Asked by mlynne100 Jul 17, 2014 in ~ 03:14 PM about the 1996 Cadillac DeVille Sedan FWD

Question type: maintenance & Repair

You are watching: 1999 cadillac deville cooling fans not working

Could be. However check the cable from the sending unit the controls the fan. (I admit I stole that answer indigenous dandyoun top top a very similar question, and that to be the problem)click come enlarge

My 1996 Deville had actually overheating issues. Boring hole v thermostat yet then found out there to be a little belt located under a covering that had broken. No one knew the existed and also we discovered it by accident. I think they stated it was on the water pump. Tiny item but vehicle runs fine now and has no overheating issues. However, the ac/heating pan does no come on.... Haven\"t solved it yet together I keep obtaining if this and if the answers. Saw a video clip where tampering v the buttons top top AC/heating could reason this as well happen... Actually, world pushing all those associated buttons in the wrong succession can reason this concern according to that video. Will get around to resolving it someday.

I went off topic for the relay location. Ns can\"t find the image as in the owners manual, can\"t copy and paste indigenous a pdf. However Download and also see thing 6 web page 58 -

I havd a 2000 Cadillac seville the fans will certainly not rotate on and the automobile runs really hot in ~ time yet it continues to be at 12:00 climate moves up gradually when stoped in traffic as soon as i start relocating my temp moves back to 12:00 idk what to carry out n i require my automobile thanks

Ok here\"s what\"s walk on. You have a fault password in your acm device that\"s what controls the auto climate, the a/c compressor and also the engine cooling fans. An initial thing to perform is turn the crucial to run. Press and hold the auto/econ button while simultaneously pushing the red temperature heat button. The device will the start displaying all ecm pcm tcs acm etc codes consisting of obd. In ~ the end of the list of whatever codes space there it will prompt you to pcm clean codes? If you push up (fan blade speed increase

I haven\"t do the efforts this method yet, but I was wondering what else if anything can be causing a/c come blow warm air and also cooling fans no working?

what walk on when i turn my car on and also my temp stays at 12:00 till i start moving around 20 feet my temp auto drops to the red and additionally theres a water leak under my passengers feet remainder under the gloves compartment

I have actually Cadilac Deville 2003 and also in warm weather it has tendency to overheat. It has 2 powerful electric cooling fans. My inquiry is - When must they turn on? They seems to be on ONLY as soon as air-conditioning or defrost is on .The temperature gage never goes previous the typical point, but in hot weather and also some hill driving that starts cook over.I know that this engines (NorthStar) have this problem. Might it assist to turn on the cooling pan (by turning on defrost / air conditioning ) or would certainly that make things also worse?I understand that air-conditioning will produce even much more heat, but the pan on may an ext than compensate for that ??

1996 cad sedan deville the left fan runs yet the right fan perform not run carry out that typical that the pan is bad

GuruT28H6 answered about a month ago1996 cad sedan deville the left pan runs but the appropriate fan do not run perform that average that the fan is badNo. It doesn\"t average the pan is bad. You could have a quick in the wiring harness, a bad relay, a negative fan electrical connector, or maybe, a negative fan. The easiest means to inspect the fan itself is to affix a 12 v. Resource directly to the fan\"s plugin connector. (I provided a corresponding pigtail and a vehicle battery.) If the pan runs climate the trouble lies elsewhere. Please keep in mind that there are YouTube videos extending this topic and pay attention to all objects that could intrude in the fan\"s operation space.

GuruT28H6 is right, could likewise be a negative ground, however a simpler way to check the fans is to just disconnect the coolant temp sensor harness,and your fans have to run on high speed. I have been driving mine 2000 STS like this for the last two months,l don\"t introduce this for long term because you have actually don\"t recognize what the coolant temp is ,car has not overheated since.bought a after market cooling pan temp sensor relay kit to placed on.Especially since I had actually the head gaskets done on my 2000 STS 3 year\"s ago, and my 2001 DeVille 5years ago.

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