cadillac360 Posted October 23, 2006 Report Share Posted October 23, 2006 I have been having this issue a lot recently. I will start my car and the AC will come on, I have it set at 60 and on High(No auto). Now sometimes, there is no problem and it will run fine and cold, It is ALWAYS cold when it is on. But other times it just shuts off, and it later may come back on but not always, it is cold the entire time, so i dont think it is a compressor issue. There are no display codes, and no codes anywhere when I check them. Is this a bad relay, switch. All I know is that it is realy annoying in FLorida heat. Thanks (96 Deville, 4.6 northstar) I forgot to say, It always blows hard too, there is never a drop in performance, it just turns right off. Link to comment Share on other sites More sharing options...
KHE Posted October 23, 2006 Report Share Posted October 23, 2006 When it acts up, look at the compressor - is the clutch engaged? If it is, you will see the face of the clutch spinning. If it is not engaged, the clutch will be stationary. You might have a bad connection at the cutch or the clutch air gap may be too wide. Kevin '93 Fleetwood Brougham '05 Deville '04 Deville 2013 Silverado Z71 Link to comment Share on other sites More sharing options...
WarrenJ Posted October 23, 2006 Report Share Posted October 23, 2006 I forgot to say, It always blows hard too, there is never a drop in performance, it just turns right off. I'm unclear. Are you saying the blower motor turns off? Or does the blower simply continue while providing only warm air? Regards, Warren There is no means of avoiding the final collapse of a boom brought about by credit expansion. The alternative is only whether the crisis should come sooner as the result of a voluntary abandonment of further credit expansion, or later as a final and total catastrophe of the currency system involved. - Ludwig von Mises Link to comment Share on other sites More sharing options...
BodybyFisher Posted October 24, 2006 Report Share Posted October 24, 2006 Good Warren that is what i was thinking is it the FAN turning off? My fan was replaced on my 96, the fans are the Achilles heel of this car. It is important to keep the ignition wires away from the fan controller as EMF leakage/transients can damage components on the board. 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...
cadillac360 Posted October 24, 2006 Author Report Share Posted October 24, 2006 Yes the motor does turn off, i haven't had time to check the clutch cause its nighttime. I can feel cold air barely coming through the vents when it turns itself off. It also does it with the heater on 80, so im sure its not the compressor. Its almost like somebody turns the switch. Ohh and after I changed my battery, there were some codes, im gonna go right them down right now. Ok, they are PC0603 History IP1552 Have no clue what they mean, I hope they are about dead batteries! Link to comment Share on other sites More sharing options...
WarrenJ Posted October 24, 2006 Report Share Posted October 24, 2006 Yes the motor does turn off, i haven't had time to check the clutch Forget the A/C clutch. You have a blower motor problem. There is no means of avoiding the final collapse of a boom brought about by credit expansion. The alternative is only whether the crisis should come sooner as the result of a voluntary abandonment of further credit expansion, or later as a final and total catastrophe of the currency system involved. - Ludwig von Mises Link to comment Share on other sites More sharing options...
cadillac360 Posted October 24, 2006 Author Report Share Posted October 24, 2006 Ok I looked in my Haynes Manual and it says; P0603 is PCM long term memory reset. still dont know about IP1552, maybe power steering? Link to comment Share on other sites More sharing options...
WarrenJ Posted October 24, 2006 Report Share Posted October 24, 2006 Ok I looked in my Haynes Manual and it says . . . Okay, you're new here. We'll likely forgive you, but Haynes Manuals are NOT to be spoken about here! Regards, Warren There is no means of avoiding the final collapse of a boom brought about by credit expansion. The alternative is only whether the crisis should come sooner as the result of a voluntary abandonment of further credit expansion, or later as a final and total catastrophe of the currency system involved. - Ludwig von Mises Link to comment Share on other sites More sharing options...
cadillac360 Posted October 24, 2006 Author Report Share Posted October 24, 2006 Ok I looked in my Haynes Manual and it says . . . Okay, you're new here. We'll likely forgive you, but Haynes Manuals are NOT to be spoken about here! Regards, Warren Why? Ive found them to be useful, not for major repairs but just simple stuff. Its still worth the 20 bucks, well in my mind. Link to comment Share on other sites More sharing options...
Ranger Posted October 24, 2006 Report Share Posted October 24, 2006 Haynes & Chiltons are OK for basic simple things. They are not highly regarded nor recommended here. If you have ever paged through a FSM you know what we are talking about. If not, do yourself a favor and get one if you do your own wrenching and trouble shooting. You won't regret it. Link to comment Share on other sites More sharing options...
cadillac360 Posted October 24, 2006 Author Report Share Posted October 24, 2006 FSM, where and how much. All i have ever heard about were haynes. Oh and as for the IP1552, I cant find anything about a code ending in 552, anywhere. I hope its nothing. Link to comment Share on other sites More sharing options...
Ranger Posted October 24, 2006 Report Share Posted October 24, 2006 http://www.helminc.com. They are running a 1/2 price sale now. Full price is about $135. They are about 3000 pages (2 volumns). For a '96, check Ebay first. You can probably find one for a better price there on one that old. Link to comment Share on other sites More sharing options...
