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

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 of 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 of 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 46,516 nationwide Elantra listings starting at $999.


Hyundai Elantra Experts

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

Related Models For Sale

Used Hyundai Sonata
593 Great Deals out of 54,267 listings starting at $1,500
Used Honda Civic
600 Great Deals out of 52,409 listings starting at $999
Used Toyota Corolla
941 Great Deals out of 70,520 listings starting at $1,479
Used Honda Accord
801 Great Deals out of 89,314 listings starting at $1,444
Used Toyota Camry
1,125 Great Deals out of 76,738 listings starting at $1,100
Used Hyundai Accent
265 Great Deals out of 12,283 listings starting at $1,950
Used Nissan Altima
1,154 Great Deals out of 74,277 listings starting at $900
Used Kia Optima
486 Great Deals out of 31,982 listings starting at $2,450
Used Mazda MAZDA3
250 Great Deals out of 27,360 listings starting at $1,495
Used Ford Focus
605 Great Deals out of 69,890 listings starting at $1,495
Used Nissan Sentra
682 Great Deals out of 53,550 listings starting at $1,800
Used Ford Fusion
955 Great Deals out of 63,521 listings starting at $888

Used Cars For Sale

2014 Hyundai Elantra GLS For Sale
44 listings starting at $8,420

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.