Helpful Hints

Running an automatic transmission,
--- without a computer.

Got an automatic, but no brain? One little thing that may be a problem for you if you have learned about doing away with the computer on your 95 Dodge area machine. Is that Chrysler used what transmission shops refer to as a 518 in behind the Cummins engine. From what I've been told, it's a Ford car transmission they beefed up a little and installed an overdrive behind it. The guys at the trans shops have told me that they usually go out between 50-120,000 miles depending on how much weight you are moving around. While my trans started acting up at about 40,000 and then I learned what the problem was. The brain. So I got out my shop manual and figured out that there are three wires connecting the computer to the transmission. There is one that supplies 12 volts positive and the other two are grounds for the two solenoids that control the lock ups clutches. Depending if you still route the ground through the brake peddle of not. (I don't because it's just another thing to go wrong and I like to save my brakes by using the engine to help slow down when getting of the freeway.) It's EZ: one ground will lock up the Drive clutch (3rd gear) and the other engages the Overdrive (4th). First and second you have to control by the shifter, but "2"second will shift out of 1st on it's own if you are lazy. When you want third, you drop it in drive and hit the switch to ground the 3rd gear or Drive solenoids. You can ground the 3rd or drive while in first or second if you want because that is what the brain did it anyway. But you've got to remember to disengage the Drive solenoids if you want to stop or you will kill the engine if the switch at the brake peddle doesn't disengage it for you. For 4th-Overdrive, you ground the second ground wire after you have grounded the Drive solenoid. If you want to down shift back to 3rd-Drive, you have to disengage both 3rd-Drive and 4th-over drive because once in 4th-overdrive, it will even stay in 4th-Overdrive even if you've disconnected the ground to 4th-Overdrive until you disengage 3rd-Drive or put it in Neutral. If you get all this you just may have enough brains to save yourself the money that a new computer cost. However, you won't be any speed racer because if you are shifting it manually, you should be backing off the throttle and dropping it in the gears instead of having clutches slipping it into gears every shift. Therefore you won't be doing zero to sixty near as fast as before, but you transmission should not receive near as much ware and tear either. By the way: I've got over 200,000 on the stock transmission because of it. (And I've got a couple years of moving around 16-20,000 lbs. on it.) PS: Some day I may list the colors of wires and what they do, but the wiring harness where made in Mexico and you'll probably find out that you have to go by connector pins shown in the shop manual because they sure didn't list the colors of wires right, or the Mexicans didn't give a damn what color they used.

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Sorry if you have missed them.


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Lots of visits from Canada.

September 9th 2008: This week I revived the Caddy Trunk.


I think it's pretty neat, like a portable pick up I can roll about in my one car garage.


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Helpful Hint: whenever working around car battery's and their connections, don't ware any metallic rings - because if you create abridge to a body or engine block with your ring -  they can turn red hot in a split second. There is nothing like the agony of trying to pull a ring off while it is melting you skin


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Sunday May 13th, 2007: I've been setting the 30 pages for this web-site.

May 15, 2007 this site was uploaded and launched on May 16, 2007.

On August 19th '07 I checked the listing of my patent application at the CIPO and discovered that it was granted on August 7th.

That equals to about another 30 million.

Pretty Cool I'd say.

Beats collecting stamps.

Girls of the Day

© Copyright 2007. All rights reserved.   Dennis James Sattler