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A 1997 ford escort is making a clicking noise and the oil light keeps on coming on yet when the ac is turned on the oil light goes away and how much would it cost you is it the valves?
Wiki User
∙ 16y ago
The valve-train will certainly make a noisy clicking/tapping sound if there is not sufficient oil pressure to keep everything bathed in oil. The fact that the oil light keeps coming on makes the low oil pressure scenario seem likely. Not sure what the AC would have to do with it. If the light is coming on only when idling, it could be that the AC being switched on increases the engine rpm enough to boost the oil pressure to satisfy the oil pressure switch and turn the light off.
It could be that you're extremely low on oil, or there is something wrong with the oil pump, filter, or oil passages. Or worse, a crack in the block, head, or a bad head gasket, which is causing an internal oil leak (causing the oil flow back to the pan without reaching its full destination).
BTW, operation with low/no oil pressure is EXTREMELY destructive to your engine!!! Don't drive it 'till it's fixed, or you'll be needing a new car/engine in no time flat!
Wiki User
∙ 16y ago
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