Fuel pump sanity check
Mar 10, 2020 | 05:15 PM
#1
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Joined: Jan 2016
Posts: 24
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Fuel pump sanity check
1992 22RE 4x4 5 speed.
Just put it back together after spending about 5 years not running by previous owner. Threw a couple gallons of fresh gas in it.
Engine has spark and compression but no fuel (spark plugs are bone dry after many many attempts at starting)
If I manually manipulate the flapper in the AFM, I can hear the relay under the dash click.
Furthermore, if I jump the Fp and +B jumpers while attempting to start the truck, the wire sure did get pretty warm, indicating current going across.
Also, I pulled the round connector apart at the fuel pump itself and tested it with a volt meter (using both wires in the plug, not grounding to the body) and got 12v when manipulating the AFM flap with the ignition in the ON position.
Furthermore, I never hear the pump running. I used a mechanics stethoscope on the tank while my wife pushed in the AFM flapper with the ignition in the ON position. Silence.
Safe to say I've exhausted troubleshooting and should drop the tank to pull the pump?
Just put it back together after spending about 5 years not running by previous owner. Threw a couple gallons of fresh gas in it.
Engine has spark and compression but no fuel (spark plugs are bone dry after many many attempts at starting)
If I manually manipulate the flapper in the AFM, I can hear the relay under the dash click.
Furthermore, if I jump the Fp and +B jumpers while attempting to start the truck, the wire sure did get pretty warm, indicating current going across.
Also, I pulled the round connector apart at the fuel pump itself and tested it with a volt meter (using both wires in the plug, not grounding to the body) and got 12v when manipulating the AFM flap with the ignition in the ON position.
Furthermore, I never hear the pump running. I used a mechanics stethoscope on the tank while my wife pushed in the AFM flapper with the ignition in the ON position. Silence.
Safe to say I've exhausted troubleshooting and should drop the tank to pull the pump?
Mar 10, 2020 | 05:27 PM
#2
1992 22RE 4x4 5 speed.
Just put it back together after spending about 5 years not running by previous owner. Threw a couple gallons of fresh gas in it.
Engine has spark and compression but no fuel (spark plugs are bone dry after many many attempts at starting)
If I manually manipulate the flapper in the AFM, I can hear the relay under the dash click.
Furthermore, if I jump the Fp and +B jumpers while attempting to start the truck, the wire sure did get pretty warm, indicating current going across.
Also, I pulled the round connector apart at the fuel pump itself and tested it with a volt meter (using both wires in the plug, not grounding to the body) and got 12v when manipulating the AFM flap with the ignition in the ON position.
Furthermore, I never hear the pump running. I used a mechanics stethoscope on the tank while my wife pushed in the AFM flapper with the ignition in the ON position. Silence.
Safe to say I've exhausted troubleshooting and should drop the tank to pull the pump?
Just put it back together after spending about 5 years not running by previous owner. Threw a couple gallons of fresh gas in it.
Engine has spark and compression but no fuel (spark plugs are bone dry after many many attempts at starting)
If I manually manipulate the flapper in the AFM, I can hear the relay under the dash click.
Furthermore, if I jump the Fp and +B jumpers while attempting to start the truck, the wire sure did get pretty warm, indicating current going across.
Also, I pulled the round connector apart at the fuel pump itself and tested it with a volt meter (using both wires in the plug, not grounding to the body) and got 12v when manipulating the AFM flap with the ignition in the ON position.
Furthermore, I never hear the pump running. I used a mechanics stethoscope on the tank while my wife pushed in the AFM flapper with the ignition in the ON position. Silence.
Safe to say I've exhausted troubleshooting and should drop the tank to pull the pump?
Mar 12, 2020 | 06:54 AM
#6
Registered User
Joined: Jun 2016
Posts: 717
Likes: 189
From: Florida
Here's the fuel pump on Amazon, but it doesn't include the "sock" filter:
Here's the filter:
Same pump on Rock Auto but includes the filter(reference part # DENSO 9500100): https://www.rockauto.com/en/catalog/...fuel+pump,6256
Amazon over $50 order has free shipping; Rock Auto you pay shipping. Your choice. There are cheaper fuel pumps out there but the Denso is a Toyota OEM part. I wouldn't want to do this job again in a few years because the cheap pump failed.
Here's the filter:
Same pump on Rock Auto but includes the filter(reference part # DENSO 9500100): https://www.rockauto.com/en/catalog/...fuel+pump,6256
Amazon over $50 order has free shipping; Rock Auto you pay shipping. Your choice. There are cheaper fuel pumps out there but the Denso is a Toyota OEM part. I wouldn't want to do this job again in a few years because the cheap pump failed.
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Mar 14, 2020 | 12:18 PM
#10
Registered User
Joined: Sep 2007
Posts: 8,380
Likes: 871
From: San Francisco East Bay
Hmmm. Gasoline shouldn't rust iron like that. I suspect that at some point you had a bunch of water in there. A replacement tank will resolve any possible issue due to the tank (in the rust belt, tanks can rust through at the top). If you keep the fill pipe, take a look at for any possible holes that could let in rain water. And replace the gas cap no matter what.
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