confirmation on dead injector
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Tuned
Joined: May 2021
Posts: 363
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From: Montana
confirmation on dead injector
I posted a thread a few days back thinking my torque converter was bad, though the miss got worse pretty quick and was difficult to start and wouldn't idle.
I replaced the UVCH and valve cover gaskets, several wires, especially to glow plugs, were in bad shape. Fired it up and the miss is still there. #3 wasn't putting out much of any oil, seemed to improve a little after it ran for a minute or two, though oil output definitely looks diminished compared to others.
CCT kicked out P0269 (#3 imbalance) and a few buzz tests put out code P1273 (#3 high low open), though all the injectors, including #3, buzz fine.
Just want to confirm I'm not missing anything and that #3 is dead/dying. Is there anything else I should do to rule out wiring issues or can I assume the mechanical side of the injector is kaput?
I replaced the UVCH and valve cover gaskets, several wires, especially to glow plugs, were in bad shape. Fired it up and the miss is still there. #3 wasn't putting out much of any oil, seemed to improve a little after it ran for a minute or two, though oil output definitely looks diminished compared to others.
CCT kicked out P0269 (#3 imbalance) and a few buzz tests put out code P1273 (#3 high low open), though all the injectors, including #3, buzz fine.
Just want to confirm I'm not missing anything and that #3 is dead/dying. Is there anything else I should do to rule out wiring issues or can I assume the mechanical side of the injector is kaput?
Lead Driver
Joined: Oct 2005
Posts: 6,129
Likes: 1,919
From: Ponca City, OK
If you have a high low open code then you're probably dealing w/ a wiring issue. That code won't(shouldn't) pop up because of a performance issue. If you haven't checked continuity between the 42 pin and the IDM connector that would be my next suggestion. There is a pinout for the IDM connector in the tech section explaining the procedure.
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Tuned
Joined: May 2021
Posts: 363
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From: Montana
That code popped up a few times after changing the uvch then didn't come back up on subsequent buzz tests.
My thought was that if it buzzed fine it was getting juice. I'll check out that 42 pin.
My thought was that if it buzzed fine it was getting juice. I'll check out that 42 pin.
Lead Driver
Joined: Oct 2005
Posts: 6,129
Likes: 1,919
From: Ponca City, OK
Have you checked the resistance across all the injector solenoids? I believe the spec is 2.8-3.5 ohm's, I may be a little off but should be in that ballpark. Truthfully consistency is the most important. Also if you haven't already check the 42 pin for wear or damage at the driver's valve cover. The placement of the injector wires in the connector tend to put them in the line of fire if/when the harness rubs on the valve cover. If it does turn out to be the injector showing it age, a lot of folks have had good luck switching to synthetic oil. The lighter cold temp viscosity help w/ flow through the injectors.
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Tuned
Joined: May 2021
Posts: 363
Likes: 121
From: Montana
I haven't ohmed out the injectors, I was trying to skip steps thinking that the lack of oil at the injector combined with a good buzz ruled out other items.
No visible chaffing at the 42 pin.
I'll bring out the multimeter tomorrow AM.
Thanks for your input, much appreciated.
No visible chaffing at the 42 pin.
I'll bring out the multimeter tomorrow AM.
Thanks for your input, much appreciated.
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