Transmission Torque Converter Shudder or Engine Misfire ??? GET IT RIGHT how to diagnose a shudder

[@chrisjackson6046]

Great advice. I developed a shudder on mr 2006 Aura RL that started when climbing grades in top gear. I misdiagnosed it and replaced the convertor. Problem remained. Turns out I got some counterfeit plugs(NGK copies) on Amazon and they had failed after 30k. I didn't think it was a miss because no light came on. Thanks.

[@garybray3614]

2008 GMC with 6.2. Horrible shake on takeoff from stop sign. Vibrate like tire out of balance at 40+ MPH. I do not believe in additives as such. Only one that worked for me was on worn out engine was STP that made the oil thick. I dumped in Lube Gard Stutter that comes in red tube. The stutter was immediately gone and month later has not come back. I am still in disbelief this worked. Don't have a clue how long will last, but very happy for now. I have nothing to do with making any money with this endorsement of this product.

[@christophermiller8894]

I know some shops that would have just replaced the torque converter like the customer requested without doing any diagnoses. They get paid whether it fixes the problem or not...

[@user-yf4hv8vr3q]

This is why we need to keep with maintenance, not only when things break

[@derekp6636]

Nice, looked like damage on the coil too. Guess I'm saving for a scan tool!

[@codemansauto208]

Video coming soon on an AUTEL scanner things i like and dislike

[@THESMARTERMAN555]

3.6 motor, they were lucky it didnt need a head.

[@lvbaby1104]

Had spark plug changed today didn’t help at all

[@steves203]

What scan tool is that in the video?

[@codemansauto208]

we are planning on making an " AUTEL" video on the things we like and dislike, please watch out for this upcoming video

[@xavierdeabreu1991]

Hi thanks for video, quick question Can it do this at low rpm like when you stop and give gas to get going again?

[@codemansauto208]

yes it could misfire at low RPM

[@thisthatwhatsup-mh3hq]

I was just wondering why you didn't change all the coils and the spark plugs at the same time since it looked pretty old. I'm sure probably money but if the guy has money he should have been recommended I guess I don't know. Again I guess it comes down to money I'm sure it's expensive. If it's not broke don't fix it

[@codemansauto208]

We diagnose vehicles then contact the customer with different options and then they tell us what to do from there