My gas gauge (90 FC) which was working fine just went to zero (well actually below the empty mark) a bit after putting gas in the car. I've checked the connector at the tank (wiggled it) and it is tight. Wondered if someone could give me some help on other trouble shooting ideas.

Thanks

 

http://www.teamfc3s.org/main/factory...cal_System.pdf

page t-39

 

Thanks for the info......

 

Sometimes the sending unit just goes bad. Happened to me. If you find that after testing it that this is the case, here is where you can find another one. It's about halfway down the page.
http://www.mazdatrix.com/86-92Electrical-Engine.htm

 

if when i fill my car it doesnt go all the way to full does that mean the sending unit is bad? the low fuel light doesnt come on either(found out the hard way).

 

sometimes the floatation device in ur tank is bad, or the sensor.. You can get one at the junk yard in teh fuel tank, and just swap it out...sometimes ucan find agood turbo fuel pump too..

 

i might just have to do that

 

When I first bought my car, the gauge worked, but the fuel light didn't. After about a year, I watched the gauge die on me while I was on the highway. When I replaced the unit, the gauge worked as it should again, and I regained the LOW FUEL light functionality.

Your gauge could be on its way out, though I can't put money on it. It seems like the lack of a functional LOW FUEL light is the first thing to go bad with the unit.

 

yea i have been noticing every time i fill up it goes higher on the gauge. when i first bought it it wouldnt work past 1/2 tank now it works almost all the way to full. still no low fuel light though