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Heating issues #4655218
02/03/18 07:40 PM
02/03/18 07:40 PM
Joined: Oct 2008
Posts: 868
MA USA
andrewp1998 Offline OP
andrewp1998  Offline OP
Joined: Oct 2008
Posts: 868
MA USA
I went to my mech last week and he put new t stat( 2nd one) in and all was ok , topped of fluid and checked head gasket( no gasses), no issues for a week. Now its blowing cold air again after I get off the highway or before the highway. I got to check coolant later after it cools down. he bled the system too.

I'm frustrated with this whole thing and its been going on since November!


2001 Honda civic HX vtecE- 5 spd,232k+
Re: Heating issues [Re: andrewp1998] #4655224
02/03/18 07:44 PM
02/03/18 07:44 PM
Joined: Oct 2008
Posts: 868
MA USA
andrewp1998 Offline OP
andrewp1998  Offline OP
Joined: Oct 2008
Posts: 868
MA USA
The lower hose was cold before new stat was put I but got hot after new one was put in?


2001 Honda civic HX vtecE- 5 spd,232k+
Re: Heating issues [Re: andrewp1998] #4655232
02/03/18 07:50 PM
02/03/18 07:50 PM
Joined: Feb 2011
Posts: 1,287
Wishin' I was in Wi
mjk Offline
mjk  Offline
Joined: Feb 2011
Posts: 1,287
Wishin' I was in Wi
Heater core plugged ?

Re: Heating issues [Re: andrewp1998] #4655243
02/03/18 07:58 PM
02/03/18 07:58 PM
Joined: Nov 2016
Posts: 1,283
WI
HoosierJeeper Offline
HoosierJeeper  Offline
Joined: Nov 2016
Posts: 1,283
WI
What's the temp gauge showing?


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)
Re: Heating issues [Re: andrewp1998] #4655252
02/03/18 08:03 PM
02/03/18 08:03 PM
Joined: Oct 2008
Posts: 868
MA USA
andrewp1998 Offline OP
andrewp1998  Offline OP
Joined: Oct 2008
Posts: 868
MA USA
Heater core he said is not plugged but may have to flush it, head gasket was changed last feb, new cap too. temp guage is ok.

Last edited by andrewp1998; 02/03/18 08:09 PM.

2001 Honda civic HX vtecE- 5 spd,232k+
Re: Heating issues [Re: andrewp1998] #4655256
02/03/18 08:08 PM
02/03/18 08:08 PM
Joined: Oct 2008
Posts: 868
MA USA
andrewp1998 Offline OP
andrewp1998  Offline OP
Joined: Oct 2008
Posts: 868
MA USA
Everything is almost new, rad was replaced Nov 2016.

same situation last couple months, 1 week goes by after I add coolant and it has problems again.

Last edited by andrewp1998; 02/03/18 08:11 PM.

2001 Honda civic HX vtecE- 5 spd,232k+
Re: Heating issues [Re: andrewp1998] #4655261
02/03/18 08:14 PM
02/03/18 08:14 PM
Joined: Nov 2016
Posts: 1,283
WI
HoosierJeeper Offline
HoosierJeeper  Offline
Joined: Nov 2016
Posts: 1,283
WI
Does it blow heat in any circumstance?

Here's what I'm thinking...
No heat at all and up to normal engine temp = blend door issues
Heat comes and goes as a result of the engine cooling = tstat issue (use OEM!)


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)
Re: Heating issues [Re: andrewp1998] #4655264
02/03/18 08:18 PM
02/03/18 08:18 PM
Joined: Nov 2008
Posts: 9,293
Phoenix
dishdude Offline
dishdude  Offline
Joined: Nov 2008
Posts: 9,293
Phoenix
Originally Posted By: andrewp1998
Everything is almost new, rad was replaced Nov 2016.

same situation last couple months, 1 week goes by after I add coolant and it has problems again.


If adding coolant fixes it for a week, you have a leak.


2018 Challenger SRT 392 PUP 0w-40 Wix 57899XP
2018 GTI
Re: Heating issues [Re: andrewp1998] #4655266
02/03/18 08:20 PM
02/03/18 08:20 PM
Joined: Sep 2014
Posts: 1,490
Toronto Canada
WobblyElvis Online content
WobblyElvis  Online Content
Joined: Sep 2014
Posts: 1,490
Toronto Canada
Start the car from cold. As it warms up, put your hand on the heater hoses going to the firewall. If they warm up, and you still have no heat, suspect the blend/air mixer door.

Re: Heating issues [Re: andrewp1998] #4655297
02/03/18 08:49 PM
02/03/18 08:49 PM
Joined: Oct 2008
Posts: 868
MA USA
andrewp1998 Offline OP
andrewp1998  Offline OP
Joined: Oct 2008
Posts: 868
MA USA
just checked coolant after 1 hr and 15 mins and level is fine, will check later when its totally cooled down. Tstat is oem


2001 Honda civic HX vtecE- 5 spd,232k+
Re: Heating issues [Re: andrewp1998] #4655300
02/03/18 08:51 PM
02/03/18 08:51 PM
Joined: Nov 2016
Posts: 1,283
WI
HoosierJeeper Offline
HoosierJeeper  Offline
Joined: Nov 2016
Posts: 1,283
WI
Low coolant causes bad heat. So you probably have a leak somewhere.


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)
Re: Heating issues [Re: andrewp1998] #4655309
02/03/18 08:59 PM
02/03/18 08:59 PM
Joined: Jun 2005
Posts: 5,277
North Texas
ARB1977 Offline
ARB1977  Offline
Joined: Jun 2005
Posts: 5,277
North Texas
What about the air mix motor. My wifes 08 CRV has that issue. The air mix motor fixed it.


2015 Tacoma 4.0L 60K (as of 02/23/18)
AMSOIL SS 0W30 / Toyota filter

2018 CRV 1.5L (as of 05/11/18)
Factory fill / Honda filter
Re: Heating issues [Re: ARB1977] #4655311
02/03/18 09:02 PM
02/03/18 09:02 PM
Joined: Oct 2008
Posts: 868
MA USA
andrewp1998 Offline OP
andrewp1998  Offline OP
Joined: Oct 2008
Posts: 868
MA USA
checked!
it works, goes back and forth

Last edited by andrewp1998; 02/03/18 09:03 PM.

2001 Honda civic HX vtecE- 5 spd,232k+
Re: Heating issues [Re: mjk] #4655356
02/03/18 10:01 PM
02/03/18 10:01 PM
Joined: Oct 2006
Posts: 1,883
Oshawa, Ont. Canada
irv Offline
irv  Offline
Joined: Oct 2006
Posts: 1,883
Oshawa, Ont. Canada
Originally Posted By: mjk
Heater core plugged ?


My guess as well. Personally, I'd take it to a rad shop instead of just a garage.


2017 Chevy Impala 3.6 L.
2013 Ram 5.7 L Hemi Bighorn QC 4x4
2008 Chevy Malibu 2.4 L Ecotec
Pennzoil Platinum and/or Pennzoil Ultra Platinum in all 3.
Re: Heating issues [Re: andrewp1998] #4655536
02/04/18 07:37 AM
02/04/18 07:37 AM
Joined: Jan 2005
Posts: 203
midwest
muddawgs Offline
muddawgs  Offline
Joined: Jan 2005
Posts: 203
midwest
Gonna have to do some good investigating and see if the car is getting upto temp and the rad hoses are getting hot and the heater core hoses also. Physically grab those with your hand and see. Sounds like wide open tstat or air pocket in the heater core.

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