Question about 2001 Toyota Highlander

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2001 Toyota Highlander Coolant path clog up for coolant heat storage system

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 104 Answers

SOURCE: 1997 Toyota Avalon over-heating problem due to low coolant level

Could be buring coolant from headgasket leak. thats the only other way coolant can leave your engine besides a leak.

Side note:
I strongly reccomend in the future not to use ne kind of coolant stop-leak stuff. you have small passages coolant needs to go through and that stuff also cloggs up those areas. alot of people dont think that far ahead. so alittle info for the future for you. it also cloggs up your heatercore and radiator. and will cause faster corrosion in those areas.

Posted on Apr 28, 2009

morse008
  • 1111 Answers

SOURCE: 2001 Highlander, 100,000 mile service

try Midas or call around to garages

Posted on Aug 24, 2009

  • 1129 Answers

SOURCE: toyota previa over heating

It could be the thermostat replac eto be sure but also check to make sure the cooling fan is coming on periodically observe engine idling after the motor warms up the fan should come on after 5 - 10 minutes idling if not replace either the fan relay or the coolant fan switch

Posted on Sep 18, 2009

  • 318 Answers

SOURCE: oil burning in my 2001 toyota highlander 84000 miles. bad rings.

You need to talk to a dealer.

Posted on Oct 27, 2009

  • 714 Answers

SOURCE: Heater doesn't put out heat.

could be your temp control actuator which is under the dash

Posted on Jan 31, 2010

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2002 turbo hilux manual keeps over heating


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the FSm covers all this, 100% in chapter, HVAC
or alldata.com log in and read.

hot water hot. good. that the core coolant hose/pipes
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Feb 14, 2011 | 2005 Toyota Highlander

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My toyota highlander heats up past red, goes back to midpoint within 30 seconds?


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Vw golf 2001. coolant system not working


Your most probable cause for this is because your water valve needs replacement or repairing. Not all cars have a water valve that brings the heated coolant into the heater core unit.

Essentially, the heated coolant is brought from the engine block directly, into a mini radiator that has a fan to blow heated air into your vehicles cabin.

If that valve were clogged, or the switch itself to open up the water valve that blocks the coolant from going into the heater core unit, then you wont be able to get heat from the vents.

ALSO, another reason why your car might also be overheating as well, is you need to check your coolant levels as well to make sure it is fully filled up, if it is, then your thermostat might also need replacement.

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2001 Toyota highlander(4cyl),turns over,won't start afer few spins.Then,it will finally start.Has always started(fired)immediately- pumped gas a couple of times and it will finally start-runs fine-any...


Your cold start valve is not opening to assist the firing. It function is to provide extra fuel to ignite the all combustion chambers easily. When the engine doesn't have this extra fuel from the cold start valve, it will take a few times to get it going. The cold start valve is turned on at the time of starting only if the ECM get the signal from coolant temperature sensor saying it is at a preset level. When the sensor is bad, it can give a wrong value so ECM think that temperature is hot so not turning the Cold start valve. Replace this coolant sensor first, then the next thing is to check out the cold start valve.

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I can't solve your problem, but since so many people who own a highlander are have the same types of problems, it seems to me that Toyota should be checking into this problem.

What do you think?
I am going to call my dealer today.

May 22, 2008 | 2003 Toyota Highlander

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