teeds01

I have a 2002 Toyota Sequoia Limited that is overheating when it's running slow or idling. It starts to heat up slowly - not overheating right away. My mechanic is tell me it's a failing head gasket, but he didn't run any diagnostics. Any input?

rworegon

It could be as simple as needing a new radiator cap. How many miles since the water pump/thermostat last changed? Coolant level ok? Any external leaks?

Do you have any of the classic head gasket failure symptoms: billowing white exhaust, boiling coolant escaping the radiator/overflow, oil in radiator, coolant in oil, bad idle, etc.?

Also, do a search here for testing the fan clutch.

ZUK

iTrader: (1)

Does kinda sound like the fan clutch if it's happening at slow speed.

wyndes@earthlink.net

Isn't it the case that all one had to do is crank car with hood open and see if the fan is running

Alaskan91

I had same problem with 91 4Runner 3.0 I flushed the radiator,and installed a new thermostat,not that this was part of the issue I replaced the hoses as well being as they were a bit thin,and I had the coolant system already drained.I added a decent coolant,hint not the 50/50 type.Problem fixed.This is also a good time to check your belts for cracks,and replace as needed.Good luck out there.