bdhogg Posted May 13, 2009 Report Share Posted May 13, 2009 Hello, I am needing some help in trying to figure out what is wrong with my AC and about how much it will cost to fix it. I have a 98 STS Seville with Northstar Engine. Last summer, the driver's side only blew out cool to warm air but the passenger side blew out cold air. I made it through the summer with that. This summer, there is no cold air on either side. Blows out very warm air. The fan works great, just no cold air. Any ideas what is wrong and what it will take to fix it. Thanks! Link to comment Share on other sites More sharing options...
BodybyFisher Posted May 13, 2009 Report Share Posted May 13, 2009 Hello, I am needing some help in trying to figure out what is wrong with my AC and about how much it will cost to fix it. I have a 98 STS Seville with Northstar Engine. Last summer, the driver's side only blew out cool to warm air but the passenger side blew out cold air. I made it through the summer with that. This summer, there is no cold air on either side. Blows out very warm air. The fan works great, just no cold air. Any ideas what is wrong and what it will take to fix it. Thanks! Check your codes and report them here and we can help you To get the codes go to the top of the page, click how to, then DTC codes and follow the instructions for your year Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
bdhogg Posted May 13, 2009 Author Report Share Posted May 13, 2009 Hello, I am needing some help in trying to figure out what is wrong with my AC and about how much it will cost to fix it. I have a 98 STS Seville with Northstar Engine. Last summer, the driver's side only blew out cool to warm air but the passenger side blew out cold air. I made it through the summer with that. This summer, there is no cold air on either side. Blows out very warm air. The fan works great, just no cold air. Any ideas what is wrong and what it will take to fix it. Thanks! Check your codes and report them here and we can help you To get the codes go to the top of the page, click how to, then DTC codes and follow the instructions for your year Here are the codes: ABS 7208 AMP 836B DDM 0812 DIM 8250 IPC 807A IPM 6718 IRC F895 PCM - NOT SUPPORTED RFA 8070 RIM 8410 SDM 8960 VTD 8190 MSM - ONE TIME SAID 0647 AND ANOTHER TIME SAID "B2111 HISTORY" TTM 8240 RSS 8061 Thanks, let me know if there is anything else I need to do. Link to comment Share on other sites More sharing options...
BodybyFisher Posted May 13, 2009 Report Share Posted May 13, 2009 Where did you see PCM not supported? Where are you located, is this an export car? Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
bdhogg Posted May 14, 2009 Author Report Share Posted May 14, 2009 Where did you see PCM not supported? Where are you located, is this an export car? I am in East Texas. I bought it in Dallas so I don't think it is an exported car. When I was going down the list of codes and came to PCM it said PCM was not supported. Do you know what that means? Link to comment Share on other sites More sharing options...
BodybyFisher Posted May 14, 2009 Report Share Posted May 14, 2009 Where did you see PCM not supported? Where are you located, is this an export car? I am in East Texas. I bought it in Dallas so I don't think it is an exported car. When I was going down the list of codes and came to PCM it said PCM was not supported. Do you know what that means? I have never seen that on a 98, it does not make sense. Try disconnecting the battery when you get a chance and see if that goes away I dont see any codes indicating an AC problem, is your AC compressor cycling? Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
Ranger Posted May 14, 2009 Report Share Posted May 14, 2009 Differential temperatures from left to right side is frequently a low refrigerant symptom on dual zone systems. Link to comment Share on other sites More sharing options...
bdhogg Posted May 16, 2009 Author Report Share Posted May 16, 2009 Differential temperatures from left to right side is frequently a low refrigerant symptom on dual zone systems. I am going to have it serviced and see if that is the problem. I will post back if it is, but I not sure that is the problem. thanks for all the help! Link to comment Share on other sites More sharing options...
brookdavis Posted August 18, 2009 Report Share Posted August 18, 2009 My ac wasn't workin either and you helped me sort it out with this thread. Cheers! Link to comment Share on other sites More sharing options...
Texas Jim Posted August 18, 2009 Report Share Posted August 18, 2009 My ac wasn't workin either and you helped me sort it out with this thread. Cheers! Welcome to the forum... Glad we were of help. Link to comment Share on other sites More sharing options...
Cadillac Jim Posted August 19, 2009 Report Share Posted August 19, 2009 ABS 7208 AMP 836B DDM 0812 DIM 8250 IPC 807A IPM 6718 IRC F895 PCM - NOT SUPPORTED RFA 8070 RIM 8410 SDM 8960 VTD 8190 MSM - ONE TIME SAID 0647 AND ANOTHER TIME SAID "B2111 HISTORY" TTM 8240 RSS 8061 These aren't OBD II codes for the USA. None of the USA codes are over 4000. A typical USA code is ACM P1544 CURRENT which means "A/C Refrigerant Condition Very Low" Just running the few numbers that are in range, I get therse: P0647 Air Conditioning (A/C) Clutch Relay Control Circuit B2111 Lumbar Down Switch Failed This car was not originally sold in the USA, or at least the dashboard wasn't. Have you run a CarFAX on the VIN? -- Click Here for CaddyInfo page on "How To" Read Your OBD Codes-- Click Here for my personal page to download my OBD code list as an Excel file, plus other Cadillac data -- See my CaddyInfo car blogs: 2011 CTS-V, 1997 ETC Yes, I was Jims_97_ETC before I changed cars. Link to comment Share on other sites More sharing options...
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