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-   -   High EGTs at idle (https://www.dieselbombers.com/12-valve-2nd-gen-dodge-cummins-94-98/26770-high-egts-idle.html)

daveO 05-19-2009 07:55 AM

Well, I'm gonna head over to my shop today, I'm gonna check the air filter/exhaust for restrictions, check/adjust my valve lash, and mess with my starwheel and AFC housing a little bit.

94 12valve 05-19-2009 11:00 AM

the afc and starwheel are not gonna help your hot idle issue

daveO 05-19-2009 04:17 PM

Someone suggested the AFC thing to me, and it made sense when he said it, but now that you mention, it makes sense that it wouldn't too.

94 12valve 05-19-2009 06:43 PM

the acf will make a difference when you hit the pedal but not at idle ... how was your valve lash?

relay93 05-19-2009 07:06 PM

I know that when I bought my EGT gauge it was matched to the thermocouple. I wonder if you have the right thermocouple to gauge setup. I know the vendor sent you another but how did you check to see if it was somewhat accurate. You could always bring some water to boil and put the thermocouple in the boiling water to see what the gauge reads should be 212. This is not for complete accuracy but should be close.

biged681985 05-19-2009 08:05 PM

some one may have put something in each of your stacks, bot enough to keep it from running, but enough to cause restriction. just a sugestion. hope ya get it figured out. u didnt cut the excess off of the pyro line did you?

daveO 05-19-2009 08:28 PM

Unfortunately, didn't get to the valve lash today, a buddy conned me into doing his brakes so he could pass inspection. Gonna get to it tomorrow.

Relay93: Good idea on the boiling water thing, never thought of it. I'll have to give that a try too.

Stacks look clear, still blow out plenty of smoke. I also left the 100 extra feet of pyro probe wires intact.

2500HeavyDuty 05-19-2009 11:11 PM


Originally Posted by daveO (Post 339601)
Unfortunately, didn't get to the valve lash today, a buddy conned me into doing his brakes so he could pass inspection. Gonna get to it tomorrow.

Relay93: Good idea on the boiling water thing, never thought of it. I'll have to give that a try too.

Stacks look clear, still blow out plenty of smoke. I also left the 100 extra feet of pyro probe wires intact.


100 feet?

estrada5.9 05-19-2009 11:53 PM

Im sure it was about 200 feet he is just being modest

daveO 05-20-2009 08:47 AM


Originally Posted by estrada5.9 (Post 339692)
Im sure it was about 200 feet he is just being modest

Yep, you got it! Ok, maybe I was exaggerating a little. :w2:


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