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  #1  
Old 03-28-2013, 02:50 PM
RABPRO RABPRO is offline
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Join Date: Mar 2013
Location: LAUGHLIN, NV
Posts: 3
Gender: Male
Vehicle: 2003 RAM 2500X4 DIESEL
Trim Level: SL
Color: GOLD
Engine: 2001-2003 359ci (5.9L HO) Cummins ISB 24-Valve Diesel I6 245hp 505lb/ft (6-Speed Manual)
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Default Vacuum leak

I have a small vacuum pump mounted on the pas. side of the firewall which has started to cycle on and of every 30 seconds or so. It looks like it controls the speed control and maybe some heat/air functions.

The pump is creating vacuum, but if you turn it off at key, the vacuum drops off.

So I'm looking for a vacuum leak. The truck is 10 years old.

Has anyone found a common part failure or any fitting which may of dried out and cracked?

I guess the other possibility is a leak in the pump.

RAB
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Old 04-10-2013, 12:08 AM
RABPRO RABPRO is offline
Dodge Ram Forum Newcomer
 
Join Date: Mar 2013
Location: LAUGHLIN, NV
Posts: 3
Gender: Male
Vehicle: 2003 RAM 2500X4 DIESEL
Trim Level: SL
Color: GOLD
Engine: 2001-2003 359ci (5.9L HO) Cummins ISB 24-Valve Diesel I6 245hp 505lb/ft (6-Speed Manual)
Rep Power: 0
Rep:10
RABPRO is on a distinguished road
Default

Hi all, after researching and reading as mainy post as possible, I found one from a google search on another forum.
The poster stated that he had a vacuum loss and found the hose running under the bat. on the driver side to the speed control unit had a leak.
Sure enought the hose was dry and bittle and had cracked.
I tried patching the hose by slipping a new hose over the broken area, but none of may patches held the vacuum.
My final solution was to use some .25 inch drip irriagation tube and a couple of fitting.
The fix was able to hold vacuum for three days after the engine had been shut off.
I routed the new hose away from the engine to shield it from the heat.
For now all is working great.
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