Flyfisher
NAXJA Forum User
- Location
- Billings, Montana
OK....'89 XJ with 4.0L, Auto, 242. Quit on accelleration three times in a row two weeks ago. Fine for a week, then did it once again. Thinking TPS, I replaced it...seemed fine for a week. Then did it again, this time for good...wouldn't re-start. Towed it home. Since I couldn't hear the fuel pump run when initially turning the key, I figured the fuel pump had finally given up (only 254,000 miles!). Got a new pump from NAPA...not an exact fit, but with some modifications to mounting rubber, got it mounted up just fine. Installed and no start. Listened...not hearing pump running. Tested power to connector closest to pump/gauge sending unit. Found two outside plugs had continuity to ground and voltage betweeen center terminal and either outside terminal was 6.8v.
At this point, I hooked 12v to my old pump to hear it run just fine!!! So, guess it wasn't a pump problem after all! So, I come in for the night and search here. After search, I figure it's the relay or maybe the ceramic resister. Change resisters around to no avail. Short the resister with a jumper wire and hear the pump running when I turn the key. Only problem is that I still have no fuel pressure...doesn't even pump it from the tank if I remove the hose at the tank!!! (I don't think I have the return and supply hoses mixed up since they're different sizes).
Does the pump need to be primed or something? I think I figured out the ceramic resister block is bad...but, still no pressure, even when hearing the pump run for 3 seconds after key turned.
Any help is appreciated...and thanks in advance!!! This is my daily driver...and I can't use the company car for ever!!!
At this point, I hooked 12v to my old pump to hear it run just fine!!! So, guess it wasn't a pump problem after all! So, I come in for the night and search here. After search, I figure it's the relay or maybe the ceramic resister. Change resisters around to no avail. Short the resister with a jumper wire and hear the pump running when I turn the key. Only problem is that I still have no fuel pressure...doesn't even pump it from the tank if I remove the hose at the tank!!! (I don't think I have the return and supply hoses mixed up since they're different sizes).
Does the pump need to be primed or something? I think I figured out the ceramic resister block is bad...but, still no pressure, even when hearing the pump run for 3 seconds after key turned.
Any help is appreciated...and thanks in advance!!! This is my daily driver...and I can't use the company car for ever!!!