12 Valve 2nd Gen Dodge Cummins 94-98 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps

Why is there hissing and black smoke from under the front end??

Old Mar 2, 2010 | 06:00 AM
  #11  
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idk my 97 dosent have hydroboost i would think to check the vac pump too
 
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Old Mar 2, 2010 | 08:23 AM
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Originally Posted by lunk
is it smoke or steam on cold days its steam your seeing from warm ingine air hitting cold air so no worrys
Oh I suppose thats possible? Its been in the 20's here during the day.. perhaps thats what it is then? I could swear it had a blackish tint to it

Originally Posted by c0zgrove
idk my 97 dosent have hydroboost i would think to check the vac pump too
Where would the vac pump be located?
 
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Old Mar 2, 2010 | 11:31 AM
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its the half of the power steering pump towards the front of the truck.
 
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Old Mar 2, 2010 | 01:32 PM
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Actually, 300K *is* a lot. It may have a cummins in it... but it's still a Dodge.
 

Last edited by Threesixty; Mar 2, 2010 at 02:35 PM.
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Old Mar 2, 2010 | 01:41 PM
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haha THANK you. I just can't say it around dodge people.
 
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Old Mar 2, 2010 | 02:02 PM
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I was messing with the truck today. Pretty positive no hydroboost. The pedal feels car-like, and the brakes/powersteering dont intertwine I dont think.

Good. My hydroboost on my psd was a pain in the ***
 
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Old Mar 2, 2010 | 08:57 PM
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then yeah you do have a vac pump, someone correct me but i'm almost sure it only runs the brakes.
 
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Old Mar 3, 2010 | 07:10 AM
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It doesnt run the hvac or anything?
 
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Old Mar 3, 2010 | 10:04 AM
  #19  
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Vacumn runs the HVAC 4wd actuator as well as the cruise control I think.
 
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Old Mar 3, 2010 | 10:40 AM
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Ohhh thats got me wondering. The cruise control doesn't engage (but the light on the wheel will turn on), and I cant control where the heater directs the heat. Sounds like I may have inadvertantly found the solution to 2 other problems here...
Now to track down that scandellous leak!
 
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