check engine light super rough idle
Thread Starter
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Laughing Gas
Joined: May 2012
Posts: 855
Likes: 5
From: Central Oregon
check engine light super rough idle
Well went down to the fridays for a quick drink and dinner, took my 7.3 she drove great.
Anyways on my wayout, I start my truck up and it was idling extremly rough, and when i would drive it she had very low power. And major lag to shift through gears. The check engine light was on, I do not have a scanner. I was only 3 miles from home so I drove her home but she was MAD at me.
Please any info is appreciated
Anyways on my wayout, I start my truck up and it was idling extremly rough, and when i would drive it she had very low power. And major lag to shift through gears. The check engine light was on, I do not have a scanner. I was only 3 miles from home so I drove her home but she was MAD at me.
Please any info is appreciated
Thread Starter
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Laughing Gas
Joined: May 2012
Posts: 855
Likes: 5
From: Central Oregon
I searched and read that checking UVCH by looking at the connectors to see if there is any visible damage with the pins possible melting. I will do this I also read that oil can damage these connectors, possible my diesel fuel leak cooked em?
Would this affect the tranny shift points.
Im also having a hard time locating the UVCH where is it located in the engine compartment.
Post Fiend
Joined: Dec 2009
Posts: 15,505
Likes: 18
From: Livoina,La
With the engine being low on power it can effect the shift points
On each valve cover gasket you'll see two plugs going to each cover. Pull them and look really good for burnt/melted pins/plugs
It also would be good to pull the valve cover and chech the wiring going to the injectors
On each valve cover gasket you'll see two plugs going to each cover. Pull them and look really good for burnt/melted pins/plugs
It also would be good to pull the valve cover and chech the wiring going to the injectors
Post Fiend
Joined: Dec 2009
Posts: 15,505
Likes: 18
From: Livoina,La
Thread Starter
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Laughing Gas
Joined: May 2012
Posts: 855
Likes: 5
From: Central Oregon
With the engine being low on power it can effect the shift points
On each valve cover gasket you'll see two plugs going to each cover. Pull them and look really good for burnt/melted pins/plugs
It also would be good to pull the valve cover and chech the wiring going to the injectors
On each valve cover gasket you'll see two plugs going to each cover. Pull them and look really good for burnt/melted pins/plugs
It also would be good to pull the valve cover and chech the wiring going to the injectors
With pulling the valve cover I'm assuming it would be wise to replace the valve cover gasket?
When I inspect the Injector wiring, what am I looking for exposed wires?
Thank you so much for the link. A picture says a thousand words.
this is my first diesel I apologize for all the NOOB questions. There not gonna stop for a long time though, but its amazing what Ive learned in a year though.
Looks like my forth is planned out
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Hotshot
Joined: Feb 2009
Posts: 10,408
Likes: 75
From: Plankinton, SD
Voltage can be checked. Injectors should be about 3.2 each, gp's should be about 1ohm each.
You don't need to replace the gasket if there is no burnt pins, but chances are there are.
You don't need to replace the gasket if there is no burnt pins, but chances are there are.
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Thread Starter
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Laughing Gas
Joined: May 2012
Posts: 855
Likes: 5
From: Central Oregon
.
Ok, well I visually inspected all the UVCH all looked great except one had some clear fluid on the plastic part of the male connectors, other than that they looked good.
I took the IDM off and shook it around sounds dry in there. But when looking at the connectors some of the smaller post have some yellow dry looking battery acid looking chemical on them0. Also there is like some clear grease like chemical on one of the four larger post of the IDM connections.
So I any other ideas??? I havent found any shorts in the wires yet.
Time for a code reader?
And if anyone has insight of how to post pics, ive searched checked stickys but most likely have overlooked.
I took the IDM off and shook it around sounds dry in there. But when looking at the connectors some of the smaller post have some yellow dry looking battery acid looking chemical on them0. Also there is like some clear grease like chemical on one of the four larger post of the IDM connections.
So I any other ideas??? I havent found any shorts in the wires yet.
Time for a code reader?
And if anyone has insight of how to post pics, ive searched checked stickys but most likely have overlooked.
Thread Starter
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Laughing Gas
Joined: May 2012
Posts: 855
Likes: 5
From: Central Oregon
A picture of grease on large post and battery like acid on smaller ones of the IDM
Another picture of the yellow stuff on the IDM post
Look at this bare wire is this right?
Clear fluid on UCVH
Another picture of the yellow stuff on the IDM post
Look at this bare wire is this right?
Clear fluid on UCVH
Thread Starter
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Laughing Gas
Joined: May 2012
Posts: 855
Likes: 5
From: Central Oregon
No none of the vc plugs were burnt, did you see the pic with vc plug that had the small layer of fluid on it?
Is that normal as well?
Yeah my next purchase is a code reader
