Robert U

In the manual for your Cummins engine they show the five conditions that causes the warning light. My problem turned out to be a bad coolant sensor feeding the engine. 
Bob Ulrich 2000 Dip. Sold

When I had my Shepard box rebuilt the shop used a torch to heat the bolts/nut to get them loose.

Bob U  2000 Dip Sold

I didn’t have silver leaf or any monitor system, but when I experienced the stop  engine light for a few seconds on my 2000 Diplomat it was time to replace primary filter. 

Use a water hose to spray different parts of windshield to locate leak. If you have more than one leak it is most  likelyw NOT the lights above. They still makethe gasket as I had mine replaced. I doubt if it is a bad gasket. The body on mh twists and the glass moves. Where are you located?

I had the same problem on my 2000 Dip. I tightened the 3 bolts and it took care of the problem. A few years later the leak returned. I had the lift pump replaced. It cost me about &1000. Did not fix. I had a leaking return line. They repaired it as a final fix. 
Bob U. 2000 Dip

I need part number for the whole unit?

I need the part number for Haldex Pure Air Plus air dryer for 2000 Diplomat. I am sure it  is installed on other Monaco coaches.

Bob U

K9. Air dryer is a Haldex  Pure Air Plus . It may be the same as yours. Don't have part number

Bob U

Replaced air governor. No help. Found the Pure Air Plus filter leaking air. Beat on valve on bottom of filter Now working normal  

Does anyone know the part number for entire filter ?

Bob U 2000 Dip

Hi Nick,I found the air governor on the chassis rail. The line connections are tight and I can't break them loose. Did you spray yours with anything ? I may have to get a longer 1/2" wrench to break them loose easy to get to. Just almost too cold to work on it.

Bob U  2000 Dip

To K9EX

My coach is a 2000 Dip with ISC8.3 Cummings. Where would I look for the governor unloader ?

I started the engine to  build up air pressure so i could retract the slide outs. I only got about 10psi air pressure. About an hour before

I had started the engine with no problems with air buildup. Never had any problems with the air system before.

Bob U

Yes, it will leak. I lost my front cover on my 2000 Dip last February. Search on brand and model for cover. Amazon has them. 

In my Diplomat it is the carbon monoxide sensor. Check the wires for 12  volts. I would replace it with a battery powered one from Home Depot 

Richard, how did you come up with the price of your coach ? Did you use NADA ?

Bob U 2000 Dip

Does anybody have any experience in selling or buying a motorhome thru National Vehicle Corp ? I am selling my 2000 Diplomat 40ft and am trying to get the best price.

Bob U 2000 Dip

I have Yokohamas on rear and Toyo on front. I am happy with them. Only problem is they don’t make a Toyo in 275/70R22.5 anymore. 

I have been trying to get prices for my coach which I may be selling soon. Every time I do a search I end up with some outfit that wants to sell it for me. Not interested it wholesaling it to someone else.

Bob U 2000 Dip

I use T4 in my 2000 Dip since I bought it new in 2000. Have 134,000 miles on the ISC 8.3 engine. In my opinion it is a waste of money to use synthetic oil.

Bob U 2000 Dip

Newmar has my vote 

Bob U 2000 DIP

Tried to start generator a couple days ago and it just made a clicking noise.

I have a 2000 Dip which uses the house batteries to start generator. When I tried to start it all I got was a click. I then used the boost switch and it started right up. I checked the battery voltage and it was 13.6 volts. These are 8 years old Trojan T-105 so I went to Batteries Plus and got a quote of $169 each. OUCH!!! I decided to  rotate the house 12v on/off switch and try starting it again. I t started right up. Moral of the story is check bad connections and on/off switchs before you leap !!! 

Hope this saves you some money.

Bob U 2000 Dip

Black urethane can be purchased at auto parts store. You can lay down blue tape and smooth out the sealer as you go. These glass guys don't care how it looks.

CORRECTION: I just checked the air flow on condenser fan. It blows air out NOT in. Just checked it on my coach. 

Hope this did not cause you any problems.  CRS

Bob U  2000 Dip

Condenser fan pulls air in.

Bob U 2000 Dip