2394 exhaust temp

1948 mm · Dec 15, 2014

I have a 2394 that the exhaust temp gauge maxes out. I replaced the pyrometer probe no change so i swapped out the gauge cluster no change. I was wondering if there was ever a problem with these where you had to soldier in a resistor to fix this problem. Thanks

Case Nutty 1660 · Dec 15, 2014

get/borrow a laser temp gun and check the temp, have you checked the air system for a restriction? lots of black smoke? fuel rack sticking open, out of time?

1948 mm · Dec 15, 2014

I have checked the millivolts with a meter and it is correct with the bag graph. What is not correct is the temp compared to the m.v. reading. I have replaced the turbo along with the muffler checked the timing which is at 25 btc verified the dampner has not slipped bythe chisle marks and verified the cam gear is not worn by prying on the gear through the rpm sensor hole in the tim9ng cover. I also ran it on the dyno to verify hp at 180 which is high for the tractor but it should bevable to handle an extra 20 hp. I believev there might be a service bulletin out there for a resistor i just need to find it.

Case Nutty 1660 · Dec 15, 2014

guess it could be, I have worked on exhaust temp systems since 67 and have never seen a resistor in any of them as they are a closed system, but I am sure someone will have a idea much different than mine

dwag · Dec 15, 2014

Seen your problem many times. Check pump timing with a QUALITY diesel timing light, can be a big difference between static and actual pump timing. A light can be rented from Spencer Diesel.

Agri King · Dec 15, 2014

Is the wiring harness damaged somewhere between the gauge and the exhaust probe?

1948 mm · Dec 15, 2014

It could be timing as it is a used pump. Pump starts good runs good and doesn't smoke excessivly but could have internal timing off as we don't have a light to test it with. Thanks

1370rod · Dec 15, 2014

Everyone has good suggestions. Does the gauge go to max before the engine is working hard? A good place to start would be to confirm with another instrument want the temp is while operating.

Case Nutty 1660 · Dec 15, 2014

Rod you and I are thinking the same way lol

timbernt · Dec 15, 2014

If you figure out I hope you will post the result because my 2394 does the same thing. I have ignored it hoping it was not real.

1370rod · Dec 15, 2014

OMG Tom, That is scary isn't it! LOL.

LJKCK · Dec 16, 2014

Dad's 2594 had the temp gauge max out chopping corn 7 or so years ago and he called and asked what I thought was wrong since he thought it was running fine but maybe a bit smokier than usual. I stopped after work and gave it a look over and found the turbo cold housing loose just by touching it. When we pulled the hose off you could see the wheel had contacted the housing on the cold side and it wasn't getting the air it wanted and the exhaust was being held back more from the resistance from the rubbing. The bearings were good,just the housing worked loose. A new turbo and away she went!

Ron Sa · Dec 16, 2014

Is the air filter plugged?

Agri King · Dec 17, 2014

LJKCK, That is a good idea, I have seen that happen also. It's something that should be checked.

2394 exhaust temp

1948 mm

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Case Nutty 1660

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1948 mm

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Case Nutty 1660

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dwag

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Agri King

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1948 mm

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1370rod

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Case Nutty 1660

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timbernt

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1370rod

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LJKCK

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Ron Sa

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