02 Sienna changed timing belt, now low power.

1334 Views 1 Reply 2 Participants Last post by happycamper, Apr 27, 2015

f18cmech

Discussion Starter · Apr 27, 2015

Hi,
I have a 2002 XLE Sienna, and after changing the timing belt I noticed that there doesn't seem to be much high end power, like trying to pass on the freeway. I did notice that I had a hard time getting the teeth to line up on the crank sprocket when the marks were lined up, so I rotated the crank just a little to get the teeth on. Then I installed the hyrdaulic tensioner and put everything back together. My thought is maybe I ended up being off one tooth, but would this cause low power??

Thanks for your input

Save

1 - 2 of 2 Posts

happycamper

· #2 · Apr 27, 2015

It is very possible that you are off a tooth. After installing the belt, did you rotate the engine by hand a couple of revolutions to check the marks? Sometimes it is possible to inadvertently end up with slack between two pulleys.
I once had a belt that would always be off at least a tooth after rotating by hand, even though the marks were correct. After three failed attempts, I rotated the crank pulley so it was off a tooth, then installed the belt. This time the timing was correct after rotating the engine by hand.

Save

1 - 2 of 2 Posts

This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.

Top Contributors this Month