Going to try the sensor - what do u think?

[krypto]

I pulled up my ac codes. I have a 1998 c230.

The a/c codes where:

03 12 9
05 146
06 152
07 8degree9
08 100
10 295
20 000
21 070
22 000
23 000
24 13.8
40 03
41 03
42 18
43 6


I have a problem where my ac compressor cuts off after one minute. It's nice and cold but cuts off. Restart car same thing, works for a minute.

I'm pretty sure it is because of the evaporator temp sensor. I think that is the '05 146' reading? My understanding is that that value should be much lower.

Question..do you think I am correct with replacing the sensor? That 146 value doesn't seem to change much.

[Sulaco]

Here is a thread I found that was pretty helpful:

http://www.club202.com/forums/showthread.php?s=&threadid=9446&highlight=a%2Fc+diagnostic

I'm also in the middle of an AC repair and the search function on this forum is incredible. I'm using old info from here and logging most of it in a thread I've started in the Repairs section. First I'm tackling why my AC wasn't getting cold, second I'm tackling ducting/vacuum issues.

But I digress. To answer your question, i've also read that the evap temp sensor should read in the 35-40 degree range. But that doesn't mean the sensor is bad. According to an older thread (which I couldn't find again very quickly) it could likely point to a valve that is stuck open, preventing proper flow in the system. I believe it might have been the duo valve, but I could be mistaken.

Try doing a search using any combination of "ac" and "diagnosis." You'll find a wealth of knowledge that should point you in the right direction. That's what I do! For the sake of future travelers with this issue, post your results in the thread you've created so that the forum isn't tied up with countless loose-ends with nothing helpful to add.