Vehicle Speed Sensor

THRESHER

MEMBER
FORD TAURUS

My daughter was driving my 1994 Taurus (3.8L V6 128k) at highway speed when she reports the engine ran erratically, then suddenly stopped running. She coasted to a stop and the engine would not start. The car will crank, and I can smell the presence of gas, and the plug wires trigger a timming light. I perfomed a KOEO code test and got a code #452 (No input from Vehicle Speed Sensor). Could this kill the engine and be the problem?

3 Replies

2CARPRO JACK

MECHANIC
11,533 POSTS

I dont think I have ever seen a VSS kill an engine, mostly has to do with trans operation. You have good spark at the plug wires and fuel. Have you pulled a plug to see if they are wet with fuel or dry?

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Tuesday, October 23rd, 2007 AT 8:03 AM

RICHARDDORROUGH

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On my 1998 Taurus the VSS and the Crank Sensor are linked. The electrical line runs down from the top of the motor and Ys with one end going to the VSS and one to the Crank sensor. I just replaced the VSS because of the usual symptoms. Tranny would not shift and no speedometer and odometer. Changed the VSS and off I went. The VSS was not shorted out but seized up. I started the car with the VSS disconnected. The trouble listed sounds like crank sensor. So my question is if the VSS was shorted would it cause a short in the line going to the crank sensor and shut down the crank sensor which would cause the symptoms as described?Are the sensors linked electrically? Should he pull the connector off the VSS and see if the car starts to check it out.

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Tuesday, October 23rd, 2007 AT 8:29 PM

2CARPRO JACK