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2000 Jeep Cherokee overheats

Tiny
JAMES2012
  • MEMBER
  • 2000 JEEP CHEROKEE
Replaced water pump, thermostat, radiator hoses and cap but it still overheats and now it is smoking somewhere near bottom of valve cover and exhaust manifold
Sunday, January 1st, 2012 AT 12:31 AM

11 Replies

Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
Smoke;maybe some oilleaking and burning due to overheats thin out oil.
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Sunday, January 1st, 2012 AT 12:56 AM
Tiny
JAMES2012
  • MEMBER
  • 10 POSTS
Its not oil it is steam it smells just like the water in the radiator I was thinking maybe a blown head gasket it idles rough im going to get the electric fan working and flush the radiator 1 more time adding strait antifreeze
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Sunday, January 1st, 2012 AT 12:54 PM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
The cooling system needs to be pressure tested to locate any leaks. At this point the previous overheating could have caused a blown head gasket but that would not be visible. You may have a freeze plug leaking or something.
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Sunday, January 1st, 2012 AT 1:29 PM
Tiny
FIXITMR
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What did you mean by strate anti freeze? 100% no water added does NOT cool efficiently.
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Monday, January 2nd, 2012 AT 6:56 AM
Tiny
JAMES2012
  • MEMBER
  • 10 POSTS
Well we didnt put strait anti freeze but it was mostly anaifreeze with some water say about 75/25 because it was running w/o for so long it is staying cool now since the water isnt boiling so easily but we found out the electric fan does not work we hooked it strait to the batt. To test it and it didnt work
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Monday, January 2nd, 2012 AT 11:28 AM
Tiny
JAMES2012
  • MEMBER
  • 10 POSTS
Can you explian how a bad oil pump might cause an engine to overheat? Cause it was getting so hot after about a mile it wouldnt cool down for and hour
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Monday, January 2nd, 2012 AT 11:50 AM
Tiny
FIXITMR
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When did bad oil pump enter picture? And what is meant by bad?
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Monday, January 2nd, 2012 AT 7:26 PM
Tiny
JAMES2012
  • MEMBER
  • 10 POSTS
What are the symptoms of a bad oil pump? Im not sure if it is bad but someone mentioned that it was a possiblity
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Monday, January 2nd, 2012 AT 10:11 PM
Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
Noisy motor, oil warning light on idle rpms, oil pressure gauge low overall, no relation to overheating problem.
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Tuesday, January 3rd, 2012 AT 2:33 AM
Tiny
JAMES2012
  • MEMBER
  • 10 POSTS
Well I think we covered the overheating but it does idle ready high in park or nuetral I was thinking maybe its the idle sensor the engine is noisy
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Wednesday, January 4th, 2012 AT 12:35 PM
Tiny
FIXITMR
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They are noted for valve lifter noises very noisy sometimes. An oil additive like LUCAS oil stabilizer may help. High idle could be idle control valve. I read this on internet.I removed the throttle body and cleaned it thoroughly. I also removed the IAC valve from the throttle body and cleaned it too. It was VERY dirty. You have to be sure when you clean the IAC, that you hold it with the spindle pointed down. If you don't, the cleaner will get inside the IAC motor. You also have to clean the port out that the IAC goes into in the throttle body. I also replaced my TPS at the same time. It now runs/idles perfect.
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Saturday, January 7th, 2012 AT 10:25 AM

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