2006 frightliner when I build max pressure it doesnt release all at once

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Adamprov3nch3r, Jan 20, 2021.

  1. Adamprov3nch3r

    Adamprov3nch3r Bobtail Member

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    I have a 2006 frightliner ive put a new dryer and New govoner several months ago and its been working fine. Well then a week ago or so I some how blew all my coolant out the resivor overflow hose and over heated... Well somehow im pretty positive is my thermostats getting stuck closed or maybe water pump went out idk i replaced both because after i overheated and tried to wait tell morning add more coolant because resivor emptied out and then the resivor would stay super cold and so would top hose going to radiator... Well after they replaced water pump Nd thermostat now my air system isn't purging the air off right. Instead of one solid sphh! Every so often it goes sssssssssssspppppppppppppphhhhhhhhhhhhhhhhhhhh for about 20 seconds about once every 2 minutes sitting at idle. It starts doing it at the normal psi and it drops down to the normal psi it just takes a super long time to purge.... Also problem is when im going down the road at 75 the airs building faster then it can release so im having to hit breaks to release pressure
     
    Rideandrepair Thanks this.
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  3. BoxCarKidd

    BoxCarKidd Road Train Member

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    Does your truck have the governor on the compressor or the front of the air tank?
     
    Rideandrepair Thanks this.
  4. Adamprov3nch3r

    Adamprov3nch3r Bobtail Member

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    Im pretty positive on the compressor only thing on tank really is pressure valve
     
    Rideandrepair Thanks this.
  5. BoxCarKidd

    BoxCarKidd Road Train Member

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    You replaced it but do not know where it is at?
    Good luck with that.
     
  6. Adamprov3nch3r

    Adamprov3nch3r Bobtail Member

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    Im sorry let me say again. I had someone replace that because i didnt know what I was doing? I do what i can?
     
  7. BoxCarKidd

    BoxCarKidd Road Train Member

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    I interpreted " ive put " as you did the work.
    I interpreted " they replaced " as you paid someone to do that work.
    With pictures of the front of your left air tank and your air compressor someone maybe able to advise you how to proceed.
     
  8. Adamprov3nch3r

    Adamprov3nch3r Bobtail Member

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    Thankyou very much and will send post ASAP because having to hold the seat air gun out the window and tap on the breaks is annoying as hell
     
  9. Adamprov3nch3r

    Adamprov3nch3r Bobtail Member

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    the govoner is on the very front of the tank
     
  10. BoxCarKidd

    BoxCarKidd Road Train Member

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    I have limited experience with those. Some one else can surely help you with that more than I now that they know what you have.
    Make sure the small line from the governor to the compressor is not stopped up. If you unhook that line from the compressor at 135 PSI and it has air to it I believe the compressor is at fault.
     
  11. Adamprov3nch3r

    Adamprov3nch3r Bobtail Member

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