There isn't a modulator valve on the 1998 Windstar. Its all electronics these days.
What you need to look for is the Range Sensor that is bolted down on top of the transmission, just under the air breather assembly. You can see the black sensor when you open the hood just in front of the drivers side.
I had just replaced this due to the transmission slipping out of gear while doing 50-60 MPH. Normally doing this speed, the RPM would be at 2000 RPM. When the transmission slips, the RPM shoots up to 3000 RPM and the Van goes out of high gear and looses power to the wheels.
The Range Sensor for a 3.8 Litre is Part Number F5DZ-7F293-BA. It's the flat black sensor with an electrical wire harness connection. It takes approx.1/2 hour to replace. Very easy installation and very cheap $50.00 Cdn to replace. Good luck and hope it works. Jim
There isn't a modulator valve on the 1998 Windstar. Its all electonics these days. What you need to look for, is the Range Sensor that is bolted down on top of the Transmission, just under the Air Breather assembly. You can see the black sensor when you open the hood just in front of the drivers side. I had just replaced this due to the transmission slipping out of gear while doing 50-60 MPH. Normally doing this speed, the RPM would be at 2000 RPM. When the tranmission slips, the RPM shoots up to 3000 RPM and the Van goes out of high gear and looses power. The Range Sensor for a 3.8 Litre is Part Number F5DZ-7F293-BA. It's the flat black sensor with an electrical wire harness connection. It takes approx.1/2 hour to replace. Very easy installation and very cheap $50.00 Cdn to replace.
Trs is transmisson range sensor-(neutral safty switch)
If the Ford-150 On-board diagnostics (ODB) is rendered with an error code that reads P0705 usually means the transmission range sensor (TRS) has expired. Remove the old TRS and replace it with a new one.
I'm not familiar with a 'shift position sensor', but think it might be actually referring to the neutral start switch, nowadays known as the transmission range sensor.If that's the case, see "Related Questions" below for more
You have to first remove the transmission oil pan and the valve body. The Range sensor is relatively easy after that.
Trouble code P0708 means:Transmission range sensor circuit high input
Carefully, and with a lot of frustration.
No, the range sensor reads what gear or "range" you have shifted into.A speed sensor reads the speed of an item.No, the range sensor reads what gear or "range" you have shifted into.A speed sensor reads the speed of an item.
Strange as it sounds, check the transmission range sensor / neutral safety switch.See "Related Questions" below for more
Trouble code P0191 means: Fuel Rail Pressure Sensor Range/Performance Replace the sensor
What is trans range sensor do for a car?
A couple more suspects...Check the shift interlock fuse - #10(?)Neutral start switch/Transmission Range Sensor?