fuel guage problem

I've got a "86 with the MT5 cluster...tach and all . The fuel guage is past full by a quarter of a tank...I changed the cluster only to have it jump in the same place :screwy: All the guages work except the #$%^gas gauge any ideas of the problem? BTW I just got it from an estate sale and it seems to be in great shape...I just don't want top run out of gas :nono:

Have you checked the sender? This would be a part of the in tank fuel pump assembly and would require a fuel tank drop, probably. Don't know what the correct readings should be but I would think somewhere in the 0 to 100 ohm range. I believe 0 ohms (on a VOM) would be empty and the higher resistance would be full or not empty depending on the fuel level in the tank.

Thanks for the reply, One out of thirty visits to the thread with a reply(?) Will check the reading at the sending unit....Thanks again

I had that prob with my 00 ford taurse it was a sensor behind the dash not sure what its called but it drove me nuts . replace it at a dealer no prob sence