Hi and thanx to all who respond.
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I have a 1994 Explorer that has started acting up. When I turn the key to the on position, this cylinder clicks repeatedly 5 to 10 times in a second or two and then it stops. Sounds exactly like a relay closing and opening over and over again. This behavior might be normal, however I just noticed it because my explorer all of a sudden runs very rough. When idling, the RPM's vary between 600 to 1400 constantly up and down for as long as the engine is running and sometimes, it will die. Runs so rough, it cannot be driven.
Also worthy of mention is the fact that my fuel pump does not run every time I turn the key to the on position. I would say it only runs about 50% of the time with it sometimes running 5 out of 5 times and other times it not running 5 out of 5 times. Also, when the fuel pump does not run, my Explorer will not start.
Is the fuel pump supposed to run every time I turn the key to the on position? Or only if the pressure is low?
At any rate, any help is greatly appreciated.
Thanx in advance.
jg