My 2004 Deville CTs Northstar has problem with engine dying when I stop to turn and the engine slows to idle speed! The extra load of the power steering pump overloads the idling engine! Any theories?

Asked by Nov 15, 2016 at 08:20 PM about the 2004 Cadillac DeVille Sedan FWD

Question type: Maintenance & Repair

My 2004 Deville CTs Northstar has problem with engine
dying when I stop to turn and the engine slows to idle
speed! The extra load of the power steering pump
overloads the idling engine! Any theories?

2 Answers

117,445

There's an idle speed up switch on the power steering line. When turning the steering wheel hard as in a parking or low speed turning maneuver the increased pressure on the power steering hose activates the switch to send a signal to the computer to speed up the idle about 50 RPMs to compensate for the added load and prevent stalling. HTH. -Jim

3 people found this helpful.

I discovered today it also does it when idling and I apply the brake! Idle speed is 750 rpm!

Your Answer:

Cadillac DeVille Experts

  • #1
    Js08016
    Reputation
    3,440
  • #2
    kikero
    Reputation
    2,520
  • #3
    Cynthiasmith
    Reputation
    2,240
View All

Find great deals from top-rated dealersTM

Search

Related Models For Sale

Used Cadillac CTS
15 Great Deals out of 273 listings starting at $4,803
Used Lincoln Town Car
14 listings starting at $5,995
Used Chevrolet Impala
20 Great Deals out of 827 listings starting at $2,495
Used Cadillac Escalade
11 Great Deals out of 755 listings starting at $5,000
Used Chevrolet Corvette
29 Great Deals out of 865 listings starting at $9,880
Used BMW 7 Series
13 Great Deals out of 201 listings starting at $7,500
Used Chrysler 300
55 Great Deals out of 960 listings starting at $2,800
Used Mercedes-Benz S-Class
13 Great Deals out of 183 listings starting at $8,587

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.