"Bruce Griffis" <bruce.griffis@xxxxxxxxx> said: >(I am REAL happy I stored a beer in the back of the fridge. It's 90's >and humid today. Definately a beer day! Even if it's a just Rolling >Rock from Latrobe PA.) Ah, that reminds me of a story. Good one to repeat, too, when the temp is above 100 as it is today in Richmond, VA... >Date: Thu, 29 Mar 2007 17:02:50 -0400 >To: amc-list@xxxxxxxxxxxx >From: Archimedes <Freedom@xxxxxxxx> >Subject: Re: 1970 Rebel Fuel Guage > > >>My fuel guage stays on empty even whe tank is full. Ho do I determine whether the problem is with the guage itself or in the sensing unit in the tank? > > >Just hold a match up to the fuel filler neck and look in. > >OK, OK, here's the real guide, from the 70 TSM: > >Sending Unit Tests --------------------------- > >1. Check to make sure guage has a good ground. > >2. Have a sip of beer. Better make it two. > >3. Off-car test with an ohmmmmmmmmmmmmeter -- Connect ohmmeter leads to each other and zero the meter. > >4. Connect leads to indicator terminal and pick-up tube. > >5. Raise the float arm to the upper stop. The meter should read 9.6 ohms, more or less. > >6. Go have dinner with your kids. Or someone else's kids, it doesn't matter. > >7. Allow the float arm to fall to its lower stop -- UNDER ITS OWN WEIGHT ONLY, and at roughly the same attitude as when it is installed in the car. If it doesn't fall to its bottom stop, it is defective. > >8. Tape this month's centerfold on your workbench so you have something to keep your mind off the highly flammable fuel vapor now permeating your workshop. > >9. If it does, it should measure 73 ohms, plus or minus 12 (geez, what a fudge factor!). > >10. If the sender fails any of these tests, it is defective and must be replaced. > >Fuel Guage Tests ---------------------------------- > >1. If all indicators fail to operate or are grossly incorrect, check the instrument panel voltage regulator before harassing the fuel guage. > >2. Disconnect the wire from the fuel tank sending unit, and connect it to a known good sending unit. [now, where did I put my spare NOS fuel tank sender... D'OH!!!] > >3. Connect a jumper wire to a good ground. > >4. Go for a walk, and finish your beer. Get another one. > >5. Turn on the ignition switch. > >6. Move the float arm to the upper stop. The indicator should read "F" or "full". > >7. Allow the float arm to return to its lower stop. The indicator should now read "E". > >8. If the indicator now reads correctly, the tank sending unit is defective. > >9. Swear quietly at the thought of having to drop the fuel tank to get at that danged sending unit. > >10. If the indicator still reads improperly or is erratic, the indicator or the wiring to the indicator is faulty. > >11. Nip off some more beer. > >12. Disconnect the main harness from the instrument cluster. > >13. Call up your best friend and ask him to bring over more beer. > >14. Connect the lead from the test sending unit to the fuel indicator pin terminal at the rear of the instrument cluster. > >15. Connect a jumper wire from the pickup tube of the test sending unit to a steering column mounting bolt to provide a good ground for the test unit. > >16. Finish your second beer, open one more, chug it, and get another. > >17. Connect a jumper from the ignition terminal of the main harness plug to the ignition terminal of the cluster. > >18. Repeat the test for the tank sending unit. > >19. Throw a wrench at the cat trying to sneak into your garage. > >20. If the indicator does not read correctly or is erratic, the indicator is defective and must be replaced. > >21. If the indicator reads correctly, the wire between the indicator and tank is defective and must be repaired. > >22. Finish up the rest of your six pack, and call your friend again to ask where he is with the beer. > >-- end -- _______________________________________________ Amc-list mailing list Amc-list@xxxxxxxxxxxx http://splatter.wps.com/cgi-bin/mailman/listinfo/amc-list