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2000 Forester
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36 Posts
Discussion Starter #1
Thought I had this cleared up with the fluid change. Guess not.

I've done four 4-quart changes a few days apart, so the fluid should be good. And I've changed the filter.

Whenever the transmission down shifts for power, I get a harsh jolt. I think this is happening at 4-3 and/or 3-2. I often get the jolt as well on the subsequent up shift.

Taking off from a standstill and accelerating through the gears is smooth, even at full throttle. So is the down shifting that occurs when I slow down. It's only the down shift for accelerating that causes the jolt.

I've read through everything I can find on this site, but most posts seem to pertain to the newer direct control transmissions.

Any ideas?

Thanks
 

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2001 Forester S automatic
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37 Posts
I had a similar problem in my '02 with 130K. I changed the front and rear differential oil and added half a bottle of Motorcraft friction modifier to each. It didn't completely eliminate the hard shifting or slipping, but it have me about 80-90% improvement or so. I was surprised how much it helped. It's cheap, so it's worth a shot.
 

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2005 Forester X
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77 Posts
My 05 w/auto does this too. Its not very smooth shifting under load. It only has 46k on it.
 

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Registered
2000 Forester
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36 Posts
Discussion Starter #4
Thought I had this cleared up with the fluid change. Guess not.

I've done four 4-quart changes a few days apart, so the fluid should be good. And I've changed the filter.

Whenever the transmission down shifts for power, I get a harsh jolt. I think this is happening at 4-3 and/or 3-2. I often get the jolt as well on the subsequent up shift.
After driving it longer it seems that the jolt is from 3 going to to 2, and often again on the upshift.

I'm going to try the gear oil tonight if it doesn't rain. Hope it helps.
 

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8,844 Posts
What filter and fluid did you use?

Also make sure the trans actually has enough fluid, slightly low fluid could cause some similar issues.
 

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Registered
2000 Forester
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36 Posts
Discussion Starter #7
I had a similar problem in my '02 with 130K. I changed the front and rear differential oil and added half a bottle of Motorcraft friction modifier to each.
It helped a bit, but not enough. It still slams pretty hard and chirps tires from time to time.

I've had two mechanics (not trans specialists) suggest a solenoid problem. So I'm going to check into that next.
 
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