Fuel Pressure Problems
Thread Starter
Instructor
Joined: Mar 2003
Posts: 131
Likes: 0
From: Bath PA
Fuel Pressure Problems
I installed two different high pressure fuels pumps. Both have be shutting down during normal operation. When I am cruising at low RPMs. I have a fuel pressure gauge that monitors pressure off the fuel rails. It goes to Zero, the car stalls. Sometime I leave it in gear and it will fire up and run for another hour. Once I shut it off, went to cut the grass and came back and it would not start. Pushed it in the garage and the D#$% thing started the next morning. Once the cars heats up I have noticed a drop in fuel pressure. The first pump was a Racetronix and the second was an LPE.
My guesses are bad ground and/or possible bad fuel pressure regulator.
My guesses are bad ground and/or possible bad fuel pressure regulator.
Melting Slicks
Joined: Dec 2002
Posts: 2,480
Likes: 62
From: Middletown DE
Did you install the upgraded Racetronixs wiring kit?
If so - maybe try replacing the fuse and the relay... also try changing the fuse for the stock fuel pump located under the hood's fuse compartment.
I have my wiring grounded to the relay itself...the bolt it is connected to., if it was ground - it shouldnt work at all.
The filter/regulator is only $50, so it may be worth changing if all else fails.
If so - maybe try replacing the fuse and the relay... also try changing the fuse for the stock fuel pump located under the hood's fuse compartment.
I have my wiring grounded to the relay itself...the bolt it is connected to., if it was ground - it shouldnt work at all.
The filter/regulator is only $50, so it may be worth changing if all else fails.
Safety Car
Joined: Mar 2001
Posts: 3,567
Likes: 0
From: Aurora IL
Well it can be pressure tested to determine its flow. It can be flow tested to determine the same thing, it requires that you leave the garage and beer behind and go to a shop. The other thing you can do is see how long it has been in use and replace it if use if excessive. If the filter is blocked is can burn up a pump and allow no gas through. Just a thought on a weak point in the system, but since you have all the answers do not even consider it.
Pro
Joined: May 2004
Posts: 673
Likes: 1
From: Pembroke Pines Florida
Originally Posted by CAPN17
Well it can be pressure tested to determine its flow. It can be flow tested to determine the same thing, it requires that you leave the garage and beer behind and go to a shop. The other thing you can do is see how long it has been in use and replace it if use if excessive. If the filter is blocked is can burn up a pump and allow no gas through. Just a thought on a weak point in the system, but since you have all the answers do not even consider it.
Oh and BTW, I don't drink beer and I do my own work in my garage.
What is your problem..jeez..?
Scott
Last edited by Rattler71; Jul 31, 2004 at 03:56 PM.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
2027 Corvette vs The World: Every Model vs Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
2027 Corvette Buyer's Guide: Everything You Need to Know!
Joe Kucinski
10 Things C8 Corvette Owners Hate (But Won't Tell You)
Joe Kucinski
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!
Brett Foote
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)
Joe Kucinski
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!
Michael S. Palmer
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!
Joe Kucinski
Thread Starter
Instructor
Joined: Mar 2003
Posts: 131
Likes: 0
From: Bath PA
Guys, I replaced the fuel filter when the first gas pump gave me problems. That was my first guess. The problems continued. I did not install the upgraded wiring system. I will check that out.
First I am going to try the fuel pressure regulator. I now have 50K + on my car. Love driving this thing. Typically happens at 1500-2100 RPMS. Does not seem to happen at 3100 + RPMs
First I am going to try the fuel pressure regulator. I now have 50K + on my car. Love driving this thing. Typically happens at 1500-2100 RPMS. Does not seem to happen at 3100 + RPMs
