My 2001 c320 sometimes ask like it will cut off and loses power for few seconds then it revs back up

Possible sticking egr valve

what causes a incorrect gear ratio on a 08 Navigator it makes the truck go into limp mode I can pull over cut the truck off cut it back on and it resets and I'm fine to go sometimes it lasts a few days sometimes a few hours

what codes are being set now

Check the catalytic converter. As the engine heats it up the gunk expands which will cause the problems you are explaining.

Better check the water separators and fuel filters. Also may have lift pump going bad

MAZDAS HAVE OVER REV CUT OFF. IF REVS ARE EXEEDED, PCM CUTS ENGINE POWER SO AS NOT TO DAMAGE ENGINE. ARE REVS INTO THE RED LINE WHEN THIS HAPPENS?

ignition modules can cause problems like this also airflow meters and faulty fuel pumps

try a cam sensor as this monitors timing,could be getting weak and loseing it then repicking up

Hello,

I had the same problem with mine. Disconnect the power seat moduale underneath the seats. Recharge the battery and shouldn't happen again. Providing the battery hasn't worn down past the charging point. Worst case you will have to get a new battery. If you google C320 battery drains you will see hundreds of other peoples posts.

Good Luck

I would try going to one of your local auto parts places first and ask them to hook up a codes scanner and see if there are any codes. If so, which ones and fix the first code first. That will usually fix any other codes as well.

Kenneth Triest