2001 E320 AC is not working unless driving fast >40mph
#1
2001 E320 AC is not working unless driving fast >40mph
Hi, my 2001 E320's AC is not blowing cold air when driving under 40mph especially, in heavy traffic. However, when driving above 40mph like driving on freeway, the ac starts to blow cold air normally. I did some research and diagnostic tests. Here is what I found:
EB1234- Sun sensor
EB1416- coolant circulation pump
after erasing the codes, they came back after one day of driving.
Additional reading:
morning 75 degree (ambient); engine not running; car sat over night
1. 71
2. 69
3. 82
4. 82
5. 80
6. 182
7. 06 - 09
8. 84
9. 48
10. 6.0
Afternoon 91 degree (ambient); engine running; immediate started after 35 mile-drive.
the range: when first started and gradually increase after 2-3 minutes of engine running.
1. 100 -> 109
2. 109 -> 114
3. 161 -> 173
4. 71 -> 102
5. 73 -> 93
6. 199
7. 14
8. 123
9. 35
10. 2.7
Could someone who is an expert in AC help me diagnose the problem? Thank you.
EB1234- Sun sensor
EB1416- coolant circulation pump
after erasing the codes, they came back after one day of driving.
Additional reading:
morning 75 degree (ambient); engine not running; car sat over night
1. 71
2. 69
3. 82
4. 82
5. 80
6. 182
7. 06 - 09
8. 84
9. 48
10. 6.0
Afternoon 91 degree (ambient); engine running; immediate started after 35 mile-drive.
the range: when first started and gradually increase after 2-3 minutes of engine running.
1. 100 -> 109
2. 109 -> 114
3. 161 -> 173
4. 71 -> 102
5. 73 -> 93
6. 199
7. 14
8. 123
9. 35
10. 2.7
Could someone who is an expert in AC help me diagnose the problem? Thank you.
#2
Sorry guys, I sat the driver side temp to Hi and passenger temp to Low. I should have set it at 72 degree on both sides. Outside is cool now. I'll post a new set of afternoon #'s tomorrow with the correct temp setting.
Rick
Rick
#4
cleared all the faults, same faults again:
EB1234- Sun sensor
EB1416- coolant circulation pump
morning #'s were good
morning 75 degree (ambient); engine not running; car sat over night
1. 71
2. 69
3. 82
4. 82
5. 80
6. 182
7. 06 - 09
8. 84
9. 48
10. 6.0
new afternoon #'s, 85 ambient
1. 78
2. 75
3. 71 - 76
4. 66 - 73
5. 75
6. 191 - 206
7. 08 - 07
8. 87 - 91
9. 37
10. 1.5
Thanks
EB1234- Sun sensor
EB1416- coolant circulation pump
morning #'s were good
morning 75 degree (ambient); engine not running; car sat over night
1. 71
2. 69
3. 82
4. 82
5. 80
6. 182
7. 06 - 09
8. 84
9. 48
10. 6.0
new afternoon #'s, 85 ambient
1. 78
2. 75
3. 71 - 76
4. 66 - 73
5. 75
6. 191 - 206
7. 08 - 07
8. 87 - 91
9. 37
10. 1.5
Thanks