Hi, I just took apart my old instrument cluster and replaced it with a new one to fix my fuel gauge. Now i am not sure if the fuel gauge is stuck on full or if thats the actual reading. I have already replaced the fuel pumps so I know thats not the issue.i also put the new cluster into diagnostic mode and it works. i just want to know if it would be possible to check if the fuel reading is accurate. if anyone can help it would be greatly appreciated.

this is the new one i got

this is the new one installed you can see it is reading as full.

 

Yes, you can measure resistance at the fuel pump harness under the back seat. Read across pins 2 and 5 on the harness, it will vary from 3 to 80 ohms depending on a full/empty tank.

Those troubleshooting steps are in section DI - Driver Information of the factory service manual.

https://www.nicoclub.com/archives/in...e-manuals.html

 

This is done with the pump still in the car, just unplug the harness with the vehicle OFF and measure the ohms across those pins.