again. Or maybe the inline fuse? the electrical diagram showed it went to one, but I could not find where it was on my car to check, besides checking all the fuses in the fucse block that is.
Another problem I just noticed was my temp gauge is pinned and doesn't move from that spot at all way above the 260 mark, would this relate to the problem at all?
I would appreciate any advice greatly.
Thanks John
Here is my previous thread that talked about my fuel pump issue:
https://www.thirdgen.org/forums/tech...wont-turn.html
After confirming the pump was bad, I have since swapped it out to find my fuel pump relay is no longer getting any power to it? It started before I swapped the pump when I was still diagnosing the problem (b/c I was very hesitant to swap a new pump if I didn't have to do it), the relay would click on but then one day it just wouldn't anymore so I figured the relay went to. No big deal I bought a relay when I got the pump and figured it would be better to have a new one in there any way.
Now after swapping the pump and hooking up the new relay, this relay won't click over! WTF!?! Now I did something I should of done in the first place and tested the relay to find they both worked fine (new one and old one).
Pump is working fine when I send a straight 12v to it and I can turn the car on when I connect it to the fuel pump plug terminals tan/white wire to the relay but it will start and turn rite off unless I keep throttling it and it runs real choppy. After, I connected a switched hot sourse to the orange wire of the relay plug and connected the relay to it and I heard it click and with that it would start up and hold its own idle, but it did still sound alittle choppy, as in if I rev it alittle it will pop when the rpms drop back down.
So my problem is why would the orange wire not being supplying any power? I read that it draws its power from the ecm? Is that the problem? It was replaced a couple years ago already so I wouldn't have suspected it to go again. Or maybe the inline fuse? the electrical diagram showed it went to one, but I could not find where it was on my car to check, besides checking all the fuses in the fucse block that is.
Another problem I just noticed was my temp gauge is pinned and doesn't move from that spot at all way above the 260 mark, would this relate to the problem at all?
I would appreciate any advice greatly.
Thanks John
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Joined: Dec 2006
Posts: 5
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Re: Replaced pump, now relay isn't getting power????
I am not sure about your temp gauge issue and if it is related or not.
I believe you should have a fuse bolted to the body right by your battery.
It is contained in a little black weatherproof housing. Undo the clip and check that fuse. If it is blown, that is your problem. The orange wire gets it's power through that fuse. I hope that helps.
I believe you should have a fuse bolted to the body right by your battery.
It is contained in a little black weatherproof housing. Undo the clip and check that fuse. If it is blown, that is your problem. The orange wire gets it's power through that fuse. I hope that helps.
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