The dreaded no heat question.
Thread Starter
Joined: Feb 2018
Posts: 10
The dreaded no heat question.
Hello everyone! First time poster looking for your help
First off is lucky enough to have a 99 Honda Accord EX v6 with 220k on her
- I have the automatic climate control feature. A couple weeks ago if it was set to 90 degrees I would have heat. If I dropped it below 90 I would lose heat.
- Now I have absolutely no heat.
- I have two hot hoses into the heater core but does not seem to be moving by the cable. I took the cable off and physically opened it myself and still no heat.
- no over heating or under heating for normal operational temp.
- vents seem to change when selecting. They might get stuck here and there.
Thanks for any help.
First off is lucky enough to have a 99 Honda Accord EX v6 with 220k on her
- I have the automatic climate control feature. A couple weeks ago if it was set to 90 degrees I would have heat. If I dropped it below 90 I would lose heat.
- Now I have absolutely no heat.
- I have two hot hoses into the heater core but does not seem to be moving by the cable. I took the cable off and physically opened it myself and still no heat.
- no over heating or under heating for normal operational temp.
- vents seem to change when selecting. They might get stuck here and there.
Thanks for any help.
Super Moderator : And A Texan
Joined: Feb 2007
Posts: 9,652
From: Katy, TX
Suggest checking for DTC's. See attached procedure.
A frequent cause of no heat or no cooling is a failed air mix motor. Check whether air mix door is moving when temp control is changed from max temp to min temp.
good luck
A frequent cause of no heat or no cooling is a failed air mix motor. Check whether air mix door is moving when temp control is changed from max temp to min temp.
good luck
Thread Starter
Joined: Feb 2018
Posts: 10
Super Moderator
Joined: Sep 2006
Posts: 16,328
From: Houston, TX
Below is the thread to get HVAC codes from your car.
https://www.hondaaccordforum.com/for...05/#post371340
https://www.hondaaccordforum.com/for...05/#post371340
Thread Starter
Joined: Feb 2018
Posts: 10
Ok - Ran the test and got D,KL
D - short in the outside air temp sensor circuit
L - an open or short in the mode control motor corcuit
K - A problem in the air mix control linkage, door or motor
going to google now. Any of these in common?
D - short in the outside air temp sensor circuit
L - an open or short in the mode control motor corcuit
K - A problem in the air mix control linkage, door or motor
going to google now. Any of these in common?
Thread Starter
Joined: Feb 2018
Posts: 10
Listing two motors could have went? Just seems odd they both went at same time.
And with the cost of that. I would prefer to be sure before spending money..
- What steps can I take next given the codes I received
thanks
And with the cost of that. I would prefer to be sure before spending money..
- What steps can I take next given the codes I received
thanks
Last edited by Wmertz63; Feb 21, 2018 at 09:32 AM.