Overheating or faulty guage??
#1
Overheating or faulty guage??
Hey new member/owner here, 1986 4runner 22re,
My dilemma is that right after my truck gets to operating temp it seems that
it may be starting to overheat BUT I'm not sure because the gauges have
been acting funny; bouncing and not working intermittently. I've been turning
the heat on for a minute just to be on the safe side and it goes back to normal and doesn't happen
again with the heat turned back off. So does this
sound like it could be an mechanical problem, maybe a bad thermostat? On
the other side of the coin, what is it that causes the gauges to lose
power and/or bounce around?
My dilemma is that right after my truck gets to operating temp it seems that
it may be starting to overheat BUT I'm not sure because the gauges have
been acting funny; bouncing and not working intermittently. I've been turning
the heat on for a minute just to be on the safe side and it goes back to normal and doesn't happen
again with the heat turned back off. So does this
sound like it could be an mechanical problem, maybe a bad thermostat? On
the other side of the coin, what is it that causes the gauges to lose
power and/or bounce around?
#2
Contributing Member
it almost sounds like an air pocket trapped in the cooling system; might want to do a propper burp of the system
also, to rule it out, it's advisable to get a thermostat from a dealership, becuase they retail the upgraded one with a bypass valve in it that fixes some overheating issues
welcome to YotaTech!
also, to rule it out, it's advisable to get a thermostat from a dealership, becuase they retail the upgraded one with a bypass valve in it that fixes some overheating issues
welcome to YotaTech!
#4
Contributing Member
$10 at most for the thermostat and gasket
$5 in antifreeze
a couple tooks in your garage
about 30 minuts of your time
no don't take it somewhere, you can do it yourself in an afternoon
search for a link to the FSM here on the site and it'll give you a step-by-step process; I wouldn't be surprised if there's even a write up of the replacement here on the forums
$5 in antifreeze
a couple tooks in your garage
about 30 minuts of your time
no don't take it somewhere, you can do it yourself in an afternoon
search for a link to the FSM here on the site and it'll give you a step-by-step process; I wouldn't be surprised if there's even a write up of the replacement here on the forums
Last edited by iamsuperbleeder; 04-23-2010 at 06:43 PM.
#5
Thanks for the reply. I was thinking the same thing about the air in the coolant. I started
it up with the radiator cap off and waited for bubbles but they never came. Does anyone
have insight on the bouncing gauges?
it up with the radiator cap off and waited for bubbles but they never came. Does anyone
have insight on the bouncing gauges?
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