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5.9L fuel pump replacement - Bosch vs. Delphi vs. Walbro?

8.1K views 12 replies 9 participants last post by  Taz360ZJ  
#1 ·
So, I am pretty sure my fuel pump is done.

Parked (on an incline) after long roadtrip and car would not start a few days later (only cranking). Checked fuel rail pressure, and nada. Cycle ignition and still nothing. Fuel pump relay seem to be doing its job. Could not find any dedicated fuses for the pump (are there any?), so my only guess is that the sender unit is dead.

It makes sense, because the vehicle has 378k km on the clock and have always been somewhat slow to start (needs to crank a few seconds).

Question is, what pump should I get? I would never get a sup-par quality part for this replacement and see RockAuto have a few different options.

A complete fuel pump assembly from Bosch runs $155 (PN 67649) and the corresponding Delphi (PN FG1043) unit is $94. The Delphi pump alone is fifty bucks. Alternatively, I can get a Walbro 255 high(er) performance aftermarket unit for $70 (don't know the extent of modification needed or if it's feasible in terms of flow rates/specs).

Which option does this esteemed forum propose?
 
#9 ·
Everyone here are happy with bosch
Exept me....

Old pump died, replaced with a bosch, engine refused to idle untill it was warm and then it was very very low the tach almost did not move sometimes..
Replaced the bosch with a used factory one from a scrapped ZJ and since then no more idle problems at all, exept for 2 weeks after i replaced the bosch pump.
I guess the pcm just needed to relearn somethings before everything got normal again.

And as usual with my luck the warranty was out when i found out that i got a bad pump...
 
#11 ·
It should be 1 year from the mfg, Bosch, and Pierre had the only Bosch module I've ever seen fail on here.

If you do go the Bosch module route Rockauto has the best deal at $154 plus shipping for your niner and it comes with a new tank seal. RA discount code 4109787333701281 for 5% off which you enter in the "How did you hear about us?" box at checkout. This $7.70 off should cover a good portion of the shipping charges.

Description for the Bosch 67649 for the 98 5.9 with 12 month warranty listed at the bottom.

http://www.rockauto.com/en/moreinfo.php?pk=978065&cc=1315953&jsn=378