really need some help
Thread Starter
Junior Member
Joined: Apr 2012
Posts: 30
Likes: 0
really need some help
i have a 1988 IROC-Z
fuel pump gets extremely loud after driving on a hot day (louder than my pipes)
i replaced the fuel pump, sending unit, and filter.
two days ago i slapped an adhesive heatsheild between my pipes and the tank.
it definitively helped a lot. however, the fuel pump started to hum after driving for about 1-2 hours.
i know its a common problem and i was wondering if anyone has fixed it?
if so what did you do?
summers coming!!
fuel pump gets extremely loud after driving on a hot day (louder than my pipes)
i replaced the fuel pump, sending unit, and filter.
two days ago i slapped an adhesive heatsheild between my pipes and the tank.
it definitively helped a lot. however, the fuel pump started to hum after driving for about 1-2 hours.
i know its a common problem and i was wondering if anyone has fixed it?
if so what did you do?
summers coming!!
Member
Joined: Jul 2011
Posts: 232
Likes: 0
From: massachusets
Car: 87 z28 stock
Engine: 305 tpi
Transmission: 700r4
Re: really need some help
https://www.thirdgen.org/forums/tpi/...arding-12.html
here's some light reading. I dont have this issue. alot of folks believe its the gas getting hot before being returned to the gas tank. like with headers.
here's some light reading. I dont have this issue. alot of folks believe its the gas getting hot before being returned to the gas tank. like with headers.
Supreme Member
Joined: Apr 2010
Posts: 4,337
Likes: 29
From: Aurora, OR
Car: 87 IROC Z28
Engine: 355 cid TPI
Transmission: Custom Built 700R4 w/3,500 stall
Axle/Gears: QP fab 9" 3.70 Truetrac
Re: really need some help
Also, verify that your fuel pump is receiving a solid 12v with the engine running. Test between the large black wire(pin A) and the gray wire(pin C) of the 4 pin connector just above and in front of the tank, under the car. A poor connection in the power or ground circuit can stress the pump and cause it to struggle.