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SuperDave
SuperDave, ASE Certified Technician
Category: Toyota
Satisfied Customers: 1491
Experience:  over 16 years experience
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Toyota 4 Runner: Have a 92 Toyota 4 Runner with overheating

Customer Question

Have a 92 Toyota 4 Runner with overheating problems
Submitted: 1 year ago.
Category: Toyota
Expert:  SuperDave replied 1 year ago.
Thank you for using Just Answer.I will do my best to answer your question.It doesn't sound like the coolant is circulating how it should.The impellers on the water pump could be worn causing this.I would remove the water pump and inspect it.
Customer: replied 1 year ago.
I suppose that is possible but in this case the water pump was replace about a year ago when the timing belt was replaced. In addition to the pump do you believe the block passages could have corrosion that would impede circulation? If so can the block be flushed and if so how. thanks
Expert:  SuperDave replied 1 year ago.
First I would use a block tester to make sure there are no exhaust gases in the cooling system.I have ran into the same problem before after taking heads to the machine shop.The heads were not machined right.
Expert:  SuperDave replied 1 year ago.
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Thank you!David

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