GP relay clicks but no heat. Need help

[bp m1009]

Last weekend my truck wouldnt start after sitting for a few days. I thought it was a fuel issue so i bought a FM100 style filterbase and installed it this weekend. I took the GPs out to crank the engine and while they were out i decided to test them. When i jump them to the battery they heat right up, but if i plug one in to the green gp wire and ground it turn my manual gp switch on the relay clicks but the plug does nothing no heat at all. Is this a bad gp relay? Even though it clicks, also the volt gauge doesnt drop either. I tried searching, because im sure this has been discussed but im on my phone and i need to get her running today to get home. Any input would be appreciated, thanks guys

 

[Warthog]

More that likely the GP relay is bad. They build up carbon on the contacts and will not allow currnet to flow.

 

[bp m1009]

By any chance do you know a part# for one?

 

[Warthog]

Napa St85 is the first one that comes to mind.

Advanced Auto S603

others are listed in the wiki and FAQ

 

[Hammer]

Last week I just pulled my stock one apart, flipped the contacts and disc around, put back together and it works just fine.
For now at least.

 

[Recovry4x4]

@ $8.50 a piece on a well known auction site, I bought spares.

 

[bp m1009]

well i ended up buying some solenoid for a ford that looked identical to my old one. The advance didnt have any of the S603 and i was desperate so i bought the ford one for $15. I hooked it up and it wouldnt give me a click when i use my GP switch, so i just ended up jumping the 2 terminals on the relay to heat the plugs and she started right up after about 10 seconds of cranking, this is also right after i installed a new FM100 filter unit. hopefully this stops my fuel problems! I guess ill check out egay for the right one. i just ordered a new GP card too from Antennaclimber so i should finally get my GP situation sorted.

 

[doghead]

You cannot use a "ford" starter relay. It will keep them on whenever the key is on. That will burn them out.

 

[MarcusOReallyus]

Hmmm.... Maybe some actual, you know, testing and troubleshooting would be a good idea sometime? Instead of just swapping parts?

It's a lot cheaper that way, and usually quicker, too.

 

[doghead]

He can't test, he only has a phone.

Does anyone have a Digital Multi-Meter app?

 

[swbradley1]

Don't you have one on your TV remote?

 

[bp m1009]

if i had a multi meter at the time i could have some trouble shooting, but i didnt. The Ford relay i bought does not keep the plugs on with key on, i checked with the plugs out to make sure, it only burns them if i jump the two terminals. Im sorry to everyone who is offended that i didnt troubleshoot it all day, but i was in a pinch with no electrical tools and limited time. The truck was in Baltimore and i needed to be up in Williamsport PA that night, thats a 200mi trip so i did what i had to do.

 

[cpf240]

Did you make sure that the ford relay is an isolated ground unit, as the correct relay is? If not, and it is wired the way it was supposed to be, your GEN 1 may be in danger, as this has caused failures before...

 

[bp m1009]

Did you make sure that the ford relay is an isolated ground unit, as the correct relay is? If not, and it is wired the way it was supposed to be, your GEN 1 may be in danger, as this has caused failures before...

I have no clue

 

[doghead]

While you were at autozone, http://www.autozone.com/autozone/accessories/Tools-Garage-and-Equipment/Multimeter/_/N-26lr

 

[MarcusOReallyus]

This one is waaaay too much money!


I keep one of that model in my glove box.

 

[bp m1009]

I have a multimeter already just not with me at the time. Im a cheap college student, so i wasnt going to buy something i already have.

 

[doghead]

This could have cost you a full set of GPs($80).

If you drive a cucv, you should keep a DMM in the truck.

 

[bp m1009]

I have 2 sets of GPs that i got with the truck. Maybe I'll invest in a cheap DMM to throw in the truck, along with a cheap set of some hand tools.