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-   -   Another Fuel Gauge Issue (https://www.toyota-4runner.org/3rd-gen-t4rs/289161-another-fuel-gauge-issue.html)

JLStout 08-11-2020 06:30 PM
Another Fuel Gauge Issue
 
So my fuel gauge on my cluster quit working about a year ago. I dropped the tank and changed the sender. No joy. Finally bit the bullet and bought a refurbished cluster with the correct mileage and swapped it out. Works great. I plugged my utility trailer into my harness on the truck and the fuel gauge quit working again.
When it quit originally I had my travel trailer plugged into my truck.

Both trailers have been towed by other vehicles with no issues, and all the lights on the trailers work correctly.

I am stumped on this one. Any ideas?

brillo_76 08-11-2020 07:07 PM
Quote:
Originally Posted by JLStout (Post 3530696)
So my fuel gauge on my cluster quit working about a year ago. I dropped the tank and changed the sender. No joy. Finally bit the bullet and bought a refurbished cluster with the correct mileage and swapped it out. Works great. I plugged my utility trailer into my harness on the truck and the fuel gauge quit working again.
When it quit originally I had my travel trailer plugged into my truck.

Both trailers have been towed by other vehicles with no issues, and all the lights on the trailers work correctly.

I am stumped on this one. Any ideas?

What year of 4 runner and engine ??

JLStout 08-12-2020 11:48 AM
1999 with the 3.4.

Grgg1978 08-14-2020 10:53 PM
Try replacing the ground to the sending unit. That did the trick for mine. At least that’s what I traced mine to based on research and testing.


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Grgg1978 10-01-2020 04:32 PM
Quote:
Originally Posted by Grgg1978 (Post 3532047)
Try replacing the ground to the sending unit. That did the trick for mine. At least that’s what I traced mine to based on research and testing.


Sent from my iPad using Tapatalk

https://uploads.tapatalk-cdn.com/202...d694e88753.jpg
This is where I spliced at then grounded under the drivers kick plate cover.


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Dieselchessy 10-02-2020 01:29 AM
My 99 did similar. Was fine towing for years, then one day was towing a friends boat with short trailer cable and turned sharp enough to unplug the ground side of the connector.
Some smoke came out from under the dash and my fuel gauge read about 1/2 tank all the time.

I figured out I had torched a ground link somewhere under the dash.

To fix it I just installed a new body to frame ground strap near the fuel tank and rear wheel well. It resolved the issue.

I never did figure out exactly what component had let the smoke out despite looking several times.


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