The wrench warning sign comes while in motion and the performance changes, vehicle goes on laboured movement and jerks if in traffic. However once i turn the engine off and on again, the sign goes off and its as if it never happened.
Problem is this is happening more frequently now!!!
I bought the car from a Ford dealer used 2 years ago. It was a one owner vehicle. This problem started about six months after purchase and has been continuing since and over the last 3 months has been more and more frequent. Car will suddenly display the yellow box and wrench on the status screen in dash board and if cruise is set, the cruise will turn off. It will start lunging, then stop completely. After several tries I can finally get it started. Then it will start running, stop, start and will only rev to low rpm's and move very slowly. The safety issue occurs when it completely stops running suddenly while traveling at 40-70 mph. The power steering not longer works and the brakes are very hard to use.
Update from Jun 15, 2016: This problem is occurring 3-4 times a week
Update from Dec 5, 2016: I ordered a new throttle position sensor from Auto Zone and installed it. The part number was different but the employee at Auto Zone said it should work. It did NOT. I returned it to Auto Zone and then took the original part and cleaned all of the contacts with light sanding. The contacts are locate in a plastic housing so I had to use a small metal rod and wrapped fine sand paper on the end to be able to get to the contacts. Re-installed the sensor and the car has been running great ever sense. No skips or lunging and no wrench light.
- rsargent,
Prattville, AL, US
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Idles up to 4 or 5 & both check engine and wrench lights are on.
- Michelle R., Fort Worth, TX, US