Has anyone had this problem. The gas gauge reads empty unless tank is full , then it reads just under 1/4. I can live with this, since electronic readout is fine, but is this an easy (cheap) fix ???

Has anyone had this problem. The gas gauge reads empty unless tank is full , then it reads just under 1/4. I can live with this, since electronic readout is fine, but is this an easy (cheap) fix ???


I had a similar problem, my Mark would show 3/4 when full, it turned out to be a bad ground wire on the sending unit in the tank. It cost me like $40 but if the sending unit is bad then it might up in $100-$200 to fix so good luck

Spoonz

yes, there's probably an issue with the fuel sending unit.

You're lucky it's reading low. My '89 MK VII came to an abrupt stop several hundred miles from home, the gas gague was reading 1/4 full. I had it towed to the local rural Ford dealer, rented a car from him to get home (it was late Thursday), only to have him call me the following Monday to tell me the bad news: I had run out of gas. Fortunately the service manager had a family function the next weekend and offered to drive it not too far from my place. I took it to the dealer I bought it through (I got it through the Ford vendor purchase plan). They replaced the sender, for free and Ford sent me a check covering the cost of the rental! Needless to say I was astonished. I forget the term that was used, but it had something to do with customer inconvenience with a luxury car. Those really [I]were[I] the days, eh? I can't believe such a thing would exist today.

Now my "off topic" question: anyone fit a Whipple or Kenne Bell type supercharger under the hood of an '89 style Mark? My GT40 motor runs like a bat out of hell, with the latest horsepower ratings comming out, I want to remain competitive in my "old man's car."