Just wanted to say thanks Adam for posting this video. I thought replacing
the fuel pump in my girlfriend’s 99 Grand Prix would be harder, but it was
relatively easy, thanks to your video.
That is every fuel pump in this area. This one was a bit different because
I did not have to drop the tank, but yeah that is the norm. Just like the
Monte is normal rust I deal with here too.
I don’t hear any noise from the fuel pump when the key ignition is turned
on. My mechanic said it most likely the fuel pump. I’m worried it might
still be that resistor or some other electrical short. The mechanic insists
that the fuel pump can’t be changed from the trunk on this model which is
false because i saw the cover in the trunk before the car was towed.
Most book time on tank drop is 4.5 – 5.5 hours. I distinctly remember that
one from the Aldata banks. Mostly because I always challenged the book
time, and could usually beat it. Hel most of the time I could cut the book
time in half, and that is in a shop with no lift.
He also says the gas tank and gas line needs to be replaced. Tank has been
leaking for a long time when filled to the top. Do you think I should try
doing an aftermarket fuel pump and replacing myself? My dad wants to junk
the car asap.
Brother that could be a bunch of different things. Is the check engine
light on? Getting that read would put you in a direction. It could be an O2
sensor, an EGR valve, a coil pack going out, or just the a particular bad
tank of fuel on worn spark plugs. You really should start the process of
full tune up, at very least it will prolong the life of the little fella. I
am not sure if the pump is the same on that or not, you may have to drop
the tank for that one. Just pull the carpet in the trunk
First check for fuel pump is open the fill cap and have someone turn the
key to ON listen for it to pump. Or you can do the hillbilly and shoot
ether into the plenum, if it fires and dies it is not getting fuel to the
rail. Though I prefer to listen to see if it is running and put a fuel
pressure test on it. You can buy a tester at parts stores and they should
be able to tell you what the prime pressure is and what the running
pressure is. But check the filter as well.
If that tank is leaking, you have much larger safety concerns at this
point. Not only are you driving a large bomb, but those fumes have most
likely come back up into your cabin. Pull the tank if you can, if you don’t
have the option to change the tank as well or look into another vehicle,
then yes you can change that pump yourself with few tools in your driveway.
It may take an hour or so if you have never done one before. Just be safe
and observe your better options where available.
Great vid Adam, oh you make it look so easy, but hek that motivates people
like me to do it myself, so here is the deal, I can watch you do this and
go and do it myself, but my biggest issue and hangup is knowing that this
is the problem. How did you know that the fuel pump needed to be replaced
on this job? Thanks again!
My 98 grand prix cranks but doesn’t turn over. I tried doing that fuel pump
resistor bypass where u jump the fuel pump relay under the hood to get the
car to start, with no success.
Just a note, the “car lot” jobs I do. Most of them are half assed at best,
as that is exactly what the customer wants. With that there a lot of things
I do on those cars I would never suggest as the norm or a respectable
repair.
Pull up the carpet in the trunk. If there is the access panel there it is
the same procedure. If not, well you must pull the tank to replace it. I am
not certain on that model year exactly how it is removed, but know for fact
it is in the tank. Anything post 1985 the pump is in the tank. Basically if
it does not have a carburetor, it’s in the tank. Hope this helps good luck
If the relay does not “click” when turning the key to “on” then it is a
relay. Past that it is the fuel pump, the electrical system for your fuel
delivery is very simple one relay in most cases and the pump. Easiest way
to find out for certain (after checking for the relay click) is to shoot
some fuel or starting fluid into the plenum if she fires up then dies
immediately then it’s 99% of the time just the pump.
That would be the sending unit itself. The sending unit is in the same
enclosure as the fuel pump. That in nearly every case fixes the issue with
the wonky gas gauge. As the owner and the driver of the car, if it were up
to me, I’d change the fuel filter at this time as well.
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Just wanted to say thanks Adam for posting this video. I thought replacing
the fuel pump in my girlfriend’s 99 Grand Prix would be harder, but it was
relatively easy, thanks to your video.
That is every fuel pump in this area. This one was a bit different because
I did not have to drop the tank, but yeah that is the norm. Just like the
Monte is normal rust I deal with here too.
New fuel pump you have to rewire harness. Does a guy have to drop the tank
to get to the rest of that fuel pump wiring?
