Severe Jolt During Normal Driving

[Genspec14]

Do you notice if your engine revs dip when this happens? This happened in my Mazda 6 at lower speed (e.g. coming to a stop light). There was a bad coil pack that caused a misfire. However, electric issues, fuel pumps, transmission slips and more can cause this behavior.

I bought one of the cheap ODB scanners (Bluedriver) to use on my 2006 Mazda 6. While this does not replace a higher end scan tool, you can at least see for yourself the various codes being sent.

Also, you said you had your car in the shop. What this a dealer, Hyundai shop, major chain?

Anytime you have a tough problem in a car, taking to a dealer may be better. I don't think dealers are any better than others at routine repairs, but with difficult problems, their experience can help.

I would have to say there’s also a minor dip in power but just as quick as the rest. It is at a Hyundai dealership right now. They obviously don’t know what to do unless they actually feel it themselves and have their scanner connected at the time. I just might buy my own scanner and do this myself of course I could report what code if any to them but I just think that they’re gonna wanna experience it themselves. I asked that they now communicate with corporate because with anybody else that experienced this and had their gauge cluster replaced as the solution, it will all be logged.

 

[Genspec14]

Hello, just thought I would close this discussion so to speak. My dealership decided they would address this issue by changing out the transmission fluid. (@ 75K miles I wanted to do this anyway) They didn't replace the filter which I find disturbing but... So far a couple of hundred miles later, the issue is gone. To me it's not very logical but I'm old school from when things that cars do made logical sense. I remain concerned but I'm pleased that the issue went away. On to the next issue I guess.

 

[tprjimmi]

Good to hear! Quite a difference from my solution. My car has been fine since the repair so... Best wishes

 

[joegr]

...They didn't replace the filter which I find disturbing but...

There are lots of opinions on this, but mine is that if that filter/screen really needs to be replaced, then so does the transmission.