Archived FASS pump issue?

[Steve Robinson]

Tried to go on vacation this morning. Got 100 miles out and I noticed my fuel gauge acting erratic. The gauge would show 18 psi the drop to 0 psi or be somewhere in between. I have a FASS replacement pump because the old Carter pumps failed consistently.

My truck is a stock 1998. 5, 24 valve, 2500, 4X4, manual. Westach fuel pressure gauge with the sending unit threaded into the top of the fuel filter canister.

As everyone knows, without sufficient fuel volume, the Bosche injection pumps of the era, would over heat and fry the electronics, or because of the lack of lubricity, ruin the gears as well. Ive replaced more Carter pumps and broken injection pumps. than I am comfortable talking about. It's darned expensive!

Has anyone had the erratic fuel pressure issue Ive described, with a FASS pump?

I'm having my truck and travel trailer towed back to my home.

 

[DavidC]

Maybe you need a Walbro like some guys on this forum have and really like. There was a recent thread with a link to a ebay site.

Dave

 

[DavidC]

Link if your interested. Post # 7
http://www.ebay.com/itm/22052316000...em=&sspagename=ADME:X:AAQ:MOTORS:1123&vxp=mtr
https://www.turbodieselregister.com...of-Air-Dog-Raptor-Lift-Pumps&highlight=walbro

Dave

 

[cerberusiam]

Check your gauge first then suspect the pump. Its an electric pump and can have issues like any of them. If you have an electic gauge with
the sending unit on the engine that is just as likely your problem. Need an isolator or the vibes will kill the senders.

If you sent in the warranty card FASS has been good about replacing the problem ones, if you have warranty left.

 

[BigPapa]

Are you running an isolator?

 

[klcammie]

Check your gauge first then suspect the pump. Its an electric pump and can have issues like any of them. If you have an electic gauge with
the sending unit on the engine that is just as likely your problem. Need an isolator or the vibes will kill the senders.

If you sent in the warranty card FASS has been good about replacing the problem ones, if you have warranty left.

I agree check gauge and sending unit. I had two sending units go bad. finally moved moved sending unit to fender well no more problem. The FASS I got came with a four year warrenty, one of the reasons for getting it.

 

[CKelley1]

not a isolator but a snubber. carter just came out with a brushless pump.

 

[Troubleshooter]

The gauge would show 18 psi the drop to 0 psi or be somewhere in between. <snip> Has anyone had the erratic fuel pressure issue Ive described, with a FASS pump?

I had something similar about a year ago; FASS quit. The shop to which the truck was towed, told me that they were able to get the FASS working briefly, but it quit as it heated up. They ended up replacing the old FASS DDRP with a new FASS-95. The new one has been working well for the past year.

 

[Steve Robinson]

I looked at them Dave. You might be right.
I spoke with my mechanic this morning, the Fass pump failure also took my injection pump with it.

 

[Steve Robinson]

Thanks for the reply. Gauge and sender seem fine. I replaced the sender as a precaution. Sender is mounted to fuel filter canister.

I spoke to my mechanic this morning, seems like the DDRP failure took my injection pump with it. If I'm counting correctly, injection pump 5 is about to be installed. 180K miles on 98. 5 truck. Please see "911" in discussion Forum for more info. Thanks again, Steve

 

[Steve Robinson]

Thank you Troubleshooter. I was on the phone this morning with a couple of different Fass dealers who are telling me the DDRP pumps are crap and will fail in a very few years, and they do not recommend them. Looks like yours and mine certainly did fail, mine took the injection pump with it. Fass warranty does nothing to replace the injection pump, and I may not want another Fass pump in my truck if it's going to do the same crap the stock Carter pumps do/did. Thanks again, Steve

 

[Joseph Donnelly]

I have the electric sending unit on the replacement steel fuel filter cap that Geno's sells. One time, the wires got loose because the nuts didn't stay tight.

 

[JR]

Where are you buying your injection pumps from? Some companies are still bench testing the old ecu on the core vp's when they are being rebuilt and if they pass the bench test then you are getting someone else's used electronics with unkown mileage. Be sure to ask questions on what they replace when they reman a pump, a NEW computer is one of the most important components on buying a reman vp as they are one of the most common failures.



Remember, cheaper is not always better!

 

[Steve Robinson]

This pump is from Blue Chip Diesel.