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Controlling Temp in 4Runner Interior #4540301
10/11/17 02:29 PM
10/11/17 02:29 PM
Joined: Sep 2002
Posts: 2,274
VA
Gebo Offline OP
Gebo  Offline OP
Joined: Sep 2002
Posts: 2,274
VA
I have a 2002 4Runner. I have noticed that when I turn the temp know all the way to the coolest position, the fresh air blowing in is no where near as cool as the outside air. I've noticed I can get heated air by just barely moving the know towards the "red" heat zone. Is there some way to make sure when I turn the knob to the coolest setting, I can be assured I am getting the coolest air coming into the interior? Is there some wire or not I could tighten or loosen?


'98 LEX LS400 280K
'00 LEX GS300 195K
'02 4Runner 225K
'05 Lex LS430 85K
'06 Toyota Highlander 145K
'09 Lex IS350 85K
'07 Lex GX470 58K

Re: Controlling Temp in 4Runner Interior [Re: Gebo] #4540318
10/11/17 02:46 PM
10/11/17 02:46 PM
Joined: Aug 2008
Posts: 3,156
USA
Reddy45 Offline
Reddy45  Offline
Joined: Aug 2008
Posts: 3,156
USA
Unless you run the AC, the air coming out of the vents is first picking up heat from the engine/firewall/cowl. This is why it's not as cool as if you just open the window.

Re: Controlling Temp in 4Runner Interior [Re: Gebo] #4540400
10/11/17 04:18 PM
10/11/17 04:18 PM
Joined: Mar 2013
Posts: 4,763
The Midwest
skyactiv Offline
skyactiv  Offline
Joined: Mar 2013
Posts: 4,763
The Midwest
It might need a new heater control valve. Easily diagnosed and cheap to replace on some vehicles, but not all.


Wife: 15' Audi A4 quattro 6 speed manual
Me: 13' VW GTI 3 door 6 speed manual
Re: Controlling Temp in 4Runner Interior [Re: Gebo] #4540430
10/11/17 05:10 PM
10/11/17 05:10 PM
Joined: Dec 2006
Posts: 911
midwest
JamesBond Offline
JamesBond  Offline
Joined: Dec 2006
Posts: 911
midwest
Some toyotas have a cable operated heater control valve under the hood that controls the flow of coolant to the heater core. Over the years the cable can stretch and not fully close (or open) You adjust the cable by adjusting both ends or if you're lazy like me you can adjust just one side and get it to 100% closed (cool) and 95% open (heat).

This happened on my Honda, a simple adjustment under the hood made the ac much colder.

Re: Controlling Temp in 4Runner Interior [Re: Gebo] #4540470
10/11/17 06:01 PM
10/11/17 06:01 PM
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Merkava_4 Offline
Merkava_4  Offline
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Originally Posted By: Gebo
I have a 2002 4Runner. I have noticed that when I turn the temp know all the way to the coolest position, the fresh air blowing in is no where near as cool as the outside air. I've noticed I can get heated air by just barely moving the know towards the "red" heat zone. Is there some way to make sure when I turn the knob to the coolest setting, I can be assured I am getting the coolest air coming into the interior? Is there some wire or not I could tighten or loosen?


What is with you and the word know ? grin2

Re: Controlling Temp in 4Runner Interior [Re: Gebo] #4540489
10/11/17 06:25 PM
10/11/17 06:25 PM
Joined: Sep 2002
Posts: 2,274
VA
Gebo Offline OP
Gebo  Offline OP
Joined: Sep 2002
Posts: 2,274
VA
The "b" and the "w" are so close on the keyboard. You knob what I mean?


'98 LEX LS400 280K
'00 LEX GS300 195K
'02 4Runner 225K
'05 Lex LS430 85K
'06 Toyota Highlander 145K
'09 Lex IS350 85K
'07 Lex GX470 58K

Re: Controlling Temp in 4Runner Interior [Re: Gebo] #4540496
10/11/17 06:30 PM
10/11/17 06:30 PM
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Merkava_4 Offline
Merkava_4  Offline
Joined: Jan 2007
Posts: 17,501
Clovis, CA
Originally Posted By: Gebo
The "b" and the "w" are so close on the keyboard. You knob what I mean?


The B and the W are no where near each other! What the heck ? crackmeup

Re: Controlling Temp in 4Runner Interior [Re: Gebo] #4540517
10/11/17 06:49 PM
10/11/17 06:49 PM
Joined: Nov 2016
Posts: 1,278
WI
HoosierJeeper Offline
HoosierJeeper  Offline
Joined: Nov 2016
Posts: 1,278
WI
Is the AC on? If it is, sounds like an AC issue. Would want to check the pressures.

If the AC isn't on, sounds normal.


15 Jeep KL Limited V6: Formula Shell 5W20
07 LR3 SE V8: Maxlife 5W30
05 Jeep KJ Limited: PHM 5W30
96 Jeep XJ Country: STP HM 5W30 (winter)

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