08-24-2018 | #1 |
Join Date: Aug 2014
Location: Montgomery TX
Posts: 263
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QUICK: Which pump is primary? :)
I replaced the pumps a while ago. A year ago the primary pump started blowing the fuse. Stuck a high amp fuse and it held. I'm replacing with an AC Delco, but i don't know which is primary.
Is it the upper or lower pump? The upper looks more used, there is more debris on the sock...
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1991 White ZRJuan #1616 Mileage: 56K Sept-14 -- 113k May-18!!! God Damn I Love This Car! |
08-24-2018 | #2 |
Join Date: Oct 2017
Location: TX
Posts: 2,008
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Re: QUICK: Which pump is primary? :)
I think it is the upper one, but not totally sure. Better look in your FSM, it will tell you.
If for some reason you don't have a FSM (???), let me know & I'll look it up for you.. By the way, while you have the sending unit out, you need to get with Carter for a "Y" fitting to replace the original plastic one.
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Kenny 1990 #442 |
08-24-2018 | #3 |
Join Date: Oct 2017
Location: TX
Posts: 2,008
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Re: QUICK: Which pump is primary? :)
Curiosity got the better of me, so, I checked the FSM. The primary is the upper pump.
You also need to make sure the unit holds pressure before re-installing. ie: pump check valve or connection leaks. Have a great one!!
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Kenny 1990 #442 |
08-24-2018 | #4 |
Join Date: Aug 2014
Location: Montgomery TX
Posts: 263
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Re: QUICK: Which pump is primary? :)
shoot ran out of daylight, replaced the lower no wonder the fuse is still hot as hell.
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1991 White ZRJuan #1616 Mileage: 56K Sept-14 -- 113k May-18!!! God Damn I Love This Car! |
08-24-2018 | #5 |
Join Date: Oct 2017
Location: TX
Posts: 2,008
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Re: QUICK: Which pump is primary? :)
That (hot electrical) is not good for a whole lot of reasons.
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Kenny 1990 #442 |
08-24-2018 | #6 | |
Join Date: Jun 2004
Location: Texas
Posts: 2,431
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Re: QUICK: Which pump is primary? :)
Quote:
When working on the fuel pump system you need to replace the plastic "Y" with my billet "Y" to assure no leaks in the future. The plastic "Y" has been discontinued so makes sense to replace the plastic piece with a billet one.
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95 ZR-1 BLK/Gry #392 LT5 Reg# 868 *RIP* ZR1NET Founding Mem #155 |
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08-25-2018 | #7 |
Join Date: Aug 2009
Location: South Dakota/California
Posts: 3,796
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Re: QUICK: Which pump is primary? :)
Does anyone have a photo of the Billet " Y"?
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08-25-2018 | #8 |
Join Date: Oct 2017
Location: TX
Posts: 2,008
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Re: QUICK: Which pump is primary? :)
Here's a couple of pics. This is the first one Carter made. I recommended that the barbed length be shortened a little on future fittings. There is a limited amount of area that all this needs to stay in, so just a little here & there makes a difference.
z062718-07.jpg z062718-08.jpg I've had it in place for a couple of months. Works fine. No leaks, and a whole lot better than an old piece of plastic!
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Kenny 1990 #442 |
08-25-2018 | #9 |
Join Date: Jun 2004
Location: Texas
Posts: 2,431
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Re: QUICK: Which pump is primary? :)
Thanks Kenny👍
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95 ZR-1 BLK/Gry #392 LT5 Reg# 868 *RIP* ZR1NET Founding Mem #155 |
08-25-2018 | #10 | |
Join Date: Aug 2009
Location: South Dakota/California
Posts: 3,796
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Re: QUICK: Which pump is primary? :)
Quote:
Thank you for the photos...….. |
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