Camry Forums - Toyota Camry Forum - 2010 Camry jerking and high rpm

Quote:

Originally Posted by toyomoho (Post 97885)

Try the following:

If possible to safely do this without over revving engine. When the problems occurs, shift trans from D to S and determine if the issue goes away.

And

When in D and the problem occurs, keep foot on gas and tap brake pedal enough to turn on brake light switch. Braking (turning on brake electrical switch) should disengage the lockup clutch system. Determine if problem goes away.

Would speculate the problem is a torque converter lock up system issue.

The trans has a valve that physically controls lockup (done mechanically) via trans hydraulic pressure. The valve action is controlled by the engine computer.

Flex lockup is lockup that is not full on or off. This system is in addition to the typically full on or off lockup mode.

Toyota has had a lot of issues with rumbling, jerking, etc with the flex lockup system. They issued a few service bulletins however can't find anything for 2010.

The fix for rumbling was a replacement "improved" converter.

The revving could be the torque converter slipping when going between freewheeling and lockup mode.

As to fixing the issue don't know for sure. Speculate a bad torque converter.

A bad torque converter (without the added flex lock) can cause rumbling, jerking and slipping.

The issue is lots of owners have complained about jerking, rumbling, etc which has been linked to the flex system and torque converter.

If your trans wasn't slipping would state a flex lock problem.

Either way the torque converter lock up clutch may have issues.

Thanks, I'll try the techniques you mentioned. Just wondering, is it safe for the engine to drive in S4 mode as much as possible? If it comes down to the TC, just not sure its worth the repair cost to fix it.