ccdog Posted March 13, 2011 Report Share Posted March 13, 2011 Hey guys. I have an over heating problem with my 97 deville...110k mi. Car starts to run hot when at a stand still(red light, traffic ect). Temp will drop back down under 200 once I get moving. It does get over 220 and climbing the longer I sit. I recently replace the radiator due to a leak.I also replace the thermostat and hoses. I replaced the water pump about a year ago. Coolant level is good...no leaks. I'm thinking fans. Is there a way to check them? I was told there are 3 relays that control them. Where are they located? I figure that would be my next step unless you guys have any other ideas. I can't use the car because of this problem. I really need to get it fixed. Appreciate any help as always....Jim Link to comment Share on other sites More sharing options...
Ranger Posted March 14, 2011 Report Share Posted March 14, 2011 I think the relays are between the fans. At least they used to be. The fans should always run with the A/C one. See if they do. Also check the belt tensioner and make sure that the condenser is not clogged with dead bugs restricting air flow. Link to comment Share on other sites More sharing options...
ccdog Posted March 14, 2011 Author Report Share Posted March 14, 2011 Thanks for your reply. I did check and clean the condenser. I'll check the tensioner again. I replaced the serpentine belt a year ago. Link to comment Share on other sites More sharing options...
KHE Posted March 14, 2011 Report Share Posted March 14, 2011 Sounds like something in the fan control circuit. With the car warmed up, let the engine idle and check to see if the fans come on. I do not recall at what temperature the ECM calls for fan operation though. Kevin '93 Fleetwood Brougham '05 Deville '04 Deville 2013 Silverado Z71 Link to comment Share on other sites More sharing options...
BodybyFisher Posted March 14, 2011 Report Share Posted March 14, 2011 The cooling fan relays will set codes if they are acting up, check to see if you have set codes Also, my cooling fans motor was bad and just free wheeled, it turned but turned slowly 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 March 15, 2011 Report Share Posted March 15, 2011 Thanks for your reply. I did check and clean the condenser. I'll check the tensioner again. I replaced the serpentine belt a year ago. You do realize that the water pump on the Northstar is not driven off the serpentine belt don't you? It's driven off a pulley on the left bank intake cam at the opposite end (rear)of the engine. Link to comment Share on other sites More sharing options...
ccdog Posted March 15, 2011 Author Report Share Posted March 15, 2011 Yes I do considering I replaced the water pump. Don't know what I was thinking when I did that last post. Thanks. Just frustrated I guess. Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.