Any war stories from the trenches on how
difficult it actually was ??
Reading the shop manual, it looks like a
LOT of work !
putting the car on a lift, dropping the
rear axle, removing stabilizer bar, remove
coil springs, etc. - all this before you
can even drop the fuel tank to get at the
I have a dead fuel pump in my '88 IROC
(confirmed, since I fed it +12 volts directly
to it - with not a peep out of it)...
Anyone swap out a in tank fuel pump that
has any helpful advice/hints ?
I'm seriously considering just cutting a hole
above the sheet metal to get at the pump (vs
disassembling the entire rear of the car)...
nospam spilled my beer when they jumped on the table and proclaimed in
I have never done this...
However,even though I don't recommend this route..if you decide to cut a
hole above the tank, be careful. Also, there are "doors" available from
Jegs, for instance, that can be put in to make it look cleaner.
Of course, I wouldn't go that route for many reasons...
It was a quite a bit of work. It took me 10 hours the first time and
around 6 hours the second time. I found that the hardest part was
draining the gas out of the tank. I did it on jack stands. Remember to
take the exhaust all the way out and drop the axle as low as possible.
All in all it is a simple project.
I wouldn't cut holes due to the fact that I feel it will impact the
integrity of the car, allow fumes in the car, and look like ass if done
make sure you have help and the filler pipe is a bear even with everything
out of place
get the rear end way up give yourself plenty of room I changed mine then
I did not need to ............... drat
After reading what all had to be removed to get the tank out, I did exactly
that. It now will take well under an hour to replace the pump. Nice. You
still have to unbolt the tank straps to lower the tank a bit. This gets it
away from the cutting wheel and allows enough clearance to remove the fuel
Disclaimer: Sparks and raw fuel don't mix. Be careful. This will lower the
value of a numbers-matching car, which mine is, but it's a daily driver, an '85
Z-28 TPI. This can weaken the structural integrity, although I've had no
I first cut a square hole large enough for the round fuel pump to come up
through, but the hard lines going into it required an L-shaped hole, so I cut
some more. I only cut the top and sides, leaving the bottom attached, and bent
the whole thing toward the front of the car. Then I bent it back, put some
inner tube in the crack and secured it with overlapping metal straps and
Here's a pic of the opened hole:
Horsepower is cheaper than therapy.
I'm about to drop the fuel tank on my '89 IROC. I already took the muffler
and tailpipes off (10 minutes). I'm gonna syphon the fuel from the tank
with a vacuum pump. Yes the manual says remove entire rear axle assembly,
but from what I can tell thats not accurate. Filler neck, heat shield, and
part of the suspension(that funny looking cross piece ladder bar thing
behind the axle) should complete the project. Just support the car with
jack stands and let the axle hang low. Should slide right out. Holes
suck! But keep in mind I haven't actually done this yet.
I have and you can do it with out removing the axle but its no fun get help
and I am not talking about wife (unless she bigger than mine)get a friend
give him beer after the work is done. The problem comes in with the filler
neck it is bent and very hard to get out with the axle in the way then
it back in. Good luck it can be done learn lot's of new words while doing
I got to do it twice. Takes two men six hours in the garage on jack stands.
Buy the good Delco pump, not the auto parts store cheapy, so you won't have
to do it twice too.
DON'T CUT THE TANK YOU WILL ONLY END UP REPLACING IT TOO!!!!!
The job is a lot of work but it went pretty well. No major problems. Except
for the first pump quitting not long after it was put in.... The Cheapy pump
stopped working in the middle of the state fair parade. Had to push the car
off... Sucked big time.
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