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#2997 of 3420 Elantra 2000 Ingition/Control problem
Apr 24, 2008 (4:03 pm)
Hyundai Elantra 2000 GLS temperature related ignition control problem
Can anybody help me with a curious problem with the ignition/control system on my Elantra that started immediately after a visit to the dealer for a dealer recall and routine service?
First the symptoms: I live in deep south Texas where the land is flat as a pancake and there is a nice 10 mile stretch of four lane divided highway close by that we have been using as a 20 mile test track. The only “hills” are four overpasses.
1) The car starts easily and getting on to the test track we accelerate up to the posted 70 mph and engage the cruise control. For the first 20 minutes the car behaves perfectly. The throttle position on level road is about one third.
2) After about 20 minutes at the next overpass when the cruise control asks for more throttle the car appears to hesitate as though it was miss firing. As soon as the throttle demand goes away the hesitations go away.
3) On the following overpass the hesitations are more severe and engine rpm drops. The transmission shifts down and when the hesitation goes away the rpm screams as the power comes back on. This all repeated about once a second with ride becoming increasingly jerky Not wanting to trash the transmission I disconnect the cruise control
4) At this point the engine will accept up to about half throttle before the hesitations start. Beyond half throttle the engine appears to die for may be half a second before the power comes back on briefly in a die/return, die/return cycle.
5) Over the next 30 minutes the useable throttle range decreases to the point where any throttle beyond idle causes it to die and then finally it won’t even idle.
6) If the car is allowed to rest and recover its sense of humor (or more likely to simply cool down) the whole one hour process can be repeated
What the dealer did before the problem started
1) Routine 50,000 mile service
2) Installed a new timing belt
3) The dealer recall was to lengthen the harness pigtail to the Mass Air Sensor
What we have done to attempt to rectify the problem
1) Checked all electrical and hose connections
2) The engine starts throwing error codes as the problem develops. Trouble is it throws too many codes apparently randomly. Using the codes as guidance, we have replaced:
a. The TPS (throttle position Sensor)
b. The ECM (Electronic Control Module)
c. The MAS (Mass Air Sensor)
3) Replaced the fuel pump and fuel filters
4) Cleaned the fuel system
We think we may be looking for an ignition/control system component that goes bad when it gets too hot.
What do you think?
#2998 of 3420 Noise in new 2008 Elantra
Jun 03, 2008 (5:51 am)
I'm not sure if the noise I'm hearing might be part of the 'breaking in process' for a new car. I'm a recent owner of a new Elantra SE automatic. I've noticed that it makes a sort of creaking/groaning noise when I turn the steering wheel (in either reverse or drive) mainly while parking the car, or coming out of a parallel space. While in the drivers seat it sort of sounds as if it's in the front and back tire area and could be in response to the turning of the wheel. When I got out of the car to listen and let my boyfriend mimic the maneuvers, I didn't hear the noises at first from the outside, but then I did. We are planning to bring the car in to the dealership just to have them take a listen, but was wondering if someone might have an idea, has experienced the same thing, and can provide some insight.Am I making a big deal out of nothing, or might this be a potential problem? Thanks!
#2999 of 3420 Re: Noise in new 2008 Elantra [lena12]
Jun 03, 2008 (6:07 am)
I own a 2008 Elantra. I have NOT noticed such a sound, but when I drive today, I'll roll down my windows and listen carefully. If I notice something significant, I'll post it. I think it's wise to have the dealership take a look.
#3000 of 3420 Re: Noise in new 2008 Elantra [worldly]
Jun 03, 2008 (7:21 am)
Thanks for your reply. It's a pretty obvious sound when I am in the car with the windows rolled up (stereo not on) that I have only heard while parallel parking and pulling out of spaces, so if you haven't noticed it, your car most likely doesn't have the same 'problem'. Lucky you! We will be checking it out this weekend.
#3001 of 3420 Re: Elantra 2000 Ingition/Control problem [churcher]
Jun 03, 2008 (7:12 pm)
If the dealer caused this problem, you should bring it back to them. Its posible that they made an error doing the service or the recall. What you describe is one of the symptoms of a MAF (mass airflow) sensor problem. If they made an error, throwing parts will not fix the problem. Good luck.
#3002 of 3420 Re: bjc2 [bjc2]
Jun 03, 2008 (7:26 pm)
If this happens after vehicle has sat for a while (like overnight) your problem may be carbon build up in the engine. What happens is when you first start the engine, injected fuel is absorbed by the carbon build up during the first few seconds of engine starting. Engine sputters or dies. Have your mechanic Decarb the engine. It should be fine after that otherwise its something else. If it works., avoid using cheap gas. Use only TOP TIER certified gas. Goggle top tier gas so you will understand. Good luck.
#3003 of 3420 2004 electric windows both off track????
Jun 07, 2008 (5:51 pm)
Hi, I believe the glue that holds the window has come loose. I had a problem with this when it was under warranty about a year ago and had it fixed. I seem to remember them saying that it was glue or silicone? A few days ago the driver window let go and does not close or open properly then within two days the passenger goes. Is this something my boyfriend and I can fix? I had a look through the forum to see if there were any related posts but didnt see anything that described what I need to do. If we can fix it does anyone have instructions and what glue/silicone is used and where to get it. Thanks soooo much in advance to anyone that responds.
#3004 of 3420 Re: Noise in new 2008 Elantra [lena12]
Jun 09, 2008 (9:03 pm)
Its possible that what you are hearing is the noise coming from the motor of the electric power steering. I bought a 2008 Elantra 3 weeks ago and that is what I hear. The noise however sounds more of a whining sound similar to a dentist drill. You could easily duplicate the sound by quickly turning the steering wheel left and right several times. This is the same noise I also hear from Mazda 3 vehicles. This is normal noises coming from the electric power steering and it will not go away. If you say it is a groaning/creaking sound then its time to take it to your dealer.
#3005 of 3420 Re: 2004 electric windows both off track???? [kimmers2]
Jun 10, 2008 (6:05 am)
Not sure about the glue used, but assuming that is all that has happened, you might check with a local auto glass shop and see what they would charge to do the repair. This is something they see regularly and would have the correct adhesives and expertise to do it quickly and correctly.
#3006 of 3420 Re: Noise in new 2008 Elantra [gomst1]
Jun 10, 2008 (6:21 am)
We took the car in (to a Hyundai dealer closer to where I live just so they could have a looksy, not where I bought the car - we were planning to take it there this weekend if service station closer to us told us something drastic) and wouldn't you know that car didn't have a sound to make whatsoever! We attempted to mimic the maneuvers, drove around with a mechanic, and NOTHING. The mechanic did mention that since it is a new car and since we don't drive it every day (we live in a large city and use public transport to commute to work), it might tend to make a couple of little sounds at first, but once the car is out on the road, it's fine. This seemed to be the case. I think the car just likes to be driven. And this is fine for me because I like to drive it! Thanks to all for your responses.