The reason you may not have had codes is some codes need to mature into actual faults. Some codes mature faster, especially after a battery disconnect because the monitor responsible for that code must meet certain enabling criteria. The P0420 needs to the have catalyst monitor armed which means highway driving for at least 5 minutes at 55 mph after a warm-up from a cold start. Some set sooner, like the misfire monitor. In order to turn on MIL for misfire the misfires need to reach a level in an rpm window that federal law says will increase emissions too much. What they say is too much and what you say, which is it doesn't run bad are two different things. The PCM is not "seeing" the crank speed up enough relative to the cam after the combustion event. This could be an issue with air, fuel or spark in that cylinder. It's pointing you to cylinder #1. The efficiency code, P0420, doesn't mean it needs a catalytic converter. It could be as simple as a set of plugs. Without raw data from a diagnostic tool there is only so much you can do. When the converter is cold hit the bottom with a rubber mallet and see if it rattles. Hope this helps. Gerard
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 - A Farmall Story - by Ed Meadors. The year was 1978. Our young family had recently moved to rural Chesapeake, Virginia to a plot of land which would finally allow us to realize our dreams of a huge garden, critters and more lawn and pasture than we would ever use! We needed a TRACTOR; not a riding mower or tractor wannabe, but a real TRACTOR. The answer to our needs materialized in the form of a '44 Farmall A, complete with cultivators, discs, single plow, a 5ft.Woods belly mower and one, mounted spare 9.00x24 rear wheel.
... [Read Article]
Latest Ad:
Sell 1958 Hi-Altitude Massey Fergerson tractor, original condition. three point hitch pto engine, Runs well, photos available upon request
[More Ads]
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.