1999 Mitsubishi Montero over heating

Tiny
REDCOUNTRY
  • MEMBER
  • 1999 MITSUBISHI MONTERO
  • 3.5L
  • V6
  • 4WD
  • AUTOMATIC
When it is driving the temp gauge gos to hot but when it is in idle it is fine I have changed out the thermostat and just changed the clutch plat on the fan but it is still doing it
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Monday, October 19th, 2015 AT 5:06 PM

7 Replies

Tiny
JACOBANDNICKOLAS
  • EXPERT
Did you try flushing the cooling system? Are there any other issues associated with this problem? Is the engine running properly? Any excessive white smoke from the exhaust? Is the check engine light coming on?

Interestingly, I worked on one of these this Saturday. Customer stated overheating and shaking. Identified two bad coil packs, replaced, and it was fine.

Let me know as much as you can.
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Monday, October 19th, 2015 AT 6:11 PM
Tiny
REDCOUNTRY
  • MEMBER
Its not shaking and the no check engine light the head lights do britin and dim when we hit the gas and I did flush it
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Monday, October 19th, 2015 AT 6:20 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Okay, the first thing I need you to do is this. Since the check engine light is on, it needs taken to have the trouble codes read. Most parts stores will do it for free. Have that done first. Next, check the battery terminals to make sure they are clean and tight. It concerns me that the lights brighten when you hit the gas. There could be a poor connection, a weak battery, a bad alternator, regulator. And yes, anytime there is an electrical issue, it can cause all kinds of things to happen. Are you certain that the engine is actually overheating? It could be a false signal due to something electrical like overcharging?

While you are at the parts store having the computer scanned, have them load test the battery and check the charging system. I want to know if there is a problem there too.
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Monday, October 19th, 2015 AT 6:33 PM
Tiny
REDCOUNTRY
  • MEMBER
The check engine is not on
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Monday, October 19th, 2015 AT 6:39 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Sorry, I read it wrong. When it indicates overheating, does the coolant boil over or can you hear it boiling in the engine?
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Monday, October 19th, 2015 AT 6:45 PM
Tiny
REDCOUNTRY
  • MEMBER
Ill have to look and get back up with u tommrrow
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Monday, October 19th, 2015 AT 6:47 PM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Let me know. It could be a bad sensor.
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Monday, October 19th, 2015 AT 7:10 PM

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