You didn't mention what year but if it is 95 or newer, that has the 4T65E trans in it. As Brian mentioned, it uses a pressure control solenoid. I have seen problems where the pc solenoid sticks at times (it is a pulse width modulated solenoid rather than an 'on/off' style). When it sticks, the pressures are not what the computer has calculated them to be and shift times will be longer than the computer expects. To compensate for this, the computer changes it's adapt table to increase pressure to try to bring the shift time down. The problem happens when the solenoid does not stick, these increased pressures cause hard shifts. Eventually, the computer will store a P1811 code, max adapts/long shift times and will no longer try to modulate pressure and let the trans run full pressure, making all shifts harsh. A p1811 code generally will not turn on the 'service engine soon' light since the government requirement is that only things that effect emissions turn the light on... harsh shifts do not increase emissions, so no light.
They redesigned the PC solenoid around 2006 but I have seen the same problems with the new ones but it is much less common. Also, the valve behind the solenoid has been known to stick so whoever changes the solenoid for you, make sure the try moving this valve when the solenoid is out and that is moves smoothly against the spring pressure.
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]
Today's Featured Article - An AC Model M Crawler - by Anthony West. Neil Atkins is a man in his late thirties, a mild and patient character who talks fondly of his farming heritage. He farms around a hundred and fifty acres of arable land, in a village called Southam, located just outside Leamington Spa in Warwickshire. The soil is a rich dark brown and is well looked after. unlike some areas in the midlands it is also fairly flat, broken only by hedgerows and the occasional valley and brook. A copse of wildbreaking silver birch and oak trees surround the top si
... [Read Article]
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy
TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.
