External Temp wrong - climate control won't work -- could use your ideas!
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External Temp wrong - climate control won't work -- could use your ideas!
My 2005 Lariat F350 with auto climate control has real problems figuring out the temp outside. The display on the climate control usually reads 10 to 30 degrees low and refuses to change. This seems to cause AC problems (I can set the desired temp to 60, but the external shows 68 -- when it is really 90+ -- the AC then seems to mix heat since the climate control computer believes little AC is needed) . On the rare occasion that the system is working, the AC is great.
We did put a scan tool on it when it was malfunctioning and were able to read the external sensor (it was about right). Also, the scan tool seemed to reset the temp display and all of a sudden it worked (for a few hours).
So far, we have had 2 external temp sensors, one new climate control computer and head, and recharged the entire system. No change. Dealer is working hard, but at a loss. Does anyone have any other ideas?
Many thanks!
We did put a scan tool on it when it was malfunctioning and were able to read the external sensor (it was about right). Also, the scan tool seemed to reset the temp display and all of a sudden it worked (for a few hours).
So far, we have had 2 external temp sensors, one new climate control computer and head, and recharged the entire system. No change. Dealer is working hard, but at a loss. Does anyone have any other ideas?
Many thanks!
Posting Guru
Joined: Jan 2004
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From: Monroe, MI
Cody,
I would have done exactly what you say the dealer has done. How long have you had the truck? Has this been an issue from the beginning or something that popped up after a period of time? Was there any service done to the truck right before this happened? Had you made any changes to the truck before this happened?
I would have done exactly what you say the dealer has done. How long have you had the truck? Has this been an issue from the beginning or something that popped up after a period of time? Was there any service done to the truck right before this happened? Had you made any changes to the truck before this happened?
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Wiingnut:
Thanks for your response. I have had the truck since May, 05 and this has been an issue from the start. In South Dakota, we do not get too much hot weather, so I did not catch the A/C issue until June. I have made zero changes to the truck and now have about 8,500 miles on it. Only services have been oil changes, a reflash to address a transmission downshift issue and the work on the A/C issue. There was no change to the A/C after the reflash.
Thanks again.
Thanks for your response. I have had the truck since May, 05 and this has been an issue from the start. In South Dakota, we do not get too much hot weather, so I did not catch the A/C issue until June. I have made zero changes to the truck and now have about 8,500 miles on it. Only services have been oil changes, a reflash to address a transmission downshift issue and the work on the A/C issue. There was no change to the A/C after the reflash.
Thanks again.
Posting Guru
Joined: Jan 2004
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From: Monroe, MI
Cody,
My wife had an issue, close but not exactly as you described with an 05 explorer. It has a dual air control (his/her). It would come out the right temp on mine but her side was HOT! They found an accuator motor was bad for the blend door, the blend door was replaced, and found a pinched vacuum line. Over 2 tries. Has been fine ever since. See if this helps. And please let us know what they find when it is corrected. GOOD LUCK!!! Have them also check the climate control harness for maybe a possible ground.
My wife had an issue, close but not exactly as you described with an 05 explorer. It has a dual air control (his/her). It would come out the right temp on mine but her side was HOT! They found an accuator motor was bad for the blend door, the blend door was replaced, and found a pinched vacuum line. Over 2 tries. Has been fine ever since. See if this helps. And please let us know what they find when it is corrected. GOOD LUCK!!! Have them also check the climate control harness for maybe a possible ground.
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