Tucson & overheating

You already have a temperature gauge which serves this purpose. All you've proposed is adding another temperature gauge.

If you read the details about the product in your link, you'll see that it won't warn you about anything that will potentially kill the car. In fact, it appears that you cannot actually view any data in the car; you'll need to download to computer. Furthermore, the "alarm" feature is linked to speed and acceleration, not coolant temperature.

This device doesn't actually change anything in the vehicle, it simply plugs into the diagnostic connector and reads data. In that respect, won't be detectable once removed from the car. It shouldn't affect the warranty unless it malfunctions and shorts a computer (unlikely, but technically possible).

Sorry. Only replied to first half of post. RIF.

------------- JM says: Mileage and Warranty My car now has 9000 miles on it. Would they let me upgrade the warranty to bumper to bumper this late in the game? I have had no problems other than the Mileage stinks.

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If this vehicle was purchased in the U.S., you already have a 5 year/60k mile bumper-to-bumper warranty.

--------------- JM says: To improve the mileage could you? Use the Best oil (Synthetic) you can find? Make sure the tires are all inflated properly? Yes I know this one!!! Are there any performance chips that can be used with this car (Tucson) (Grounds for termination of warranty?) Any other ideas about mileage? I get 15 MPH in the city now and its going lower.

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I don't have any personal experience with synthetic. Another poster's data indicated an increase in fuel economy in his '06 Sonata after changing the oil to synthetic, but there was not enough data reported to determine whether there is a correlation. Others with more experience with synthetic may be able to answer this question better.

A performance chip could very well void the warranty on powertrain-related computers and other components. And it will give you worse fuel economy.

If you've got the V6, I wouldn't find 15mpg city alarming. The only other thing I can suggest is to try to drive easily (leave early, don't be in a hurry, take your time, etc.)

"hyundaitech" wrote in news: snipped-for-privacy@localhost.talkaboutautos.com:

What kind computer do you use to diag. problems? Can I get one :)? I did notice one thing. Sometimes as I am driving I notice a drop in fan speed even when the ac is not running. It only happens for a sec. but its noticable. I don't see the lights dimm or any other problems. Just the Blower fan inside.

Any ideas?

Thanks for you post JM

I've used synthetic for about 25 years and have switched 5 or 6 cars from dino oil to synthetic. I keep fairly meticulous fuel mileage records for my vehicles. I've never seen a change in mileage that was greater than the noise in my data. Amsoil makes great claims, but I don't believe at least half of what they claim. And with modern cars using 5W20 and even 0W20, the difference that synthetic could make is even less than it was when standard oil recommendation was for 10W-40.

I'm sure others will claim differently, but that has been my experience. I just switched my 06 Sonata to synthetic so I'll report back in 5-6 tankfuls and see if there is any difference. Trouble is, it has now gotten warmer so this will confound the data and I may have to wait until next winter to even begin to try to make a comparison of dino to synthetic.

Matt

As I recall, the scan tool is about $4k and the new fancy computer was about $9k. They're Hyundai special tools, so I expect you may be able to purchase through the dealer, but I cannot see where it would be worth that expense for a vehicle owner.

Furthermore, they may not have the communication speed to show you what you'd need to see for the blower fan problem.

Here's my theory, however. The reason the blower fan would slow momentarily would be a drop in voltage. Usually the things that would cause a momentary voltage drop, you'd know about, such as depressing the brake pedal or activating the turn signals, or turning on the a/c. But there are other items that could cause voltage drops you wouldn't see, such as the computer cycling the a/c compressor on (after turning it off) or the radiator fan coming on.