Replaced fuel pump and now gage is inop

**TRANSWORLD43** · 02-14-2015, 10:07 AM

I have a 98 ws6 that i replaced the fuel pump on with a new gm pump. After installing it my gage quit working. I took it back out and manually moved the float and still nothing. I got another new pumpasm and hooked it up and same thing. Anyone ever heard of this or can give me any ideas? Thanks tom

***SMWS6TA*** · 02-14-2015, 10:11 AM

did you reconnect the wire harness? there are 2 IIRC.

**TRANSWORLD43** · 02-15-2015, 09:36 AM

Think i have it narrowed down to 2 bad modules. Hooked up the old pump and gage work perfect. Gonna get a new one on tuesday and try it again. Thanks

***SMWS6TA*** · 02-15-2015, 10:51 AM

That sucks when you get "new" stuff it doesn't work....

**pajeff02** · 02-18-2015, 02:58 AM

Agreed. Very frustrating. Let us know if this fixes it.

**jb3golf** · 02-18-2015, 09:22 PM

Please be sure to keep us updated on this issue....my 98 Forged 347's fuel Guage has stopped working for a while now and won't change regardless of what module I install. .thanks

**cammed goat** · 02-21-2015, 11:10 AM

"New" stuff and it either doesn't work, or you need another part to GO with the "new" stuff. Know the feeling.

**jb3golf** · 02-21-2015, 02:38 PM

Originally Posted by TRANSWORLD43

Think i have it narrowed down to 2 bad modules. Hooked up the old pump and gage work perfect. Gonna get a new one on tuesday and try it again. Thanks

Actually, it's interesting that we both have the entry year of the LS1 F-body (98') and I'm noticing how more and more of my gauges and little electric gremlins keep popping up...almost 20 years old our cars are! Lol...heck their from the last Century! Lol...

**jb3golf** · 02-21-2015, 02:41 PM

Originally Posted by cammed goat

"New" stuff and it either doesn't work, or you need another part to GO with the "new" stuff. Know the feeling.

Very true cammed goat! Nice GTO by the way! What color is it? It looks like a dark metallic gray? Very nice. ...

**pajeff02** · 02-22-2015, 05:40 AM

I would pop the connector back by the tank, locate the sender wires, and then check the ohm reading to see if you have a legitimate reading or if the circuit is open.

**Pete Rock98** · 02-22-2015, 09:56 PM

Originally Posted by TRANSWORLD43

Think i have it narrowed down to 2 bad modules. Hooked up the old pump and gage work perfect. Gonna get a new one on tuesday and try it again. Thanks

Install the old fuel sender onto the new pump just take your time doing it.Did you drop the tank or do the trap door method?

**RONS98TA** · 02-23-2015, 03:49 AM

I have a 98 TA and replaced my pump with a Racetronics 255lph. Didnt have any issues at all. I did the "trap door" mod though. Just incase I need to access it again it will only be a 20 min job!!

**pajeff02** · 02-23-2015, 05:16 AM

Although I swore I would never cut a hole in our car, when it came time to replace the fuel pump I also went with the trap door. I'm glad I did as I then had some issues with the fuel pressure regulator after the fact and ended up pulling the pump 4-5 more times to get it all straightened out.

**Pete Rock98** · 02-23-2015, 01:31 PM

What happens there are little fingers on the sender and the 98 have a metal tank with baffels inside you have to install the pump just at the right angle or the float hits the side and damages the sender.