2008 Ford Taurus Transmission Information

[FLYRITE]

I recently bought a 2008 Ford Taurus with 91000 miles. When I am going to overtake on the highway, the tach needle goes up to around 3000 rpm and stops, but the car keeps going faster. The closest to this I have ever seen is the cvt in the Ford Escape. Is this transmission half cvt? Where can I get detailed information about it?

[The White Falcon]

Originally Posted by FLYRITE

I recently bought a 2008 Ford Taurus with 91000 miles. When I am going to overtake on the highway, the tach needle goes up to around 3000 rpm and stops, but the car keeps going faster. The closest to this I have ever seen is the cvt in the Ford Escape. Is this transmission half cvt? Where can I get detailed information about it?

Transmission is the 6F50, a joint GM-Ford design. No CVT about it.

[behlinla]

The previous generation Ford Five Hundred (2005-2007) used a CVT, but your car doesn't.

If the engine pulls just fine past 3000 RPM and the shifting is normal, I would say it's a problem with the instrument cluster (either looses communication or is bad).

Try putting the cluster into ETM (hold Reset button, turn the key on, and releases when the display changes). Scroll through using the reset button until you have the RPM digital display. Now do it again and see what happens to the number when you get to 3000.

[FLYRITE]

The cluster is fine and the engine goes to the red line just fine at close to or at wot (except for shift flare, but that's another story). At a quarter or half throttle, the rpm goes to either 2500 or 3000 rpm and stops, but the car will keep accelerating until 60 or 70, then it upshifts. It is not problematic, I thought it was normal for this car but was just curious how they made the 6 speed act like a cvt in certain conditions.

[behlinla]

Nope, not normal. RPM needs to change with speed and gear shifts. Try ETM like I suggested to see if it's a communication problem.

[soundu]

Originally Posted by FLYRITE

I recently bought a 2008 Ford Taurus with 91000 miles. When I am going to overtake on the highway, the tach needle goes up to around 3000 rpm and stops, but the car keeps going faster. The closest to this I have ever seen is the cvt in the Ford Escape. Is this transmission half cvt? Where can I get detailed information about it?

Here is what is probably happening. Your mashing the throttle and the
car is down shifting. When this happens, your TC is unlocking so
there is no direct mechanical connection between the engine and
transmission. there is mechanical slip in the TC. eventually, it
catches up and it will lock back up (and probably upshift shift back into OD)

If your in doubt, take it to a trannie shop and have the factory PID codes
scanned for issues.

[FLYRITE]

Nope, not normal. RPM needs to change with speed and gear shifts. Try ETM like I suggested to see if it's a communication problem.

Tried it. The digital tach stops just like the analog tach.

If your in doubt, take it to a trannie shop and have the factory PID codes
scanned for issues.

I did do that and they said there was no codes, but this was for a shift flare problem I am having.

[behlinla]

Originally Posted by FLYRITE

Tried it. The digital tach stops just like the analog tach.

Okay, as you noticed the last digit is usually a blur when the tach readout is working normally. When the digital readout "stopped" did the display completely freeze (absolutely no digit changes) or did it keep updating and the number just stayed around 3000 RPM with the normal fluctuation? Or was it reading exactly 3000 RPM even?

[FLYRITE]

Originally Posted by behlinla

Okay, as you noticed the last digit is usually a blur when the tach readout is working normally. When the digital readout "stopped" did the display completely freeze (absolutely no digit changes) or did it keep updating and the number just stayed around 3000 RPM with the normal fluctuation? Or was it reading exactly 3000 RPM even?

No, it fluctuates between 10 to 40 rpm, just like when the engine is idling.

[behlinla]

Okay, if the display had normal fluctuation then I would say your transmission was slipping.