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Old 03-08-2010, 06:18 PM   #1
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Seanmu25 is on a distinguished road
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Posts: 22
Default Valve body? Or..?

2002 Saturn SC1

I recently made my first post, and received a lot of help. Thank you.

Determined that I needed a new intake manifold gasket, which I will replace. It made me start to think...

I started reading more and more posts, and more How-to's. I came across the "reverse slam", and "valve body".

The problem I am getting is this:

The car has a very very slight slam into reverse, only when first warming up. The car shifts up just fine. However, it seems to forget to down-shift while braking, until less than 10-20mphs. The car will get a surge of RPM (normally 2500RPM) then drop back down to the normal 1900RPM.

Is this a cause of the vacuum loss? Or, is it something else - like the valve body?

And once it has reached 5-8mph, and I am braking the following happens: While downshifting into the "1st gear", the car will get a "crunch" from the driver side tire location.

My buddy told me that is probably from a warped rotor. What do you guys think?

Thank you in advanced for your insight and help.

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