89 5.0 fuel pump not turning on, please give me e hand.

89foxtrot · 07-20-2007, 04:39 PM

My fuel pump in my 89 LX hatch is not turning on. i have checked cut off switch and relays, all seem to be good. any ideas?

thunderchikn · 07-20-2007, 07:00 PM

well if u have already checked the relay and inertia switch then theres only one thing left to do,check the connector at the tank,its a pink wire with a blue trace,see if u have 12 volts when you have someone cycle the key,being thjat theres only a 2 sec buzz. if you have power then u gotta drop the tank and pluck the pump out.

89foxtrot · 07-22-2007, 07:47 PM

i'll give it a try, do you know which mustangs that have the fuel pumps mounted outside the tank?

thunderchikn · 07-22-2007, 08:53 PM

yours should be in the tank,unless it has an aftermarket external pump.

jeds'91_stang · 08-05-2007, 09:36 AM

if its bad id highly recommend a bigger pump. The stock ones a POS and if you have to pull the tank might as well get a better one that will support mods later one. Ive had a 190LPH in mine for quite some time. I swear it made a difference on the top end, if i remember right the stock pump is in the 80-90LPH range witch is pathetic for a V-8.

07-20-2007, 04:39 PM	#1 (permalink)
89foxtrot Junior Member Join Date: Jul 2007 Posts: 2	89 5.0 fuel pump not turning on, please give me e hand. My fuel pump in my 89 LX hatch is not turning on. i have checked cut off switch and relays, all seem to be good. any ideas?

08-05-2007, 09:36 AM	#5 (permalink)
jeds'91_stang Member Join Date: Aug 2005 Posts: 40	if its bad id highly recommend a bigger pump. The stock ones a POS and if you have to pull the tank might as well get a better one that will support mods later one. Ive had a 190LPH in mine for quite some time. I swear it made a difference on the top end, if i remember right the stock pump is in the 80-90LPH range witch is pathetic for a V-8. __________________ "What do i have to say to the guy that runs nitrous, get a real job, turbo or supercharge the thing , then if that isnt enuf add the nitrous"- Gale Banks

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07-20-2007, 07:00 PM	#2 (permalink)
thunderchikn Junior Member Join Date: Jul 2007 Posts: 10	well if u have already checked the relay and inertia switch then theres only one thing left to do,check the connector at the tank,its a pink wire with a blue trace,see if u have 12 volts when you have someone cycle the key,being thjat theres only a 2 sec buzz. if you have power then u gotta drop the tank and pluck the pump out.

07-22-2007, 07:47 PM	#3 (permalink)
89foxtrot Junior Member Join Date: Jul 2007 Posts: 2	i'll give it a try, do you know which mustangs that have the fuel pumps mounted outside the tank?

07-22-2007, 08:53 PM	#4 (permalink)
thunderchikn Junior Member Join Date: Jul 2007 Posts: 10	yours should be in the tank,unless it has an aftermarket external pump.