GUMMY THROTTLE BODY ISSUES..HELP!

25

Asked by Jul 05, 2011 at 10:06 PM about the 2009 Hyundai Sonata GLS V6

Question type: Maintenance & Repair

I have a 2009 Hyundai Sonata purchased new and currently have 55,000 miles.  At approx 20-25,000 miles the car started misbehaving.  When reaching a speed of anywhere from 40-65 mph, I would take my foot off the accelerator expecting my speed to reduce, only to have the car continue at the same speed all the while the RPMs would rapidly drop and immediately pick up again...as though I stepped on the accelerator.  The RPMs would continue to do this until I actually stepped on the brake drastically reducing my speed.  I gave in and took the car to the dealer.  $228.00 and a day later, I was told that I had a "Gummy Throttle Body" that they had to clean.  Well, the car has just started behaving in the same manner!  I am a single woman and don't want to be taken advantage of!  Is there something that I should be doing differently in order to avoid this issue???  Is this a common issue with this car?  Any words of wisdom would be greatly appreciated!  

14 Answers

1,465

First of all why was that not covered under the warranty? and it still should be. If not fixed to your satisfaction bring it to a different dealer ASAP

2 of 2 people found this helpful.
25

Thanks for your reply Joe! Those were my thoughts as well! Thus the reason for taking the car back to the dealer. So safe to assume this is not a normal issue?? I'll go back to the dealer again and complain as well as question the warranty. If no satisfaction, I'll go elsewhere and try.

1,465

Absolutely not a normal issue. I have an '07 Sonata and love it, have had no problems whatsoever with the dealer, partly because I factored that in (the dealer) before making my purchase...the big highway store super showrooms tend to do a lot of sales volume but don't normally do so well on the service side.

25

O.K. Joe...two weeks later and I'm here with an update hoping for your input yet again :) I finally got to a different dealer this past weekend. When explaining my issue I was asked if this was the first time having this problem. I was honest with them...told them it happened at approx. 25,000 miles at which time I had taken it to where I had bought the car. I told this guy that I wasn't going to tell him what the first dealers so called diagnosis...but that I wanted them to look into it blind so to speak based solely on what I provided them with as well as what they witnessed from the car. He understood, agreed, and scheduled me for this past Monday. My entire ride there consisted of the car doing "it's thing". Would you believe when I took the tech for a ride it didn't misbehave?!?!?!? Not even once! Grrrr So we went back to the garage and he hooked it up to the diagnostic thing to see if by chance any codes came up even though I had no lights on. This is what my receipt states. "SCANNED FOR DTC FOUND PO449 EVAP EMISSION SYSTEM VENT VALVE RESET TCM ROAD TEST OK AT THIS TIME" I was told that it may or may not have anything to do with the way the car was behaving. Um...ok? Well, this took place Monday. Today is Friday. I'm shocked to tell you that the car hasn't been doing the rpm thing since Monday when they reset the TCM. So did that correct my problem? Permanently? Temporarily? If a code appears when they do the scan, doesn't that mean that there's a problem and a repair and/or replacement is needed rather than just resetting the TCM? (whatever TCM is) NEW ISSUE! Related to them doing the reset or just a coincidence? Extremely high heat today of approx. 105! Left work and drove approx. 30 mins with the a/c on and fan blasting. Had to stop at UPS so the car was turned off for approx 10 mins. Started it back up to leave. Drove approx. 5 mins when to my surprise my check engine light came on! First time ever for a light of any kind to come on! So again, totally coincidence? Or could this be related to the reset that was just done 4 days ago? Or heat related...even though the temp gauge was normal. sigh Getting slightly frustrated. Sorry...didn't mean to write a book :(

1 of 1 people found this helpful.
1,465

Of course it won't misbehave when you bring it to the mechanic, don't you know that? OK -- sounds like they did the right thing, a scan (first), found a code and fixed. It is possible, but not guaranteed, that was the problem. A code means there is a problem but it doesn't necessarily mean a repair, it could be just a reset, and with today's electronically controlled engine computers, all it takes is one part to be out of whack and car just won't run right. So hopefully that was all it was for the throttle issue, have to wait and see; just like anything else, some mechanics/dealers are better than others. As for the new code, it's hard to say but a wild guess is it's unrelated to the other issue. Only way to know for sure is to run another scan. If you have an Autozone store near you sometimes they will run your scan for free and on the spot. Check engine light could be any of literally hundreds of things, even a loose gas cap.

1 of 1 people found this helpful.
1,465

Oh TCM should be (I think) Throttle Control Module, so that's why it was likely related to or the direct cause of your throttle issue.

1 of 1 people found this helpful.
25

I'm still amazed, but yes! It was in fact the gas cap! I'm guessing with the extreme heat we had yesterday that my cap loosened a bit?? Who would have thought that something like that would result in a check engine light! Re: my initial issue...knock on wood, but the car has been running as it should be since the reset. I want to thank you so much for your words of wisdom! Don't write me off just yet though :) I'm sure I'll be back with more concerns. You've been great Joe! Thanks again <3

1 of 1 people found this helpful.
2,255

The TCM is the transmission control module. This model Sonata has ETC (electronic throttle control) that is controled directly by the PCM (powertrain control module).

3 of 3 people found this helpful.

They charged $228 to perform an induction cleaning?!?!?!?!?!?!? When I worked at a Chevy dealer, we thought the $60 we charged was a rip off.

1 of 1 people found this helpful.
25

Far too many acronyms for me! All I know is that I have a Sonata, and my receipt states that they reset the TCM.

