I recently purchased a 91 Ford Explorer 4WD 5 sp and I am really enjoying the vehicle but it is giving me some troubles. I recently replaced the radiator myself and had a mechanic replace the front seal to fix some major coolant leakage. About one week after this was complete, the car has developed a ticking noise that is 1) accleration dependent (ie, the ticking is faster as the car speeds up), 2) not constant, and 3) is sometimes a single tick-tick-tick and at other times is a double tick (almost overlapping). It does not stop after the engine warms up, but like I say it comes and goes.
The previous owner used Mobile 1 synthetic oil. I have a bad feeling that the mechanic I went to for the front seal repair did not use synthetic oil. Could this be the cause? What could this switch do?
Any adivse as to what to look would be most appreciated.