WarrenJ Posted October 24, 2006 Report Share Posted October 24, 2006 http://www.helminc.com. They are running a 1/2 price sale now. Full price is about $135. They are about 3000 pages (2 volumns). For a '96, check Ebay first. You can probably find one for a better price there on one that old. I recently received my three volume 2nd Edition set of manuals from Helm. $67 Delivered to my door. Sure, you can get a war-torn set on eBay for $40, but wouldn't you rather have a brand new set to call your own? I'd spend the extra bucks and avoid the eBay hassle. As a plus, you'll get the latest edition. Regards, Warren There is no means of avoiding the final collapse of a boom brought about by credit expansion. The alternative is only whether the crisis should come sooner as the result of a voluntary abandonment of further credit expansion, or later as a final and total catastrophe of the currency system involved. - Ludwig von Mises Link to comment Share on other sites More sharing options...
BodybyFisher Posted October 24, 2006 Report Share Posted October 24, 2006 Ok I looked in my Haynes Manual and it says . . . Okay, you're new here. We'll likely forgive you, but Haynes Manuals are NOT to be spoken about here! Regards, Warren Why? Ive found them to be useful, not for major repairs but just simple stuff. Its still worth the 20 bucks, well in my mind. When you buy the factory service manual (FSM) you will know what we mean. You said it, NOT FOR MAJOR REPAIRS. You will scale it in the trash when you see the FSM and realize how useless the Haynes is. 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...
WarrenJ Posted October 24, 2006 Report Share Posted October 24, 2006 . . . still dont know about IP1552, maybe power steering? That is one of those errors generated when the battery is disconnected. Unless it recurs, I'd not worry about it. After RESETing your DTC's let us know if it pops back up. Aren't you glad we're back on topic? NOW: why does his blower motor shut off? Anyone? Regards, Warren There is no means of avoiding the final collapse of a boom brought about by credit expansion. The alternative is only whether the crisis should come sooner as the result of a voluntary abandonment of further credit expansion, or later as a final and total catastrophe of the currency system involved. - Ludwig von Mises Link to comment Share on other sites More sharing options...
KHE Posted October 24, 2006 Report Share Posted October 24, 2006 Yes the motor does turn off, i haven't had time to check the clutch Forget the A/C clutch. You have a blower motor problem. I agree - the initial post led me to believe that the airflow was constant and the A/C was cutting in and out... Kevin '93 Fleetwood Brougham '05 Deville '04 Deville 2013 Silverado Z71 Link to comment Share on other sites More sharing options...
cadillac360 Posted October 24, 2006 Author Report Share Posted October 24, 2006 yeah, sorry to confuse. It is the motor cutting in and out, but there are no codes about it. It is just like it turns itself off. If you can tell me some relays to check and how id appreciate it. Link to comment Share on other sites More sharing options...
BodybyFisher Posted October 24, 2006 Report Share Posted October 24, 2006 You likely need a new motor but check the electrical connection some have reported melted connectors 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...
cadillac360 Posted October 24, 2006 Author Report Share Posted October 24, 2006 You likely need a new motor but check the electrical connection some have reported melted connectors Where would that be exactly? Im not too sure about it. wow, it seems to be under about everything. Under the relay center. Under the strut bar. Link to comment Share on other sites More sharing options...
BodybyFisher Posted October 24, 2006 Report Share Posted October 24, 2006 You likely need a new motor but check the electrical connection some have reported melted connectors Where would that be exactly? Im not too sure about it. wow, it seems to be under about everything. Under the relay center. Under the strut bar. What your HAYNES doesn't tell you where that is? Maybe Adallak can, he seems to like the HAYNES all of a sudden..... See the red circle on the firewall for the location of the blower motor, its not easy to remove, you will find the connector there also. 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...
cadillac360 Posted October 25, 2006 Author Report Share Posted October 25, 2006 What your HAYNES doesn't tell you where that is? Maybe Adallak can, he seems to like the HAYNES all of a sudden..... See the red circle on the firewall for the location of the blower motor, its not easy to remove, you will find the connector there also. No, it did, and I looked after I posted, ****. The connector wasnt melted or dirty or anything, it doesnt seem to difficult to change. Anything I need to look out for? (The haynes tells me how, but...) Link to comment Share on other sites More sharing options...
BodybyFisher Posted October 25, 2006 Report Share Posted October 25, 2006 Name calling is not necessary. Replace the motor, its about $275, and its a bear to change, you may need to tilt the engine forward. 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...
clarkz71 Posted October 25, 2006 Report Share Posted October 25, 2006 "No, it did, and I looked after I posted, ****." That's a good way to get help. Link to comment Share on other sites More sharing options...
cadillac360 Posted October 25, 2006 Author Report Share Posted October 25, 2006 I was just playin. Calm Down. I love my Haynes. Anyways, I think I'm gonna wait to fix it until after winter, the coldest it gets here is 30's. So thanks for the help guys. Ohh and as for tilting the engine forward, It says to remove the ignition coil block and the strut bar and it can be rotated out. Moving the motor sounds extreme, I dont even want to try doing that. Link to comment Share on other sites More sharing options...
Ranger Posted October 25, 2006 Report Share Posted October 25, 2006 Ohh and as for tilting the engine forward, It says to remove the ignition coil block and the strut bar and it can be rotated out. Moving the motor sounds extreme, I dont even want to try doing that. Removing it is one thing. Installing is another. The original will come out in pieces if Haynes has the proper proceedure, but the new ones have been redesigned and get installed in one piece, thus you will find that there is not enough clearance between the firewall and the cam cover. You will have to remove the "dog bones" and replace the longer one with a turnbuckle which will allow you to rock the engine forward an inch or two, which will give you just enough clearance to install it with very little persuasion. Link to comment Share on other sites More sharing options...
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