85 Fiero problem solved ! (Page 2/3)
Lou6t4gto MAR 17, 05:59 PM
THERE IS NO END TO THIS !!!!! went out today to move it , turned the "key on", and "NO Pump Pumping" !!!! really starting to piss me off. I have a brand new pump that I'm going to install, this time it is going to get a wired Directly from the fuse box to the pump ! I've already tried everything "Reasonable", Now it WILL RUN !!!. is there any reasonable REASON ,"NOT to do it this way ???? Isn't there a thread on direct wiring the fuel pump somewhere on here ?? Thanks
Patrick MAR 17, 06:18 PM

quote
Originally posted by Lou6t4gto:

is there any reasonable REASON ,"NOT to do it this way ????



We previously covered that Here.
Lou6t4gto MAR 17, 09:53 PM
so, back to the oil pressure switch AGAIN. the relay Is NEW Already
Patrick MAR 17, 10:26 PM

quote
Originally posted by Lou6t4gto:

so, back to the oil pressure switch AGAIN. the relay Is NEW Already



Your point being?

I understand your frustration, but I was simply informing you of the potential danger of directly powering the fuel pump... because you asked!
Lou6t4gto MAR 17, 11:53 PM
that I understand. thank you
Lou6t4gto MAR 18, 11:59 PM
wired from the lighter to the Fuel pump at the test point under the console, at first nothing, no pumping at all (only a spark at the connection, so it was sending power to it), tried the key again and it cranked and started, ran about 2 seconds and pressure dropped went down to 3 pounds and quit. hot wired from lighter to fuel pump. went up to 13 psi,then ran, and dropped to 0 again, would not bring fuel pressure up again. ordered new oil pressure sender, doubt it will make a difference, I have a new pump so I will install it and replace EVERY wire and Connection from the sender in the tank to the plug on the rear firewall.
Patrick MAR 19, 01:31 AM

quote
Originally posted by Lou6t4gto:

hot wired from lighter to fuel pump. went up to 13 psi,then ran, and dropped to 0 again, would not bring fuel pressure up again.



When that occurs, can you still hear the fuel pump running?
If yes, then possibly there's an issue with that short length of hose inside the gas tank.
If no, I suspect the fuel pump itself is faulty... or, as you're already suspecting, a fault with the wiring (even though using the ALDL terminal eliminates a lot of the wiring).

[This message has been edited by Patrick (edited 03-19-2020).]

Lou6t4gto MAR 19, 12:43 PM
no, when pump stops, psi drops, the pump is NOT "Running". even though it IS Getting Power to it. Hopefully I will get to install new pump today (depends on how hot it is . Fla (90)
Patrick MAR 19, 12:51 PM

quote
Originally posted by Lou6t4gto:

...even though it IS Getting Power to it.



Is it for sure? Even if you're applying 12v to the ALDL fuel pump terminal, it's still possible there's a break in the short length of wiring (or at the plug connection) to the gas tank.
Lou6t4gto MAR 20, 06:40 PM
just bought and installed a NEW FUEL PUMP yesterday. Before re installing the tank, (with pump installed) I used jumper cables and checked that the pump did indeed" RUN" before I put the Tank back in the car. The pump "ran", but pumped NOTHING! checked all the hoses to make sure there was nothing plugged or leaking. all fine. then I thought "do I TRUST" that this thing was MADE Correctly ! the pump would run but pumped Nothing, because the pump was running BACKWARDS ! The new plug (pigtail) that came with the pump was wired Backwards (color coded)(neg in positive place and positive in neg spot !!!!!) changed it around and now it works fine. ****So Far !**** ;-) -- WHY can't we buy parts that "actually Work Correctly" right out of the package anymore ???! Doesn't seem to matter what brand.