Engine/Transmission (1998.5 - 2002) New fuel pressure gauge - now lift pump

[brianMo]

The whole reason behind the monitoring fuel pressure was to keep me from biting the big one with a new IP. Put my westach gauge in Saturday morning. Was very dissappointed to see that I had 9 psi idle, and 1 psi WOT. But also relieve that I caught it before major damage. I hope! Called Napa to see if they had the Carter lift pump. They had one for $201. 00. I told him I could buy one off the internet for $129. 00. He came down to $125. 00.



Putting it on was a new experience. It is not located in a very friendly place. Also... I had a pin push in on the pigtail they gave me. Tryed pulling it out and it broke. Since they only had one in stock and I wanted my truck fix I cut the old connector off the bad one. Hated to put a crimp in circuit. This brought my pressures up to the following:



Idle - 13. 5-14. 0

Cruising - 12. 0

WOT - 8-9



I still think they are a little low. I have heard as long as there is positive pressure going to the IP your alright.



Next time I do this I think I am going to take the starter off. What a pain in the tail!



Brian

Missouri

 

[srenfro]

I put my new fuel pressure gauge on over the weekend. I started mine up and it read 13psi. Took it for a drive and it dropped to 2 psi and 0 psi under acceleration. Took it home re-bled the lines and started it up and it read 13 psi and held it. Took it for a drive and the pressure was juming from 14 to 0 to 10 to 5 back zero. Took it home shut it off, cranked it back up and 14 psi for about 5 seconds then to 2 psi.



I can only guess the lift pump is crapping out... again. :{

 

[HeavyHauler]

I'm in the same boat as you guys. I installed an FP gauge several weeks ago and I'm getting about 8. 5 at idle and it gets down to 5 under normal acceleration. I've had it down to 1 at WOT.



I've got an AirDog to replace everything so I'll try to get it on next week.

 

[jeepit]

For your reference I am stock and idle at 13-14, cruise 11, wot 8.