Fast help plz, I have no fuel pump fuse, how do I releive the pressure?
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Fast help plz, I have no fuel pump fuse, how do I releive the pressure?
Fast help plz, I have no fuel pump fuse, how do I releive the pressure?
that spot on the fuse block is labled but empty? All it says anywhere in book or service manual is the remove that fuse. well it is not there?
that spot on the fuse block is labled but empty? All it says anywhere in book or service manual is the remove that fuse. well it is not there?
Supreme Member
Joined: Mar 2000
Posts: 13,414
Likes: 6
From: Central NJ, USA
Car: 1986 Firebird
Engine: 2.8 V6
Transmission: 700R4
Are you changing the fuel filter? No need to relieve pressure. Remove the gas cap first, and put out any cigarettes.
The pressure will start bleeding off as soon as you crack a fitting open. The fuel will drip and drip and drip and drip from the lines, and just when you really panic, it'll slow down and stop.
'Course, if it takes 5-10 minutes, and its still dripping, then it's not going to stop! Put your arm in a garbage bag and change the filter.
Interestingly enough, with my original fuel pump, when changing a filter, the fuel would stop dripping. But after changing the fuel pump TWICE, with each pump (Borg-Warner), the fuel keeps dripping and dripping. It doesn't stop. I wonder if the original GM pump had something in place to stop that from happening.
If you do want to bleed off pressure, you can unhook the connector in the back of the car, above the axle, by the fuel tank. This is the electrical hookup for the fuel pump.
The fuse at the front of the car that is for the fuel pump is also for the computer. If you pull that fuse, you not only kill the fuel pump, but you kill the computer. The computer controls spark.
You could also bleed pressure off another way. Find the Shraeder valve on your fuel rail. With a COLD ENGINE, wrap a shop towel around and over the valve. Put on goggles, and remove the valve cap. Depress the center of the valve with a screwdriver. Fuel will spray all over, so keep the rag over your screwdriver. When fuel stops spurting, the pressure's gone.
When the old filters off, examine the hard lines that go into the filter. They should each have a little black o-ring on the end. If there's no little black o-ring on the ends of the lines, look inside the ends of the filter. If an o-ring gets lost, you'll get a fuel leak from whichever hard line it's missing from.
The pressure will start bleeding off as soon as you crack a fitting open. The fuel will drip and drip and drip and drip from the lines, and just when you really panic, it'll slow down and stop.
'Course, if it takes 5-10 minutes, and its still dripping, then it's not going to stop! Put your arm in a garbage bag and change the filter.Interestingly enough, with my original fuel pump, when changing a filter, the fuel would stop dripping. But after changing the fuel pump TWICE, with each pump (Borg-Warner), the fuel keeps dripping and dripping. It doesn't stop. I wonder if the original GM pump had something in place to stop that from happening.
If you do want to bleed off pressure, you can unhook the connector in the back of the car, above the axle, by the fuel tank. This is the electrical hookup for the fuel pump.
The fuse at the front of the car that is for the fuel pump is also for the computer. If you pull that fuse, you not only kill the fuel pump, but you kill the computer. The computer controls spark.
You could also bleed pressure off another way. Find the Shraeder valve on your fuel rail. With a COLD ENGINE, wrap a shop towel around and over the valve. Put on goggles, and remove the valve cap. Depress the center of the valve with a screwdriver. Fuel will spray all over, so keep the rag over your screwdriver. When fuel stops spurting, the pressure's gone.
When the old filters off, examine the hard lines that go into the filter. They should each have a little black o-ring on the end. If there's no little black o-ring on the ends of the lines, look inside the ends of the filter. If an o-ring gets lost, you'll get a fuel leak from whichever hard line it's missing from.
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I ended up just jacking a scewdriver into the old filter till it poked a hole in it.
Just it says everywhere on the filter and in the book that you gotta relieve the pressure.
but i think my fuel pump is bad, filter help some but i still get a studder in first or in second when turning and then taking off. like it loses fuel for a sec.
also my check engine light has been going off, yea i know, going off? with no stock fan hooked up it was on all the time, but last few days that it has been acting off it has been off.
Just it says everywhere on the filter and in the book that you gotta relieve the pressure.
but i think my fuel pump is bad, filter help some but i still get a studder in first or in second when turning and then taking off. like it loses fuel for a sec.
also my check engine light has been going off, yea i know, going off? with no stock fan hooked up it was on all the time, but last few days that it has been acting off it has been off.
Supreme Member
Joined: Mar 2000
Posts: 13,414
Likes: 6
From: Central NJ, USA
Car: 1986 Firebird
Engine: 2.8 V6
Transmission: 700R4
They say that so you won't blow up, or get fuel in your eye/mouth/ears/etc.
The only way you'll know for sure is to buy/rent/borrow a fuel pressure gauge. For $30, you'll use it over and over and over again. Everytime my car acts up in a bad way (as in, not starting, or stalling, or etc), I put the FP gauge on it, just to make sure it's not the fuel system. You need to make sure you get the high pressure one, not the $15 low pressure one (for carburetors).
The only way you'll know for sure is to buy/rent/borrow a fuel pressure gauge. For $30, you'll use it over and over and over again. Everytime my car acts up in a bad way (as in, not starting, or stalling, or etc), I put the FP gauge on it, just to make sure it's not the fuel system. You need to make sure you get the high pressure one, not the $15 low pressure one (for carburetors).
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Tom
I just went or a ride and if I am real easy on the throtle it has no problems but quick movments makes it studder till I correct my foot pressure and speed. Maybe TPS???
I was think fuel filter.[thought it would help] cause I got the car in 9/99 and I have never changed it.
It needed it. But gas was high and my usual is Sunoco ultra94 but twice in a row i got cheap 7-11 gas and on the second tank it started acting up. I quickly got some more Sunoco and I am on the second tank of Sunoco since then.
][but stil a full second tank]
i thought maybe the 7-11 gas took out my pump but the filter needed changing anyways. I assume it is an original fuel pump with 204,500 miles plus idel time of use.
But maybe its the TPS
I dont want to drop the tank.
I just went or a ride and if I am real easy on the throtle it has no problems but quick movments makes it studder till I correct my foot pressure and speed. Maybe TPS???
I was think fuel filter.[thought it would help] cause I got the car in 9/99 and I have never changed it.
It needed it. But gas was high and my usual is Sunoco ultra94 but twice in a row i got cheap 7-11 gas and on the second tank it started acting up. I quickly got some more Sunoco and I am on the second tank of Sunoco since then.][but stil a full second tank]
i thought maybe the 7-11 gas took out my pump but the filter needed changing anyways. I assume it is an original fuel pump with 204,500 miles plus idel time of use.
But maybe its the TPS
I dont want to drop the tank.
Supreme Member
Joined: Mar 2000
Posts: 13,414
Likes: 6
From: Central NJ, USA
Car: 1986 Firebird
Engine: 2.8 V6
Transmission: 700R4
Originally posted by 86bird_28v6_5spd_ramair
Tom
I just went or a ride and if I am real easy on the throtle it has no problems but quick movments makes it studder till I correct my foot pressure and speed.
(..snip..)
I dont want to drop the tank.
Tom
I just went or a ride and if I am real easy on the throtle it has no problems but quick movments makes it studder till I correct my foot pressure and speed.
(..snip..)
I dont want to drop the tank.
And the job's not that bad; hell, I almost had fun when I changed my pump for the second time!!
[edit]Uh, wait, no, I didn't. I actually hated it.
Last edited by TomP; Apr 8, 2002 at 02:55 PM.
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