Question about 1997 Cadillac DeVille

2 Answers

INCREASED ENGINE RPM'S ON MY 99 CADILLAC DEVILLE

MY 99 CADILLAC DEVILLE HAS DEVELOPED A PROBLEM WHERE THE ENGINE RPM'S WILL INCREASE FOR NO APPARENT REASON. WHEN IT DOES THIS, THE CAR WILL ACCELERATE WITHOUT ME TOUCHING THE GAS. WHEN I AM BRAKING, THE ENGINE RACES AND I HAVE TO STAND ON THE BRAKES. I USUALLY TURN THE IGNITION OFF AND RESTART THE CAR. SOMETIMES THE RPM'S WILL GO DOWN BUT SOMETIMES IT DOESN'T. WHAT COULD BE WRONG? IS IT SOMETHING IN THE
COMPUTER? PLEASE REPLY.

Posted by on

2 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

    Scholar:

    An expert who has written 20 answers of more than 400 characters.

  • Expert
  • 173 Answers

Throttle position sensor. or idle control sensor

Posted on Mar 26, 2010

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

If it only does it at idle your EGR valve may be dirty or bad. If it sticks open the idle will be rough and very erratic

Posted on Mar 30, 2010

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Does a 1997 Cadillac Deville have a coil pack or a distributor cap


Michelle,

The 1997 V8 engine in the car is fitted with coil packs which are quite visible on the top of the engine. These need to be replaced when they eventually fail as is common.
Here is a video on the coils which may help you.................

How To Install Replace Ignition Coil 96 99 Cadillac Deville Northstar 4 6L...

Nov 21, 2015 | 1997 Cadillac DeVille

1 Answer

99 Cadillac Seville coolant light coming on. No apparent leakage. Adding coolant 2 to 3 times a week with little driving. Sometimes an anti freeze haze appears on inside front windshield .


HAVE YOU CHECKED YOUR COOLANT HOSES? CHECK TO MAKE SURE THERE NOT LOOSE OR CRACKED. ANOTHER THING COULD BE IS YOUR HEATER CORE HOSES COULD BE BAD. ALSO I WOULD CHECK YOUR RADIATOR CAP THE SEAL COULD BE BAD. I HOPE THIS HELPS YOU WITH YOUR TROUBLESHOOTING.

Sep 22, 2013 | 1999 Cadillac DeVille

1 Answer

Temp got up to 230 on my 99 cadillac deville is that normal


Make sure your engine is breathing properly, by regularly changing air filters. Flush your cooling system once each year and pressure test. There are cooling lines that cross over the rear of the engine that get corroded and may begin to weep antifreeze..you can view these lines by removing the engine cover....if you've had a consistent odor of antifreeze after running,with no drippage evident, this area is probably the culprit.....love my 99...

Mar 14, 2012 | 1999 Cadillac DeVille

3 Answers

On the dashboard of my 99 deville it says a/c off low refrigerant. how do I turn the ac back on to recharge ? thank you ...


You will need to recharge it to get it to come back on, it has a pressure switch that will prevent operation until the level is brought back up to normal.

Jun 26, 2011 | 1999 Cadillac DeVille

2 Answers

I want to buy a 99 cadillac deville and I was told it was only a head gasket problem (blown) what other items should I review before purchasing this vehicle. The owner claims she never let the car overheat...


poor choice if purchased. The head bolts tend to break and to have it repaired is very costly for they are slender and long. . A 99 Cadillac is too old for they have many modules operating this vehicle and the shocks themselves run nearly $1000 each. Back off on this deal

Feb 11, 2010 | 1999 Cadillac DeVille

1 Answer

1997 Cadillac Sevile idles at 4000 RPM


I'm not sure but sounds like you might have a few vacum lines that are rotted and sucking air in them. I would start checking all your vacum lines to start with. good luck

Dec 01, 2009 | 1997 Cadillac DeVille

2 Answers

I have a 1990 cadillac sedan deville with a E98 code


Sounds like the engine is idling to high. There is a procedure that you must go through to set it. Reply and I will let you know how to set it.

Nov 11, 2009 | 1989 Cadillac Sedan DeVille

1 Answer

Overheating,eveything looks ok.


I have a 97 Cadillac Deville with a northstar engine and have replaced it twice so far, so i answer this by experience...i've noticed to my two prior engines that went bad that the normal temp should NOT EXCEED 228 (normal), the red overheating light will come on at 250 and at 260 it will beep and tell you to stop engine - idle engine and will begin to smoke (overheat).

I hope this helps you and anyone else...by the way if your asking why did i replace my engine twice is simply because my cadillac is super clean inside and out, immaculate condition.

Apr 15, 2009 | 1997 Cadillac DeVille

1 Answer

Loss of power steering


If memory serves me correctly... the 05 deville is equipped with "Magnasteer" the electical connector at the rack and pinion is not a pressure sensor unless its on the line itself. The system operates by inducing voltage to magnets in the rack to make turning easier at lw speeds while adding resistance at higher speeds for added control and less drift. Check for any codes on your climate control by pushing "off and warmer" at the same time with the engine off, key on. Google the codes and see if any relate to the steering system and repost! I hope that helps!

Mar 09, 2009 | 2005 Cadillac Deville

Not finding what you are looking for?
1997 Cadillac DeVille Logo

561 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cadillac Experts

yadayada
yadayada

Level 3 Expert

61249 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21949 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6812 Answers

Are you a Cadillac Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...