SOURCE: idles up and down about 500 rpm
I had the same problem and it turned out to be cylinder one wasn't firing correctly (bad plugs). It could be any cylinder but mine was number one. I replaced the plug and it's fine now.
SOURCE: 1998 Mercury Tracer. Car runs
Inline gas filter or the intank fuel pump screen is clogged with debris
SOURCE: Code reader knock sensor where is it located
According to the Haynes manual it is under the intake manifold, Upper and lower intake manifolds must be removed for access. If you go to Auto Zone, they have the sensor and can give you the step by step instructions to replacing the knock sensor with common tools. Good luck and hope this help.
SOURCE: 2002 Ford Escape V6. Oil indicator light on, but pressure holds.
My 2002 Ford Escape had exactly the same problem as described. Dealer replace oil pressure sending unit (oil pressure switch) and problem still existed while leaving dealer about 3 miles away. I took the car back to the dealer again in two days and the oil pressure light kept of blinking sporatically all the way to the dealer. Dealer checked connections and they drove the car around and the oil pressure light never came on. I picked the car up from the dealer and I've had no problems with the oil pressure light flashing. I wonder if there is a microprocesser in the oil pressure sending unit which has to be given some time to be recalibrated to the cars main computer module?
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