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1994 Jeep Cherokee Noise

Tiny
SCHOENBUCHNER
  • MEMBER
  • 1994 JEEP CHEROKEE
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 200,000 MILES
Engine started making a slaping sound. It gets louder at higher RPM?
Tuesday, November 18th, 2008 AT 9:29 AM

3 Replies

Tiny
JAMES W.
  • MECHANIC
  • 2,394 POSTS
With 200K on the engine I would be suspicious of bearings. I would recommend, if you have an oil light, removing the oil pressure sending unit and screwing an oil pressure gauge in its place. Checking actual hot oil pressure at idle. This will give us a clue as to what's going on. If you have a dash oil "gauge", what does it read at hot idle? Please advise.
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Tuesday, November 18th, 2008 AT 11:13 AM
Tiny
SCHOENBUCHNER
  • MEMBER
  • 2 POSTS
Vechicle has 200000 miles, Runs Strong and has good Oil preasure? Noiise seems to be in top or front of engine? Like a slaping sound?
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Tuesday, November 18th, 2008 AT 12:12 PM
Tiny
JAMES W.
  • MECHANIC
  • 2,394 POSTS
Not trying to appear facetious, but I'm not sure what a slapping sound is. If it is coming from the top of the engine, I would guess it is valve rocker slop caused by worn hydraulic lifters. Even though you say the engine runs strong, which is good, at 200K that would be my next culprit. Sounds like the motor has been well maintained, but lifters just plain wear out.
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Tuesday, November 18th, 2008 AT 1:11 PM

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