car idle surges high then lower then normal. dies out too

Asked by Dec 31, 2015 at 04:53 PM about the 2000 Chrysler Concorde

Question type: Maintenance & Repair

7 Answers

12,410

scan for codes, clean idle air control valve, check for vacuum leaks.

Hello, those procedures were all performed and still the same issues. I should also note the air idle control valve was changed and it ran good for 3 days then the same problem. bad control valve? Wiring issues? Also there are no vacuum leaks. No codes either. Any other suggestions would be appreciated. T Y

12,410

Hate to say it, but the new iac could be bad. There are several good videos on youtube on how to test it. I would do this for sure. Also, if it is bad I would suggest also that you always use OEM electrical parts when replacing them. I have had much trouble with aftermarket crap that its just usually not worth it. Also, check all the fuses and relays.

Hello, the AIC valve was tested for voltage and it was fine. Would worn spark plugs cause this? I had a mechanic pull 2 random plugs and he said they were pretty well worn. This was not checked at first because the car ran fine. Any chance this could remedy the situation? T Y

12,410

Yes, an overdue tuneup can cause all kinds of problems.

Hello, a complete tuneup was done. Same issues. Any other suggestions?

12,410

Ok, you might need professional equipment to find out. You can get a fuel pressure tester and do that yourself, but I would suggest having a mechanic with an engine analyzer hook up and retrieve live data while the vehicle is running. It will give all the info needed including fuel trim.

Your Answer

Concorde

Looking for a Used Concorde in your area?

CarGurus has 208 nationwide Concorde listings starting at $2,997.

ZIP:

Chrysler Concorde Experts

  • #1
    Tom Hartley
    Reputation
    210
  • #2
    Tom Demyan
    Reputation
    200
  • #3
    dandyoun
    Reputation
    170
View All

Related Models For Sale

Used Chrysler LHS
64 listings
Used Chrysler 300M
204 listings
Used Dodge Intrepid
254 listings starting at $5,495
Used Chevrolet Camaro
437 Great Deals out of 31,299 listings starting at $3,550
Used Chrysler Town & Country
344 Great Deals out of 13,664 listings starting at $1,000
Used Ford Taurus
209 Great Deals out of 14,739 listings starting at $1,850
Used Chrysler Sebring
22 Great Deals out of 2,637 listings starting at $1,990
Used Audi A8
67 Great Deals out of 1,911 listings starting at $3,995
Used Mercury Grand Marquis
21 Great Deals out of 1,703 listings starting at $1,995

Used Cars For Sale

2003 Chrysler Concorde For Sale
22 listings starting at $2,997

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.