recheck where you were at to replace the heater core,might have accidentally un plugged something.also look into blown fuses . good luck
I had this exact problem on my 1996 Taurus. The solution in my case was to replace the transmission range sensor. I replaced it myself. It was easy to change. I can't say if that is what is wrong with your Taurus, but it was what was wrong with mine. Good Luck! This was also the problem with my '96 Taurus... part was also refferd to a Nuetral Safty Switch"
Maybe you have a problem in your main wiring harness. No fun.. Could also be an electrical sensor.
Replaced by other models.
The Taurus SHO has a timing belt that must be replaced every 100,000 miles. All other Ford Taurus's have a chain that should last the life of the engine.
If you have a Ford Taurus and the high beams stay on all the time, chances are that you have a defective control switch. The dome light uses a separate switch but is likely to have the same problem. To correct the problem, both switches should be replaced.
Had the same problem off and on in my 1999 Taurus. The speedometer needs to be replaced. The problem is in the speedometer and not the transmission like I was initially led to believe. My mechanic said it wasn't that big of a repair.Coincidentally, the vehicle speed sensor feeds information to both the speedometer and the transmission....See "Related Questions" below for more
Have the speed sensor replaced.
Possibly the O2 sensors need replacing. There's one in each exhaust manifold.
This is a internal problem, I had same thing wrong and I replaced all I could then brought it to shop and he said the bands are slipping
my transmission is not shifting on my 2005 Ford Taurus what could be the problem
Ive read that most Taurus cars have a faulty pulleythat the serpentine belt runs through which makes irritating noises such as squeaking, humming, tilted steering. It must be replaced to fix the problem. Belt conditioner is a temporary fix however u would have to use it daily. Highly reccomended to just get it replaced. hope this helps.
I just had mine replaced and there were 3 total.