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Hyundai Sonata Maintenance and Repair

3023 messages,  Last post on Dec 03, 2009 at 5:35 PM

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What is this discussion about? Hyundai Sonata, Sedan

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#31 of 3023 Re: dimming headlights by nato1 Dec 18, 2001 (5:26 pm)
Just out of curiosity, how clean is the negative (black) connection at the engine block? What I am getting at is, that when you put a connector onto aluminum and run electricity through it, it will start to oxidize and corrode. Now, if any of the connections are 'growing' you're alternator maybe getting the 'wrong signals' and think the battery is charged. If you're handy with a voltmeter, start the car, turn on every thing and check the voltage drop from the casing on the alternator to the neg terminal on the battery. There should be very little voltage (0.1v) drop, also check the voltage on the battery while the car is running, should be 13.2-14.0 volts (ballpark). If you're starting to get nowhere fast, check the voltage at the cigarette ligther (easy access point) while your driving. If youre lights are dimming and the voltage is ~13.5 volts, I don't think its the alternator. Have you replaced the headlight bulbs recently? Hope this helps. Nate
#32 of 3023 gas consumption too high by vglushko Dec 25, 2001 (9:09 pm)
Hello everyone and Merry Christmas! I've got my Sonata v6 two weeks ago. Everything seems to be OK except the gas consumption. I found that through out the city it was 15-16 liters per 100km and 9.2 on highway. (Specification says 11.8 and 7.3 respectivly).On my odometer just 900km. I did my measurements correctly no doubts. Have anyone tried to calculate the gas consumption? Any ideas what could be causing the problem? Thank you in advance.
#33 of 3023 Re: Transmission Slip Fix by vocalpt Dec 26, 2001 (9:05 pm)
Thank you 'morris20' for the great tip on why the tranny is slipping between 2nd and 3rd. Mine has the same issue and I will be taking my car in to be fixed in a few weeks. When they replaced your Power Control Module, did it truly fix the problem? Do you have a reference number from Hyundai regarding the problem, or maybe a number to call? I need something more to go on if my dealership gives me any problems when telling them about what you were told. Lastly, did Hyundai pay for your rental while it was being fixed? Thanks again for the info, and anyone else who knows anything, please post!
#34 of 3023 re: gas consumption by nato1 Dec 30, 2001 (4:56 am)
vglushko: I too have noticed a higher than expected gas consumption, but I attributed it to letting the car sit in the driveway for 5 minutes to let it warm up a bit. I am trying to find what exactly is causing the extra consumption. Is it the rear/mirror defroster or the a/c being on with the windshield defrost? (you can turn off by hitting the a/c button after the defrost it pushed, I really can't see using the a/c when it's 20 degrees outside and the windshield is heavily frosted). I'm averaging 21 mpg (9.15km/liter?) with 50/50 highway/city. I'm not sure on the math, but I think it's 62miles/100km and 3.7liters/gallon or is it more liters/gallon?
#35 of 3023 gas consumption by vglushko Dec 31, 2001 (5:00 pm)
Hi nato1! Thank you for your response. The gas consumption in your case will be 11.2 liters per 100 km ( city/highway 50/50). BTW the spec says it's has to be 10. This is just 12% higher. Not too bad. Mine is 25-35% higher. Just FYI if you'd like to convert the miles/gallon into km/liters here is the formula "2.354 : miles/gallon x 100". I am from Europe that's why I use km/liters. I am aware of impacting a cold weather, short rides, air conditioner and extra electrical equipment on total gas consumption. I would accept if the gas consumption was 10-15% higher as it's in your case, but 25-35% sounds too much. There is another thing that could be causing the problem. It's a driving style. Yes, I like stepping on gas, but for now while I am going through the break-in period I have changed my habits. Unfortunately, as you can see it didn't help much. What do you think about octane? The spec was given for 87 or 91? I think for 87. So for now I am feeding my baby with 92(and afraid of spoiling her), no sharp acceleration, no overload, no extra electrical stuff. We'll see after 2000km. It's 1150km on it. Another thing I've noticed is the transmission slip. On my car it happens once every time after I park my car for at least 15 min. Then it's gone. I don't know if I should take it to the mechanic or leave it as it is.
#36 of 3023 loking at buying a sonata by john344 Jan 19, 2002 (3:27 am)
question is the 4cy just as good as the 6 ? Also the warrenty how really good is it,do all maint have to be done by dealer? thanks
#37 of 3023 RE: Looking to buy ...john344 by lanman2 Jan 22, 2002 (12:40 pm)
My wife and I have owned 4 cyl.(1) and 6 cyl.(3) Sonatas, plus our daughter has a 4cyl. Tiberon. All have been very reliable. The only differences I noticed were the shift points are at higher revs. on the 4 cyl. and the engine noise was slightly higher when cruising at 65 M.P.H. and above. Also, gas mileage is slightly better in the 4 cyl.   The warranty is very good! We have NO complaints! You do NOT need to have all maintainance work performed by a Hyundai dealer, but you should be prepared to show them proof of proper maintainance. Even if you do your own oil changes, etc. make sure you record them in the owner's book, at the proper intervals, and keep receipts for your parts purchases.   After all, if I were to expect Hyundai to rebuild a motor or transmission, for free, in the year 2011 I think the least I can do is prove to them I took good care of the car.   I wish you success in your purchase. Please keep us posted about your experiences. LANMAN2
#38 of 3023 Sonata GLS "00 - "check engine" ON, shift to lower gear by jawabean Apr 07, 2002 (7:06 pm)
Recently, I had "CHECK ENGINE" light indicator ON few times. After restarting the engine, it went OFF.   Today, on the highway after about 20 mins driving, the light went ON and at the same time a car shifted to lower gear. I was driving app. at 60mph and 2.2RPM, so when it happened it went to 3.2 RPM. I felt that the engine was weaker than usual. After stopping the engine for few minutes, everything appeared to be as usual OK. Then it happened 2 times again, while driving home.   Any ideas?
#39 of 3023 TCS by denp3 May 05, 2002 (1:24 pm)
I have a 2002 Sonata with ABS and TCS. The manual is not to clear on the operating of the TCS. They talk about the TCS Off light being lit. I don't know if they made a design change or what. The TCS off light does not illuminate on mine. I don't know if TCS is off or on when the TCS light is illuminated. Does anyone else out their have an 2002 with TCS, if so how does yours work.
#40 of 3023 re: TCS by sambojoho May 07, 2002 (9:47 am)
I have a 2002 with TCS. The TCS button on the left of the dash (next to the Cruise button) turns the TCS system on and off. Whenever you start the car, the TCS is automatically ON with no light displayed on the dash. If you wanna turn it off, hit the button, and the TCS OFF will light up on the dash. If at any time during driving, the TCS kicks in, the light will flicker on the dash, showing it is working. The only time I have found it useful to turn off the traction control was when I got a flat and had to use the donut. The traction control didn't like the spin difference on the wheels with the small donut and thought I was slipping. Other than that one time, I just leave it in the default ON, so you don't have to do anything.

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