Idle issues on a 2006 Hyundai Elantra 2.0L GLS

Asked by Dec 08, 2014 at 06:06 PM about the 2006 Hyundai Elantra GLS Sedan FWD

Question type: Maintenance & Repair

I recently did some work on my Elantra, replacing the rear struts, rear brakes, while also deciding to change the engine oil/filter and the transmission oil at the same time.  

Once I got all the work done. I started it up and it would idle roughly and lower than normal a bit at the start. I figured maybe the fuel just needed to cycle through a bit since it sat for 2 and a half weeks, so I drove it around for a while to make sure the brakes were all good. Then I left it over night.

Next day I started it up again sat there and the same thing would happen but after about a minute or 2 chugging along it would go into a high idle around 1100 rpm and stay there while park was engaged, tripping the MIL with a p507 code. Once I engage drive or reverse the idle goes down to 800ish rpm.  Consistently now every day it's the same thing.

Yesterday I started it with the same concerns and drove it to work (30 - 40 minute trip).  When I arrived to the parking lot and put it park, it went right back to idling high again at 1100.

I'm just having a hard time putting together the pieces of a low rough idle to start, then it changes to a high idle after a minute or so.

No issues like this prior to doing this work.

I haven't had the opportunity to diagnose it yet really as I've been back to work but maybe if someone might have some ideas on where to start, that'd be awesome.

I have since filled up the tank and ran a fuel system cleaner through it.


5 Answers


Check for vacuum leaks would be a place to start. Bump the pcv or something while you were fooling around in there?

Checked, no vacuum leaks. Pcv really not in a place to bump it but I removed it and cleaned it just in case. Cleaned throttle body and IAC. Managed to clear out the rough idle. But I still get the high idle... The pcv rattles when I shook it but I'd imagine that is normal?


Yes, the pcv should rattle. How did you check for vac leaks?

1 people found this helpful.

Could be an idle air control valve problem. There are vids on you tube on how to test this. It would also be a good idea to clean the throttle body.

1 people found this helpful.

ever figure it out? mine does the same thing

Your Answer


Looking for a Used Elantra in your area?

CarGurus has 48,041 nationwide Elantra listings starting at $1,995.


Hyundai Elantra Experts

  • #1
  • #2
    Carrie Shelton
  • #3
View All

Related Models For Sale

Used Hyundai Sonata
365 Great Deals out of 49,687 listings starting at $1,250
Used Honda Civic
333 Great Deals out of 52,980 listings starting at $1,200
Used Toyota Corolla
571 Great Deals out of 66,738 listings starting at $1,449
Used Toyota Camry
761 Great Deals out of 70,900 listings starting at $1,200
Used Honda Accord
424 Great Deals out of 101,059 listings starting at $1,200
Used Hyundai Accent
215 Great Deals out of 12,311 listings starting at $1,588
Used Nissan Altima
720 Great Deals out of 70,156 listings starting at $1,495
Used Kia Optima
416 Great Deals out of 30,165 listings starting at $1,500
Used Mazda MAZDA3
215 Great Deals out of 25,792 listings starting at $1,950
Used Ford Focus
406 Great Deals out of 76,949 listings starting at $1,195
Used Nissan Sentra
457 Great Deals out of 50,801 listings starting at $1,795
Used Ford Fusion
576 Great Deals out of 61,479 listings starting at $1,500

Used Cars For Sale

2014 Hyundai Elantra GLS Sedan FWD For Sale
1 listings starting at $9,950

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.