Stalling after 30 sec
Thread Starter
Intermediate
Joined: Feb 2005
Posts: 37
Likes: 0
From: Long Island ny
Stalling after 30 sec
Hey guys, 91 vette 5.7-recently put in a fuel pump...then car ran good for 1 day, than ran *tty for a day, then it got worse... she only starts for 30 sec's then stops....if i give it gas it hesitates then gives a lil punch then turns off. I changed the cap n rotor, checked the air filter...bled the fuel nozzle. could it be pcv? throttle body sensor? dare i say ...computer?...my problem is..no mechanics around here want to work on a vette, they say send it to a dealer. any suggestions on what it is? if not...any "Reputable" vette shops in long island?
thanx'
thanx'
Thread Starter
Intermediate
Joined: Feb 2005
Posts: 37
Likes: 0
From: Long Island ny
how would i check the fuel pressure? and where is the fuel filter in this 91 conv?
thanx for the quick response
anyone else with suggestions-remedies?
thanx for the quick response
anyone else with suggestions-remedies?
Last edited by Top91Less; Jul 25, 2005 at 08:08 PM.
Le Mans Master
Joined: Dec 2000
Posts: 7,839
Likes: 22
From: San Diego, Ca
Fuel filter is on the right frame rail towards the front. Relieve pressure at the fuel rail on the right side of the engine or pull the fuel pump fuse and try to see if it will run long enough to drain the line. Remove the gas gap and jack it up so that you can get underneath it to remove the filter. Once off, and if you have a compressor, blow some air through the main line - you'll have to disconnect it at the fuel pump - blow air in the direction of the engine. Once the new pump is installed, replace the fuse and disconnect the inlet at the fuel rail. Clamp a hose to it and place the other end in a coffee can. Turn on the key and let it squirt out a pint - you may have to turn the key off and back on to get it flushed. Hook the main line back up to the rail. Turn the key and let the pump run for 2 seconds. Turn it off and then start it. Don't forget to put the gas cap back on.
Cruising
Joined: Jul 2005
Posts: 11
Likes: 0
From: Montlcair NJ
hi, i had about the exact same situation with my 85, had some issues, changed the fuel pump, car ran like brand new. second day, ditto. i changed the fuel filter along with the pump, so that wasn't an issue. i ended up changing the IAC and cleaning the MAF. problem has not happened since.
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
The Idle Air Control (IAC) is located under the TB, with the electrical connector on the right side.
Your '91 is SD and uses only a MAP sensor located on the right rear of the plenum; it does not have a MAF.
Your '91 is SD and uses only a MAP sensor located on the right rear of the plenum; it does not have a MAF.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Race Director
Joined: Jan 2004
Posts: 18,727
Likes: 711
From: Bergen County, NJ
Originally Posted by Top91Less
what is the iac? and what is and how do i clean the MAF?
Its located at the side of the throttle body[on my '88].
Race Director
Joined: Aug 2000
Posts: 14,130
Likes: 7
Cruise-In II Veteran
You can try the Vette Doctors in LI or go to this site and see who does the Vettes.
http://www5.hamptons.com/licorvette/localidx.htm
http://www5.hamptons.com/licorvette/localidx.htm