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86-95 Trucks & 4Runners 2nd/3rd gen pickups, and 1st/2nd gen 4Runners with IFS

Overheating mystery

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Old Jul 6, 2010 | 05:03 PM
  #21  
mt_goat's Avatar
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Joined: Nov 2002
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From: Oklahoma State
Originally Posted by Innervision
... Top rad hose is soft and really hot. Could it be collapsing with increased speed of water pump?
No, not the top hose. The bottom hose is the return line, it could collapse if it's a cheap hose.
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Old Jul 7, 2010 | 05:52 AM
  #22  
mt_goat's Avatar
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From: Oklahoma State
This little wire coil is used in some cheap radiator return hoses to prevent collapsing.

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Old Jul 16, 2010 | 08:24 AM
  #23  
Innervision's Avatar
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Joined: Jul 2006
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From: Tolland, CT
thanks, Mt goat.

I think I found my issue.

The radiator is only a year and a half old but it had pretty significant mineral deposits on the inside. I swaped out the radiator and the thermastat. The thermastat was also covered in minerals, felt like sand paper covering the radiator side. Hopefully this will fix my rising temps on hills. I think the mineral deposits were limiting heat transfer.

now I need to replace the freeze plug behind the starter (small leak there) and it will be ready to get back on the road.
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Old Dec 7, 2010 | 05:10 AM
  #24  
Liveforocks's Avatar
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The previous owner installed the headgaskets backwards. I bent a 1/8 steel rod into a J and shoved it up the thermostat housing and poked a hole through the headgasket. Not a ideal fix but it worked
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Old Dec 7, 2010 | 06:11 AM
  #25  
Bojangles's Avatar
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Joined: Oct 2009
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From: Sc
Bahahaha!!!!!
Well buddie, looks like you found your issue .
Head gasket kit from Autozone and it looks like your good to go.
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