Fuel pump ??????'s
Thread Starter
Burning Brakes
Joined: Feb 2000
Posts: 1,206
Likes: 0
From: USA USA
Cruise-In II Veteran
Fuel pump ??????'s
Drove vette yesterday and ran fine.Started it about an hour later
and it just cranked over for about 3-5 seconds and no start.
I shut it off ,tried again and it started. But now the idle is at 500-600
rpm. It seems like it is barely running and very muffled exhaust note.
It is a 6- speed,but it always had problems starting but never like
this. I have set the timing before according to the forum an dhad great
results.When driving it and i mashthe go pedal,it accelerates like a
bat outta hell. I grounded A&B terminals and got NO codes.
The idle before this was in between 700-800rpm.
Does this sound like a fuel pump on it's way out??
Give me some ideas i want to drive it,but don't need stranded either!!!
Thanks,
Matt
and it just cranked over for about 3-5 seconds and no start.
I shut it off ,tried again and it started. But now the idle is at 500-600
rpm. It seems like it is barely running and very muffled exhaust note.
It is a 6- speed,but it always had problems starting but never like
this. I have set the timing before according to the forum an dhad great
results.When driving it and i mashthe go pedal,it accelerates like a
bat outta hell. I grounded A&B terminals and got NO codes.
The idle before this was in between 700-800rpm.
Does this sound like a fuel pump on it's way out??
Give me some ideas i want to drive it,but don't need stranded either!!!
Thanks,
Matt
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Re: Fuel pump ??????'s (6spd.89)
First check FP at the fuel rail.
Before you replace the FP , pull that assembly and clean the contacts as they come through the mounting flange, see C4 tech tips.
Before you replace the FP , pull that assembly and clean the contacts as they come through the mounting flange, see C4 tech tips.
Intermediate
Joined: Aug 2001
Posts: 37
Likes: 0
From: Temperance Mi
Re: Fuel pump ??????'s (6spd.89)
I just had similar problems with my '91 and had to put a fuel pump in it and now it is great. It was starting hard after it sat overnight and if I accelerated slowly it didn't do anything for the first part of the pedal and then took off after that. It was fine at WOT so I didn't think it was the pump, but it was. Try checking your fuel pressure. I took the intake plenum off to get better access and turned the key to on not starting it and you should have 40-45psi. I didn't use a gauge since it was $40 I just hit the shrader and figured it should spray pretty good with that kind of pressure and it just trickled out so I decided it must be the pump. I got one at Murrays for $50 with a lifetime warranty. Mine changed through the gas filler door and I think yours is the same. It changed in '89 or '90 and I can't remember which. If it isn't like that you have to drop the tank which requires serious work, hope you don't have to do that. Good luck!
Thread Starter
Burning Brakes
Joined: Feb 2000
Posts: 1,206
Likes: 0
From: USA USA
Cruise-In II Veteran
Re: Fuel pump ??????'s (White91)
Thanks, I will have to buy agauge for the schrader valve. I think ACCEL
makes one that mounts on the rail permanent. I need to check the Summit
catolog,i think they sell them.
Started car t-nite and idled at 800rpm,did not drive it though. I will get that
gage asap, I need a new tool anyway!!! :D
Thanks,
matt
makes one that mounts on the rail permanent. I need to check the Summit
catolog,i think they sell them.
Started car t-nite and idled at 800rpm,did not drive it though. I will get that
gage asap, I need a new tool anyway!!! :D
Thanks,
matt
