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2000 Mustang trans. problems. VSS, NSS, trans control solenoid?

My wifes 2000 Mustang automatic, recently began having trans. problems... again.  It will not engage in reverse unless you give it throttle, but it does'nt seem to be slipping,  When decelerating, i.e. letting off the throttle, it seems to be mis-shifting i.e. jumping.  When accelerating in forward everything seems to be fine.  Also, the engine seems to get hot quickly, tho the temp gauge reads fine, and seems to be working.  I have done some research, and it seems the most likely culprits would be the transmission control solenoid, the neutral safety switch, or the vehical speed sensor.  Does this car acctually have a physical linkage, or is it all electonic?  Can I have it dyno'd at anyplace that has a dyno computer, or do I need to go to a ford dealership?  Thanks ahead of time for your reply, money is an issue, so if someone can help it would be much appreciated.

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If your engine is getting hot, check your radiator for transmission fluid; the radiator has a small heat exchanger that cools the transmission fluid it is located inside the radiator bottom; the transmission lines attach there; also, the leak into the radiator of transmission fluid can "starve" the transmission causing delay in shifting, slipping and, more throttle being needed to engage and, shift.

Posted on Apr 09, 2010

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2000 Nissan Sentra Transmission


Hi....
if your car get a VSS code the Transmission control module.
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If you replaced the VSS sensor allready.
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Remove the Connector and pull the wires a little each by each one.
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Here's an illustration:


ghost45_54.jpg

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if this helps, please rate as fixya. thanks.

Vehicle Speed Sensor The vehicle speed sensor (VSS) (Figure 43) is a variable reluctance or Hall-effect sensor that generates a waveform with a frequency that is proportional to the speed of the vehicle. If the vehicle is moving at a relatively low velocity, the sensor produces a signal with a low frequency. As the vehicle velocity increases, the sensor generates a signal with a higher frequency. The PCM uses the frequency signal generated by the VSS (and other inputs) to control such parameters as fuel injection, ignition control, transmission/transaxle shift scheduling and torque converter clutch scheduling.


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For the 4R70W trans vehicles

Vehicle Speed Sensor (VSS)

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