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What is trouble code p1120 - p0120 and the Throttle Position Sensor - TPS - Windstar?

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βˆ™ 2009-12-18 03:04:03

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The trouble code #P1120 means:Throttle motor position sensor 1-Circuit malfunction Major auto parts chain told me my TSP (Throttle position sensor) was bad due to the Check Engine Llight (CEL) being lit up - a P1120 DTC.

$40 and 10 minutes to replace - ((_#*&$ light came right back. A few days ago, after doing some more reading & investigating of my own, I bought a $4 can of throttle body spray cleaner - used 1/2 the can on my 98 Sable - voila! CEL is gone again! Since this sensor is located at the top of the engine, it is very likely you will be able to replace it yourself.

Ask at auto parts store to see a diagram of the part's location. The throttle position sensor, TPS, is mounted on the front of the throttle body with 2 screws, and has a 3 wire connector going into it.

The throttle body is the metal unit the air filter housing connects to on the left-side, and also has the gas pedal cables going into it.

Simply disconnect the wire harness, remove the 2 screws (tighten a bit before unscrewing to break them loose) - reverse steps to install.

Note that Autozone.com has detailed testing procedures that appear easy enough to confirm if the TPS requires replacement. See "Related Links" below. It is attached with 2 screws to the front of the throttle-body - top side of the engine. Rather small with a 2 wire connector going to it.

Easiest part to access where the air duct attaches to the throttle body. I believe the voltage is supposed to be 0.5 closed and 5.0 open once that is obtained use a OBD scan tool to clear the code or disconnect the battery long enough to reset it however if you disconnect the battery it will take 40 to 100 miles of travel on the road to pick up all the sensors again and this can sometimes be a head ache TPS IS THROTTLE POSITION SENSOR

2009-12-18 03:04:03
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