|
Tractor Talk Discussion Board |
92 GMC Fails Emmissions
[ Expand ] [ View Follow Ups ] [ Post Followup ] [ Return to Forum ]
Posted by Farmer Paul in Ontario on July 06, 2005 at 05:57:01 from (65.93.41.154):
My old truck has failed emmissions twice now and is giving me fits. The truck is 1/2 ton 5 litre ( 305 ) with TBI. It passed at idle; but at speed the HC is over the limit of 79ppm my reading is 110 ppm. I have changed plugs, wires,cap ,rotor, coil, 02 sensor, and the egr solenoid,air cleaner ,fuel filter,and the timing is bang on. The truck will surge when travelling at low speed, it will also do this at highway speed from time to time. But it is itermitent. My dealer tells me if i have done all these thing it should pass, well it doesn't. I tested the EGR valve by pulling the vac line an it runs smooth, apply vac to the valve and I can stall the engine. The only other things I can think of are injectors and fuel pump ( dealer say if the pump is weak it would not even run ). A friend says it could even be caused by a faulty ECM. Any help would be appeciated.
Follow Ups:
Home
| Forums
Today's Featured Article -
Good As New - by Bill Goodwin. In the summer of 1995, my father, Russ Goodwin, and I acquired the 1945 Farmall B that my grandfather used as an overseer on a farm in Waynesboro, Georgia. After my grandfather’s death in 1955, J.P. Rollins, son of the landowner, used the tractor. In the winter 1985, while in his possession the engine block cracked and was unrepairable. He had told my father
... [Read Article]
Latest Ad:
2022 John Deere 5045E, 4wd, front end loader and 3rd function with grapple. 120 hrs, 55k new, must sell
[More Ads]
Copyright © 1997-2024 Yesterday's Tractor Co.
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. Yesterday's Tractors - Antique Tractor HeadquartersWebsite Accessibility Policy |
|
