Transmission Modulator Control Rod?
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Freshman User
Joined: Nov 2001
Posts: 43
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From: Hartford USA
Transmission Modulator Control Rod?
The other day about 1/2 mile from home, My '91 E-250, 300 auto, stopped shifting. I pulled into my driveway, looked under and saw the modulator had fallen out (don't ask how!) I plugged it back in and fashioned a clamp to keep it in place and added fluid. It shifts, but, slips, or, drags going into 3rd. I had forgotten about the little control rod. It wasn't sticking out of the modulator when it was hanging by the hose. Can it shift without the rod? Will it hurt to drive it on the highway with a minumum of shifting?If so, and I am missing mine, does anyone know the demensions, so I can make one.
I would appreciate any help I can get with this. Thanks, Lloyd
I would appreciate any help I can get with this. Thanks, Lloyd
Posting Guru
Joined: May 2003
Posts: 1,525
Likes: 3
I just walked out to my toolbox and measured a few C6 modulator pins. They are .125 (1/8") diameter and the ones I have run from 1.58 to 1.66 inches long with smooth round ends. A piece of 1/8 welding rod will work fine. Start with a piece about 1.7" long and shorten it a little at a time till you get the shift points you want. The longer rod will shift later and the shift will get earlier as you shorten the rod. If you have a modulator with an adjustment screw you can fine tune it with the screw. Screwing the adjustment in will make the shift later and out makes the shift earlier.
Lead Driver
Joined: Feb 2003
Posts: 8,140
Likes: 4
From: Oak Harbor, OH
You'd have to look at the one in your van to determine the correct one. You may have to actually get them to cross the numbers to see which one you need.
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Senior User
Joined: Oct 2003
Posts: 188
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From: Miami, FL.
Thanks, but I wasn't asking which one I should use.
I was asking if anyone knows what the different colors meant. Could be possible that the differing colors have something to do with how the tranny functions.
Thanks,
Munrow
I was asking if anyone knows what the different colors meant. Could be possible that the differing colors have something to do with how the tranny functions.
Thanks,
Munrow
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