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Fuel Pump Replacement How-To (56K beware) by Brocephus
Started on: 12-02-2008 11:59 PM
Replies: 47 (12729 views)
Last post by: NiotaFiero on 08-09-2017 11:30 AM
Patrick
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Report this Post11-22-2016 05:13 PM Click Here to See the Profile for PatrickClick Here to Email PatrickSend a Private Message to PatrickEdit/Delete MessageReply w/QuoteDirect Link to This Post


This classic thread from a few years back absolutely deserves to be moved to FAQs & HowTos
I'll bring it to Cliff's attention.

 
quote
Originally posted by Cliff Pennock:

FAQs & HowTos (or F&H in short) is a section where I will move, ehm, FAQs and HowTos to.

If you have a suggestion for a thread to move here, please post them in the "Suggestions" thread.


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lorennerol
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Report this Post01-22-2017 08:55 PM Click Here to See the Profile for lorennerolSend a Private Message to lorennerolEdit/Delete MessageReply w/QuoteDirect Link to This Post

Pulled the tank on my 87 today to do this project.

1. THANK YOU. Extremely helpful, especially the pictures.
2. Before you start go get a siphon pump thing. It's six dollars, and the auto parts store is so close to you that the taste of gas in your mouth from twice trying to start a siphon the way your grandfather did will still be in your mouth when you get home. And hours later. Even the ten chocolate chip cookies I ate didn't erase it.
3. On my car, two of the rubber lines go under the car to metal tubes. One to the fuel filter, the other is the return, I presume. The third goes into what looks like wire loom and follows the wiring harness through the frame firewall. I presume this is the charcoal canister. This rubber hose was on top and was a BUGGER to get off the tank. Just getting to the clamp was difficult and then I had to tip the front end of the tank way down and work on prying the hose off from the top. Even then it was a PITA.
4. My fuel pump doesn't have a short rubber hose attaching it to the metal tube. It has some other intermediary widget thing (no clue what it does) that sits between the metal tube and the top of the fuel pump and attaches to both.
5. The electrical connections on the Bosch fuel pump I got doesn't match the connector on the wiring. It came with a sort of converter cable. I'm not fond of this as more connections makes for more possibilities of sparking.
6. I don't think the OP mentions it, but you'll need to remove the support brackets from the coolant lines that run adjacent to the tank so you can swing them out of the way to drop the tank. Maybe this is obvious, but still seems worth mentioning.

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css9450
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Report this Post01-22-2017 09:18 PM Click Here to See the Profile for css9450Click Here to Email css9450Send a Private Message to css9450Edit/Delete MessageReply w/QuoteDirect Link to This Post

 
quote
Originally posted by lorennerol:


2. Before you start go get a siphon pump thing. It's six dollars, and the auto parts store is so close to you that the taste of gas in your mouth from twice trying to start a siphon the way your grandfather did will still be in your mouth when you get home. And hours later. Even the ten chocolate chip cookies I ate didn't erase it.
3. On my car, two of the rubber lines go under the car to metal tubes. One to the fuel filter, the other is the return, I presume. The third goes into what looks like wire loom and follows the wiring harness through the frame firewall. I presume this is the charcoal canister. This rubber hose was on top and was a BUGGER to get off the tank. Just getting to the clamp was difficult and then I had to tip the front end of the tank way down and work on prying the hose off from the top. Even then it was a PITA.
4. My fuel pump doesn't have a short rubber hose attaching it to the metal tube. It has some other intermediary widget thing (no clue what it does) that sits between the metal tube and the top of the fuel pump and attaches to both.


Last time I had to do this job, the tank was completely full. I have one of those Motive Products bleeder bottles; its like a plastic bottle with a pump handle to pressurize it. I used it to pressurize my tank and it let me siphon the vast majority of the gas out. Over eight gallons, at least. Worked like a charm.

Yeah, that uppermost line goes to the Evap canister. The OP's is a little different which is probably a 4-cyl. vs. V6 issue or maybe early models vs. late. Its hard to get the hose off of it when its hidden way up there on top.... Its hard enough to even SEE it! Worst part of the job in my opinion.

The plastic widget thing is the Pulasator. I re-installed mine but some people here have removed it and used hose in its place. I figured its there for a reason so I would keep it.

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Dennis LaGrua
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Report this Post01-23-2017 12:31 PM Click Here to See the Profile for Dennis LaGruaClick Here to Email Dennis LaGruaSend a Private Message to Dennis LaGruaEdit/Delete MessageReply w/QuoteDirect Link to This Post

 
quote
Originally posted by css9450:
The plastic widget thing is the Pulasator. I re-installed mine but some people here have removed it and used hose in its place. I figured its there for a reason so I would keep it.


The pulsator is only needed when you use a Gyrator style of pump. It supposed to reduce pump noise. If you use a turbine pump like the Bosch the pressure is not in pulses so it is not needed.

------------------
" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "

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hcforde
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Report this Post04-13-2017 09:34 PM Click Here to See the Profile for hcfordeClick Here to Email hcfordeSend a Private Message to hcfordeEdit/Delete MessageReply w/QuoteDirect Link to This Post

I am about to drop 2 tanks to replace the fuel pumps. Thanks, Great write up still so many years after.

Much appreciated!!!

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1984_barn_find
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Report this Post07-23-2017 11:16 PM Click Here to See the Profile for 1984_barn_findClick Here to Email 1984_barn_findSend a Private Message to 1984_barn_findEdit/Delete MessageReply w/QuoteDirect Link to This Post

Sooooo I need help..I have an original 1984 se and it had the original fuel pump... the replacement came with an entirely different connection (in fact I don't know how to take apart original.) so what do I do?

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USMUCL
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Report this Post07-24-2017 07:35 AM Click Here to See the Profile for USMUCLSend a Private Message to USMUCLEdit/Delete MessageReply w/QuoteDirect Link to This Post

 
quote
Originally posted by 1984_barn_find:

Sooooo I need help..I have an original 1984 se and it had the original fuel pump... the replacement came with an entirely different connection (in fact I don't know how to take apart original.) so what do I do?


Are you talking about the pump itself, or did you buy a new sending unit from the Fiero Store?

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NiotaFiero
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Report this Post08-09-2017 11:30 AM Click Here to See the Profile for NiotaFieroClick Here to Email NiotaFieroSend a Private Message to NiotaFieroEdit/Delete MessageReply w/QuoteDirect Link to This Post

I sure wish there was a way for the pictures to show.

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