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Old 01-24-2004, 10:21 PM
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200-4R Problem

Hey Everyone!

So, I got a 200-4R in my 87 Buick Wagon. Problem is when it shifts to third it falls flat on its face. Overdrive is enough to kill any power. I think it actually goes slower! The funny thing is that its fine in first and second. The tranny has a B&M Shift Improver kit in it. I'm trying to think of why.

Thanks for the help
Jordan

It also likes to jump between third and od a lot. Thought that might help!

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Old 01-25-2004, 08:09 AM
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Cool

i would wonder if you have an engine problem if it loses power as you describe.

Perhaps a clogged exhaust?
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Old 01-25-2004, 04:22 PM
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Never thought of it that way....

Guess thats next on the checklist!

Thanks
Jordan
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Old 01-25-2004, 05:43 PM
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Crosley is one of three on Hotrodders who definitely get my attention when it comes to transmissions.

I would have never thought of his above statement, until it happened to me.

I had almost every part of the exhaust system replaced on my van, and eventually it completely choked off the catalytic converter, the ONLY part that wasn't replaced. The converter was completely plugged and the resulting back pressure was causing the flex joint springs on the exhaust manifolt to allow the pressure to escape. Perfect reason why the exhaust hissed from under the front of the vehicle.

I cut it out and the van ran better than in the previous year.

Flaked rust from the inside of the pipe somewhere in the line could also come to the point to where it could choke off the exhaust system, so it is not an impossibility.

You just don't hear of it like other problems.
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Old 01-27-2004, 12:08 PM
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Well, got the cat cut out today!
The car definately idles smoother, and its got more punch in first and second. Third and OD aren't much better, but they are a little. I wonder if its a TV cable thing?

Thanks for everything!
Jordan
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Old 01-27-2004, 06:33 PM
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Quote:
Originally posted by j_labossiere
Well, got the cat cut out today!
The car definately idles smoother, and its got more punch in first and second. Third and OD aren't much better, but they are a little. I wonder if its a TV cable thing?

Thanks for everything!
Jordan
It idles smoother, but is it running right now? If the cat was plugged or partially plugged for a while, I would check the pipes in front also. I have seen them break down in front of the cat when the cat plugs. Possibly from the added heat? I am not an expert on exhaust, but have seen that happen. If the engine is not operating properly, the transmission usually won't either. The extra pressure on the accelerator will make the transmission shift differently than it should. A simple test is to start the vehicle up cold. Check the pressure at the exhaust when it is first started. After letting it warm up, check to see if there is a noticeable change in the exhaust pressure. You should also check it after or during above idle operation. If the exhaust is partially plugged, it may be flowing enough for idle, but that added needs above idle may be too much. A good exhaust shop can also check the exhaust by checking the temperatures of the pipes. Many times they just figure that they got rid of the problems with the cat.
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