Engine/Transmission (1998.5 - 2002) Lift pump failures in high temperatures

[Shelby Griggs]

I know there has been a ton of lift pump threads, but wanted to specifically know if there is a higher failure rate in hot climates. I have 85K on my 2001. 5 and am on the second lift pump, having been replaced at 63K.



I just got home from about a 3K trip to Palm Springs, CA where the daily temperatures were over 100° F every day. On more than one occasion, the lift pump would quit and I would have 0 or or a negative FP. The lift pump worked fine on the return trip, BUT temperatures were more on the order of 80° or less, all the down into the high 20's this morning.



Do folks that live in the Southern US in hotter climates see this correlation with failed LP's and the heat?



Shelby

 

[klenger]

Someone here was suggesting that it may be cold temperatures that cause them to fail because the fuel is thicker.



FWIW, I'm still on my original after 32,000.

 

[jrobinson2]

Mines still original at 100250 miles, summers are kinda mild here, probably less than 3 months over 110* and only a few weeks over 115*

Jared

 

[Mad Bomber]

Lift pump

I lost my 1st one at 36. 6K. Yes the 1st freeze of the year is when it happened.

 

[CumminsPuller]

I am down here in Louisiana... ..... I have only had to replace mine once. I am at 198,950 miles now.



Jason

 

[azpete]

It's been another long hot summer and last month the idle pressure changed from 16 to 8. But unlike everyone else on acceleration pressure goes back up to 14. Took 3 weeks to order new one and am about ready to replace.



Original pump and has 40000 mi.