2006 Monaco Diplomat Lift Pump

[MarisaHicks]

Need location for lift pump and relay on 2006 Monaco.

[wolfe10]

Marisa,

Please tell us what engine you have.

[dickandlois]

Brett, She posted an ISL in her Not starting thread.

Rich.

[wolfe10]

Marisa,

I don't know if this link will work for you, but it is a breakdown of the fuel transfer pump for our 2003 ISL:

https://qsol2.cummins.com/qs3/portal/parts/option_detail.html?path=/qs3/parts/99/z/06.05/fs9340

[dickandlois]

Marisa, There is one more item that you might check.

If changing the filter did not clear the problem and the system is priming, thinking that would eliminate the lift pump.

The starting issue-is it after the coach has been setting for a period of time?

Should this be the case then you might have a problem the the intake manifold per-heater circuit. This would cause the problem when cold, if it starts when it is hot / warm then this would also point the the per-heater.

I did forget to ask this question when you made your first post.

Rich.

[jleamont]

I replaced my lift pump a year ago. It was located on the passenger side of the engine (opposite the turbo) on the side of the engine almost at the transmission. Mine had a two steel lines connected to the top, and several rubber hoses. The worst part of the replacement was hanging down and working while laying on the floor in the bedroom. The pump cost around $340. I was told it had been redesigned several times and they finally got it right around 2012. I was told the same pump is used on almost every on highway Cummins from 2000-2012, not sure how accurate that info is, the Navistar dealer I bought it from had 4 in stock,that seemed strange to me.