UVCH tricks
Hotshot
Joined: Mar 2014
Posts: 10,750
Likes: 1,065
From: Douglassville, PA
If the OEM UVCH was as great as what some here think it would outlast valves and piston rings.
Face it, the design of our injectors and the electronic controls (specifically the UVCH) are entirely inadequate to last half the expected 50% life of the engine! "Engineers" decided that these parts are "routine maintenance items" and that most buyers would trade in @ 100k.
Makes sense to the marketing idiots, but defeats the reason most of us went with the 7.3.
Ford FAIL - as has been every diesel they have produced since (most with more significant shortcomings)! God forbid Navistar or Ford apply the criteria that made the old DT466 medium duty diesel dependable over a couple million miles to a consumer PU that cost nearly as much.
Still, the 7.3 in spite of her faults, is the most suited to my uses, and I intend to run her till she goes **** up!
Face it, the design of our injectors and the electronic controls (specifically the UVCH) are entirely inadequate to last half the expected 50% life of the engine! "Engineers" decided that these parts are "routine maintenance items" and that most buyers would trade in @ 100k.
Makes sense to the marketing idiots, but defeats the reason most of us went with the 7.3.
Ford FAIL - as has been every diesel they have produced since (most with more significant shortcomings)! God forbid Navistar or Ford apply the criteria that made the old DT466 medium duty diesel dependable over a couple million miles to a consumer PU that cost nearly as much.
Still, the 7.3 in spite of her faults, is the most suited to my uses, and I intend to run her till she goes **** up!
Tuned
Joined: May 2016
Posts: 432
Likes: 48
From: Colorado Front Range
Laughing Gas
Joined: Jan 2007
Posts: 870
Likes: 9
From: Carbondale, CO
Looking to replace glow plugs, and some other maintenance soon. Been following this and other threads about UVCH preference and quality. My UVCH is original with quarters added @ 2009. Runs great, but have a couple glow plugs out, and got some funny readings through the 42 pin. At this point I guess I would default to OEM, but still have some time.
Hopefully others with real world experience will chime in.
Hopefully others with real world experience will chime in.
Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
The OBS 7.3 had issues with their UVCH, which had two plugs per head. The pins would end up getting burned on those connectors. The single connector per side was the upgrade to the harness, which happened to come loose at times.
Nothing against Pete, but sometimes what works on paper and in the lab for the engineers doesn't quite work as well in the real world. The upgraded harnesses available for these trucks are designed to help prevent the connection from coming loose. The OBS guys sometimes upgrade to the Super Duty harness to avoid the burnt pins in their connections.
Thread Starter
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Fleet Mechanic
Joined: Apr 2015
Posts: 1,264
Likes: 7
I got new harnesses from riff raff, they havnt came in yet.
but to keep things moving around the yard, ive put this thing back together,
thoroughly cleaned the harness and gasket and super glued them together.
truck runs great now, except for the fact that the CEL came back on late lastnight, I havnt hooked the scanner to it yet
but to keep things moving around the yard, ive put this thing back together,
thoroughly cleaned the harness and gasket and super glued them together.
truck runs great now, except for the fact that the CEL came back on late lastnight, I havnt hooked the scanner to it yet
Senior User
Joined: Oct 2010
Posts: 259
Likes: 1
From: Powell, wy
If the OEM UVCH was as great as what some here think it would outlast valves and piston rings.
Face it, the design of our injectors and the electronic controls (specifically the UVCH) are entirely inadequate to last half the expected 50% life of the engine! "Engineers" decided that these parts are "routine maintenance items" and that most buyers would trade in @ 100k.
Makes sense to the marketing idiots, but defeats the reason most of us went with the 7.3.
Ford FAIL - as has been every diesel they have produced since (most with more significant shortcomings)! God forbid Navistar or Ford apply the criteria that made the old DT466 medium duty diesel dependable over a couple million miles to a consumer PU that cost nearly as much.
Still, the 7.3 in spite of her faults, is the most suited to my uses, and I intend to run her till she goes **** up!
Face it, the design of our injectors and the electronic controls (specifically the UVCH) are entirely inadequate to last half the expected 50% life of the engine! "Engineers" decided that these parts are "routine maintenance items" and that most buyers would trade in @ 100k.
Makes sense to the marketing idiots, but defeats the reason most of us went with the 7.3.
Ford FAIL - as has been every diesel they have produced since (most with more significant shortcomings)! God forbid Navistar or Ford apply the criteria that made the old DT466 medium duty diesel dependable over a couple million miles to a consumer PU that cost nearly as much.
Still, the 7.3 in spite of her faults, is the most suited to my uses, and I intend to run her till she goes **** up!
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