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Me temp gauge rises and falls and the oil light comes on when the temp gauge shows hot

Tiny
JMAN656
  • MEMBER
  • 1998 FORD FIVE HUNDRED
  • 20,600 MILES
It started off doing this occasionally and now it is getting more frequently
Sunday, November 13th, 2011 AT 1:23 AM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,709 POSTS
Is the engine actually overheating? Also, when the oil light comes on, do you ever hear knocking or ticking when the oil light comes on?
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Sunday, November 13th, 2011 AT 1:58 AM
Tiny
JMAN656
  • MEMBER
  • 2 POSTS
No to both questions it not overheating and the engine is not knocking or ticking. The temp gauge just rises then falls to normal and the oil gauge shows good pressure but the oil light comes on when the temp gauge is indicating being hot. I have changed the sending unit for the oil pressure and that made no change to the problem.
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Monday, November 14th, 2011 AT 12:57 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,709 POSTS
Did you replace the temp sending unit? It sounds like that is the root of the problem.
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Monday, November 14th, 2011 AT 4:43 AM

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