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Old 07-08-2009, 10:36 PM   #1 (permalink)
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Diagnostic codes (T444E)

I am currently working on an International bus (3800 series) that is powered by an T444E engine.o

The truck has two problems.

Glow off relay goes on , off, on, off for a couple of seconds ( believe bad GP, already changed the GP Module)

When it starts it idles bad for a second or two (knocking sound) but then works great.

I don't know if this is a "repost" but i am wondering is someone could help me with a list of the diagnostic codes or redirect me to a page where i can find this.

Many thanks in advance,

Shandre
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Old 07-09-2009, 12:45 AM   #2 (permalink)
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Glow off relay goes on , off, on, off for a couple of seconds ( believe bad GP, already changed the GP Module)
Your Glow Plug module should go on for about 15 seconds when 1st starting then it cycles on-off-on -off for up to 2 minutes, this depends on the ambient temperature, at 70* it will go for about 5 seconds. If you have bad glow plugs the on cycle can be as short as 2 seconds.


Quote:
When it starts it idles bad for a second or two (knocking sound) but then works great.
When was the oil changed last ? Does it take more than about 2-3 seconds to start ? Dirty oil can cause that. A leaking injector could cause the knocking on startup.


Don't know about IH but you have to have the correct scanner to read the codes on the Ford IH engines. Don't know what year you have, but here is web sites for codes.

Go here

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Old 07-09-2009, 09:47 AM   #3 (permalink)
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Originally Posted by Bill1013 View Post
Your Glow Plug module should go on for about 15 seconds when 1st starting then it cycles on-off-on -off for up to 2 minutes, this depends on the ambient temperature, at 70* it will go for about 5 seconds. If you have bad glow plugs the on cycle can be as short as 2 seconds.
Well the relay goes on for 1 second then goes off. This happens for about 10 to 15 seconds. The temperature here is has an avg of 85 Fahrenheit. As you stated i believe that there might be a couple of bad glow plugs
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Old 07-09-2009, 10:01 AM   #4 (permalink)
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Originally Posted by Bill1013 View Post
When was the oil changed last ? Does it take more than about 2-3 seconds to start ? Dirty oil can cause that. A leaking injector could cause the knocking on startup.

It has been while since the oil has been change, this afternoon it will get a much needed service.

This morning i took off the driver side valve cover and discovered that a connector was loose. I plugged it back in and the truck started ok now without the knocking.
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