1990 bmy 923a2

[Suprman]

There are a few ctis problem/solve threads I dont know how to link but if you tell me what its doing or not doing I can tell you how to fix it

 

[bigboy44]

There are a few ctis problem/solve threads I dont know how to link but if you tell me what its doing or not doing I can tell you how to fix it

Suprman, I haven't even tried to plug it in since I don't know how it operates and I haven't got to the TM yet either. I am still in check out mode. I do remember reading not to plug it in when the switch is on if I remember correct. Thanks for any advice in advance.

 

[Suprman]

It will automatically come on and when the system sees 120psi in the tanks it will do a pressure test then try to fill at hwy pressure. Plug it in and start it up and see what happens

 

[bigboy44]

Nice truck. If you stand on the drivers tire and look at the engine data plate on top is the date of manufacture I bet you will find that it's a new motor from 08 or 09

Dec. 08 is what is on the tag!

 

[Suprman]

Kansas does a real nice job rebuilding the trucks. The date on the triangle door tags is when they rebuilt it.

 

[bigboy44]

There are a few ctis problem/solve threads I dont know how to link but if you tell me what its doing or not doing I can tell you how to fix it

I tried the CTIS, I started the truck and let the air build to 120 then turned it off and plugged up the CTIS then restarted the truck. Aii I could get was the 5 flashing lights, I tried to press different settings but they did not do any tire adjustments. I could hear a blow off of some kind and the buttons would highlight when pressed but did not appear to do anything, I even tried driving the truck around but nothing!

 

[Suprman]

It sounds like you have a fill side air leak. Go to the wheel valves there will be a standard schrader valve press each one and see if a little air escapes. If not the wheels probably have schrader valves installed in the stem. If air comes out then you have to look for an air leak. The system does pressure tests you will hear the air escaping usually from a wheel valve or one of the lines going to the hub. Someone can sit in the cab and press the hwy button it will do the pressure check and you can go from wheel to wheel looking for the leak.

 

[bigboy44]

Suprman, thanks I will try that asap.