|
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
| Order Support
Today's Featured Article -
The Engine Rebuild Kit - by Curtis Von Fange. I always liked engine rebuild kits. They have all the replacement parts for overhauling an engine without going to the store to get gaskets, special measuring tools, or miscellaneous parts. They come neatly packaged, clean and tidy. But it's important not to let that packaging lull you into a false sense of security. The appearance of matching sleeves, pistons, rings, and bearings can cause frustration and agony if not properly measured and installed in a workshop environment. Following c
... [Read Article]
Latest Ad:
one 8n and one 9n tractor. totaly restored,pretty much everything is new. one 6ft blade good shape.
[More Ads]
Copyright © 1997-2026 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 |
|
