i have a 94 xj12 6.0L and i want to know where the fuel pump relay is what color and and about how big it is unless some one has a picture of one thank for the help

 

I think you are in the wrong forum, this is for xj40 (xj6). but if it helps the relay on 93 94 xj40 is located in the right side trunk behind the carpet on the wall nearest the rear lights.

 

Here's a page that gives the locations of the fuel pump relays for your XJ12. Pump 2 relay is part of a 4-relay enclosure, not replaceable separately.

Cheers,

 

Nope, he is in the correct forum . These cars are called XJ81 if I remember correctly but generally they are XJ40s too

 

my car doesn't like to start very easy after it warms up it just spudders than and dies after a few times it will kick on and runs fine i switch a/c relay with the fuel pump1 relay do you think maybe both relays are going bad? cause it still dose the same thing after the first start when its warm

 

Are they the blue hella relays? Did the A/C work before you took the relay out? The blue hella's are prone to damage and Jag came out with a sealed relay that works much better. You can "short" the relay by using a wire to see if it's the relay or not.

 

witch prongs do you use ?

 

To fire up the controlled item, jumper the terminals that form a "T", but not with the one in the middle if there is one there, the two outside terminals.

Cheers,

 

ok so i got the new fuel relay and it still dosen't want to start right way after its warmed up but it dose after like 7 trys i guess the pump isn't kicking on but if i use the wire to cross the prongs it will kick the pump on right away and drive tell i stop and un hook it the wire is there a part that kick relay on and off that i can buy ?? or is there some thing that needs to be cleaned ??

 

and on the vmc read out it say fuel fail 44 is the o2 sensor causing my problem ???one last thing the check engine light is not on

 

https://www.jaguarforums.com/forum/x...p-please-5757/

 

Try changing the 02 sensor heat relay third one from the left on your firewall and also check gas cap to see if it's sealing off the fuel. I just finished doing both and she starts right up !! just move your ac clutch relay over to heat sensor see if that works before you buy a new one

 

thanks i just read that in the post i have above and so far no problems thanks for the reply

 

does that mean you solved the problem with the relay?

 

yup, it was the o2 heater sensor relay like you said , now it starts every time first try ,
thanks for the help
one thing I've learned form working on this car, is even if it seems like a really big problem that's gonna cost a lot of money , do a lot of research first i saved so much money cause the problems where smaller than i thought at first , like a relay, and not a fuel pump or when i had a burn't coil and all signed lend me to think i had burn't valves but it was only a coil .
research can save money and time if or going back to fix the same problem more than once

 

Way to go Tipn22.......

I've been under the weather a few days, haven't been payin' attention. If I were you, I'd replace ALL those relays at the firewall. They cause more problems than you can shake a stick at. Be safe, junk 'em all.

Cheers,

 

lol, ok i planed on it but i should probably do it sooner than i was planing ,ok maybe i wasn't planning just waiting for the next one to go out lol

 

This is correct... The 93/94 XJ12 is an XJ40 body with the V12 called the XJ81, but usually refered to just as XJ40. It was limited production (to my understanding around 1600 built) so engine/trans specific info on them is more dificult to find, but body info & parts are the same as the XJ6.