Thanks for the wealth of information in this forum. I have read the stickies and looked thru the post and have not found my answer. Here is the problem: AC works great at all speed from low to high & cold air when the car first starts up. Drive it a while operating temp, shut the car off. Next time you drive the AC fan may or may not come on. The compressor is engaged but no fan. I replaced the blower regulator about 18 months ago. This is an intermittent problem. Performed the AC Diagnostic thru the climate control here is the results:
1 - 26
2 - 38
3 - 07
4 - 06
5 - 50
6 - 89
7 - 15
8 - 59
Error code: E61-459
I am guessing that it might be the evaporator temp sensor, but I want to make sure before I purchase from Autohausaz.com
My car has 198450 miles and is strong.
Thanks,
Ed
Good morning, my take on the issues is first your data is in metric not English units. That is corroborated by the fault 1459, K1 CAN line faulty.
If K1 or K2 is faulty the AC unit does not receive the correct messages from the instrument cluster----such as C to F conversion, coolant temp, refrig pressure----all needed to have the AC function as designed.
Now, in light of that look at the data----the two suspicious pieces are No 8 refrig temp--59C and No 5 evap temp 50C. Remember that the data is metric( C ) therefore 50C for the evap temp is high as it should be 13 to 15 C. No 8 refrig temp is 50C or 122 F but at that temp the refrig pressure(No 7) should be 140 F---they don't match, meaning at any given temp there is a corresponding pressure. GOD made that not me. It's a constant on our planet.
So big deal---- the deal is that we don't know if the evap tem sensor is good/bad or it's reading the correct temp----you can "OL" the thing and just go out an purchase a new sensor, but I would not do that-----I would first test the sensor to see if it was good thermally. The test is at 10,20,30 and 45degrees C the resistance should be 5 to 5.8 K ohms, 3 to 3.6 K ohms, 2 to 2.3 K ohms and 1 to 1.25 K ohms----------put the sensor in the fridge with a thermometer and run the test.
You also need to resolve the K2 issue. because the AC unit is not getting the correct refrig pressure.---That typically is corrosion or a loose wire at the AC unit or instrument cluster----not easy to find.
Second, there is a AC condenser aux fan mounted in the engine compartment and an AC blower with regulator mounted inside the car under the passenger side dash-------two very different components preforming very different functions. In any event I hope you mean the AC blower.
Now with the AC blower-----so you press auto and the fan does not come on----what if you keep pressing the fan speed does it go on then??
In the final-------because K1 and K2 problems are not easy DIY issues. I would not buy or test a thing untill I went to an AC person and had them put gauges on the car to really determine the correct high and low pressures. Once that is known I have a good starting point to determine whetehr the evapsensor is good or bad!! Good luck!!