If my gas gauge is always reading full or empty it’s not accurate would a
fuel pump replacement be a good start I have 236000 on my grand prix
I don’t hear any noise from the fuel pump when the key ignition is turned
on. My mechanic said it most likely the fuel pump. I’m worried it might
still be that resistor or some other electrical short. The mechanic insists
that the fuel pump can’t be changed from the trunk on this model which is
false because i saw the cover in the trunk before the car was towed.
Most book time on tank drop is 4.5 – 5.5 hours. I distinctly remember that
one from the Aldata banks. Mostly because I always challenged the book
time, and could usually beat it. Hel most of the time I could cut the book
time in half, and that is in a shop with no lift.
He also says the gas tank and gas line needs to be replaced. Tank has been
leaking for a long time when filled to the top. Do you think I should try
doing an aftermarket fuel pump and replacing myself? My dad wants to junk
the car asap.
Very Cool, Nothing at wrong with used parts..
wow the fuel pump looked like an excavated dinosaur foot or something in
all that dirt. was picturing a small brush delicately wiping off the dirt.
Brother that could be a bunch of different things. Is the check engine
light on? Getting that read would put you in a direction. It could be an O2
sensor, an EGR valve, a coil pack going out, or just the a particular bad
tank of fuel on worn spark plugs. You really should start the process of
full tune up, at very least it will prolong the life of the little fella. I
am not sure if the pump is the same on that or not, you may have to drop
the tank for that one. Just pull the carpet in the trunk
First check for fuel pump is open the fill cap and have someone turn the
key to ON listen for it to pump. Or you can do the hillbilly and shoot
ether into the plenum, if it fires and dies it is not getting fuel to the
rail. Though I prefer to listen to see if it is running and put a fuel
pressure test on it. You can buy a tester at parts stores and they should
be able to tell you what the prime pressure is and what the running
pressure is. But check the filter as well.
If that tank is leaking, you have much larger safety concerns at this
point. Not only are you driving a large bomb, but those fumes have most
likely come back up into your cabin. Pull the tank if you can, if you don’t
have the option to change the tank as well or look into another vehicle,
then yes you can change that pump yourself with few tools in your driveway.
It may take an hour or so if you have never done one before. Just be safe
and observe your better options where available.
That’s great that it has a cover you can remove. Very few cars have that
cover.
That’s what I was thinking to rather then half ass the job thanks for the
help
Great vid Adam, oh you make it look so easy, but hek that motivates people
like me to do it myself, so here is the deal, I can watch you do this and
go and do it myself, but my biggest issue and hangup is knowing that this
is the problem. How did you know that the fuel pump needed to be replaced
on this job? Thanks again!
My 98 grand prix cranks but doesn’t turn over. I tried doing that fuel pump
resistor bypass where u jump the fuel pump relay under the hood to get the
car to start, with no success.
There is enough of the pigtail right there to splice in the new
connections. I really is a slick set up, one of the best I have ever dealt
with.
Hey how would you suggest to remove the fuel lines I’m having trouble with
thay
Just a note, the “car lot” jobs I do. Most of them are half assed at best,
as that is exactly what the customer wants. With that there a lot of things
I do on those cars I would never suggest as the norm or a respectable
repair.
Pull up the carpet in the trunk. If there is the access panel there it is
the same procedure. If not, well you must pull the tank to replace it. I am
not certain on that model year exactly how it is removed, but know for fact
it is in the tank. Anything post 1985 the pump is in the tank. Basically if
it does not have a carburetor, it’s in the tank. Hope this helps good luck
check that out first and if you need assistance I am only a call away. I’ll
get you as far as I can over the phone if you like
I charge 2 and a half hours on the fuel pumps where I have to pull the gas
tank out.
If the relay does not “click” when turning the key to “on” then it is a
relay. Past that it is the fuel pump, the electrical system for your fuel
delivery is very simple one relay in most cases and the pump. Easiest way
to find out for certain (after checking for the relay click) is to shoot
some fuel or starting fluid into the plenum if she fires up then dies
immediately then it’s 99% of the time just the pump.
That would be the sending unit itself. The sending unit is in the same
enclosure as the fuel pump. That in nearly every case fixes the issue with
the wonky gas gauge. As the owner and the driver of the car, if it were up
to me, I’d change the fuel filter at this time as well.
The car started but cut out on me while on the road so we had it towed to a
workshop I’ll post what was wrong later