25

Well, considering I paid the $228...I would have gladly welcomed the $60 ;-) Makes me sick now though to find out that I should/could have refused to pay considering the warranty. That along with the fact that they didn't even fix the problem. I'm talking as though the issue has been resolved! Still keeping my fingers crossed after taking it to the other dealer and the reset was done. It's been 6 days and no issues so far :)

I have a 2009 Sonata as well. My car is in the shop for the tcm as well. My car wouldn't drive past ten miles an hour and finally quit all together. If they try to charge me for anything, I am going to yell loudly. It is covered under warranty!

3,680

having worked on this particular brand for the last 10 years it sounds to me like you have a problem with the throttle position sensor. it is a newly available part from hyundai( you used to have to replace the entire throttle body). there is also a reprogram for the ecm(engine control module) that goes with it. with you having the problem in the past the dealer should have no problem getting the repair covered even if you are out of warranty.after 10 years i have some strong advice to anyone who reads this post. if you take your car to a dealer for repirs and are just outside of warranty ask your service advisor if hyundai will do anything to help you out with the repairs. if its a small repair most of the time in my experience they will cover the repairs entirely. i have also seen 50/50 splits with the customer. but you will never know if you dont ask. they will not offfer this to you you will have to ask. oh and inside of every hyundai wners manual is huyundais consumer affairs hotline. this is your number to call and complain about anything youd like to

5 of 5 people found this helpful.
10

Hi,I have a hyundai sonata 07&since I had the car...It's giving me trouble.When I stop at a light or stop period with my foot on the brakes,it's make a strong vibration.Would I need motor mounds

1 of 1 people found this helpful.

Your Answer

Add photo

Related Questions

  • GUMMY THROTTLE BODY ISSUES..HELP! 14 answers

    I have a 2009 Hyundai Sonata purchased new and currently have 55,000 miles. At approx 20-25,000 miles the car started misbehaving. When reaching a speed of anywhere from 40-65 mph, I would take my f...

    2009 Hyundai Sonata GLS V6

    -

    Maintenance & Repair

  • Need help 4 answers

    I have a 2002 Hyundai Sonata it has a new fuel pump any new fuel pump relay switch sometimes it will start sometimes not it has died on me just driving down the road sometimes I have to wait 5...

    2002 Hyundai Sonata Base

    -

    Maintenance & Repair

  • Issues with 06 hyundai sonata 3.3l 6cylinder 1 answer

    Here recently I bought a 06 hyundai sonata today we realized the battery was not the right size in it so we went swap it out now the key it stuck on accessory and the car bass no inside lights but...

    2006 Hyundai Sonata GLS

    -

    Maintenance & Repair

  • 2006 Sonata 3.3 v6 107k Miles Throttle Problems 1 answer

    2 weeks ago I jumped in my car to go to work started no problem pulled out of the driveway and down the street. Pulled away from the stop sign and down to the next, this time when I stepped on the acc...

    2006 Hyundai Sonata LX

    -

    Maintenance & Repair

  • need help asap

    I have a 2001 Hyundai Sonata about a week ago it acted like the alternator went out so I put a new alternator on it that didn't fix my problem so I put it alternator fuse that didn't fix my proble...

    2001 Hyundai Sonata Base

    -

    Maintenance & Repair

Sonata

Looking for a Used Sonata in your area?

CarGurus has 47,996 nationwide Sonata listings starting at $1,195.

ZIP:

Search Hyundai Sonata Questions

Hyundai Sonata Experts

#1 toDumbToNotKnow
toDumbToNotKnow
Reputation 1,520
#2 Tom Demyan
Tom Demyan
Reputation 1,300
#3 dandyoun
dandyoun
Reputation 1,060
View All

Related Models For Sale

Used Hyundai Elantra
651 Great Deals out of 41,704 listings starting at $900
Used Honda Accord
1,055 Great Deals out of 68,303 listings starting at $1,000
Used Toyota Camry
1,244 Great Deals out of 84,502 listings starting at $750
Used Kia Optima
566 Great Deals out of 28,906 listings starting at $1,750
Used Nissan Altima
1,285 Great Deals out of 75,808 listings starting at $1,695
Used Honda Civic
882 Great Deals out of 84,979 listings starting at $750
Used Ford Fusion
1,288 Great Deals out of 76,498 listings starting at $1,500
Used Chevrolet Malibu
1,169 Great Deals out of 79,728 listings starting at $2,500
Used Toyota Corolla
1,003 Great Deals out of 69,994 listings starting at $1,800
Used Nissan Maxima
332 Great Deals out of 24,429 listings starting at $1,999
Used Hyundai Santa Fe
254 Great Deals out of 15,313 listings starting at $1,500
Used Hyundai Genesis
91 Great Deals out of 2,423 listings starting at $5,495
Used Mazda MAZDA6
194 Great Deals out of 14,729 listings starting at $1,395
Used Chevrolet Impala
600 Great Deals out of 35,644 listings starting at $899

Used Cars For Sale

2018 Hyundai Sonata For Sale
7,284 listings starting at $16,900
2017 Hyundai Sonata For Sale
67 Great Deals out of 17,134 listings starting at $11,982
2016 Hyundai Sonata For Sale
99 Great Deals out of 4,132 listings starting at $9,899
2015 Hyundai Sonata For Sale
157 Great Deals out of 4,370 listings starting at $8,500
2014 Hyundai Sonata For Sale
205 Great Deals out of 4,141 listings starting at $7,490

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.