Why is my car still idled so high?

Asked by Deemartin44 Mar 31, 2021 at 02:25 PM about the 2004 Cadillac DeVille DTS Sedan FWD

Question type: Maintenance & Repair

What's up everybody... my deville has I high idle
when in park and while driving to where i have to
hold 2 feet on the brake to stop it. I've changed the
IAC and TPS and the car is still doing the same
thing I've checked for leaks and these none .. any
suggestions on what's next?

1 Answer
155,265

james answered 3 years ago

Sounds like a vacuum leak. Check your vacuum hoses and gasket areas around the throttle body and intake manifold. Also check the hoses going to the charcoal canister. For testing purposes unplug the IAC and start the engine. The check engine light will come on, ignore it. With the IAC unplugged you should have a very low idle. If you do, inspect the wires going to the IAC for damage. Hope that helps! Jim

1 people found this helpful.
Mark helpful

Your Answer:

Related Questions

  • Why is my car still idled so high? 1 Answer

    What's up everybody... my deville has I high idle when in park and while driving to where i have to hold 2 feet on the brake to stop it. I've changed the IAC and TPS and the car is still doing the ...

    2004 Cadillac DeVille DTS Sedan FWD

    -

    Maintenance & Repair

  • Why is my car overheating? 5 Answers

    Heater blowing cold air and engine is overheating. Causes?

    2004 Cadillac DeVille DTS Sedan FWD

    -

    Maintenance & Repair

  • Why is my 1999 cadillac deville idled so hi 3 Answers

    1999 Cadillac DeVille Concours Sedan FWD

    -

    Maintenance & Repair

  • What is wrong with my car? 1 Answer

    Okay my car will turn over but won't they started. What could cause my car to do that is it the spark plugs? is it the alternator?

    2004 Cadillac DeVille

    -

    Maintenance & Repair

  • Why is car coolant pouring out of the overflow tube? 2 Answers

    I have a 1999 Cadillac Deville. Two weeks ago, the car was losing coolant on the passenger side towards the front of the car. It was on the radiator and the air deflector. The mechanic said it wa...

    1999 Cadillac DeVille Sedan FWD

    -

    Maintenance & Repair

Own this car?

Share your experience with others.

2004 Cadillac DeVille

Write a car review

Review another car

Shortcuts

Search Cadillac DeVille Questions

CarGurus Experts

  • #1
    james sparrow
    Reputation
    4,060
  • #2
    tuff4x4
    Reputation
    3,080
  • #3
    Cynthiasmith
    Reputation
    2,840
View All

Know more, shop wisely

Search

Related Models For Sale

Used Cadillac Seville
48 listings
Used Lincoln Town Car
15 Great Deals out of 401 listings starting at $500
Used Cadillac CTS
96 Great Deals out of 1,506 listings starting at $1,995
Used Chevrolet Impala
286 Great Deals out of 4,049 listings starting at $500
Used Chrysler 300
326 Great Deals out of 7,168 listings starting at $1,550
Used Chevrolet Corvette
724 Great Deals out of 12,358 listings starting at $4,995
Used Chevrolet Silverado 1500
4,276 Great Deals out of 131,637 listings starting at $1,000
Used Ford Mustang
944 Great Deals out of 22,717 listings starting at $1,100

Used Cars For Sale

2005 Cadillac DeVille DTS Sedan FWD For Sale
3 listings starting at $3,250
2004 Cadillac DeVille DTS Sedan FWD For Sale
3 listings
2003 Cadillac DeVille DTS Sedan FWD For Sale
2 listings
2002 Cadillac DeVille DTS Sedan FWD For Sale
3 listings
2001 Cadillac DeVille DTS Sedan FWD For Sale
5 listings

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.