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Old 10-19-2014, 05:28 PM   #15
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I have a small ISB 340 HP Cummings with 6.7L, and it does really good down hill with a tail wind. de Sanford PS uphill is a 180 degree tribulation 3.7 mpg.
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Old 10-19-2014, 06:49 PM   #16
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I feel special. I've got an ISC in my coach (weighs in at about 28,000 the way we travel) and my ScanGauge tells me consistently I get 10.0mpg (but we don't tow) and I've validated that a number of times. I cruise at between 62 and 68 depending upon where in the country (slower in California where the trucks are limited to 55mph, faster in areas where there's no big rig limits).

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Old 10-20-2014, 08:52 AM   #17
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I feel special. I've got an ISC in my coach (weighs in at about 28,000 the way we travel) and my ScanGauge tells me consistently I get 10.0mpg (but we don't tow) and I've validated that a number of times. I cruise at between 62 and 68 depending upon where in the country (slower in California where the trucks are limited to 55mph, faster in areas where there's no big rig limits).

Steve

Certainly good MPG and attests to your driving ability. Like me, having an engine built before the EPA got heavy into regulating diesel emissions is a big help to economy. The EGR valve was one of the first add ons and it certainly affected economy.


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Old 10-20-2014, 09:44 AM   #18
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thanks rethfeo to all
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Old 10-21-2014, 07:23 AM   #19
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As others have stated , your Cummins is probably an ISC; information you can confirm by getting the engine serial number, from the data plate on the timing gear cover and calling Cummins Care.
1-800-343-7357
1-800-Diesels.
I called Cummins with esn number45847450 they tell me it is ISB6.7 L.Thanks for the replyes
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Old 10-21-2014, 08:52 AM   #20
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I called Cummins with esn number45847450 they tell me it is ISB6.7 L.Thanks for the replyes


OK, I'll have to check, because I thought 2000 vintage ISBs were only 5.9l and the 6.7l version was 2007 and newer.
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Old 10-21-2014, 09:05 AM   #21
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OK, I'll have to check, because I thought 2000 vintage ISBs were only 5.9l and the 6.7l version was 2007 and newer.
Yeah, I have to agree. I bought a Dodge Diesel pickup in Jan of 2007 and got the last of the 5.9s as Cummins was trying to use up the remaining inventory before they rolled out the 6.7 emissions motors that required DEF.
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Old 10-22-2014, 09:12 AM   #22
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Unhappy rethfeo

I called cumming they say isb but think they are wrong .Going to take it to a shop to find out what the heck I have .???2000 40ft American eagle . Thanks to who replied rethfeo/Mike
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Old 10-22-2014, 09:50 AM   #23
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I called cumming they say isb but think they are wrong .Going to take it to a shop to find out what the heck I have .???2000 40ft American eagle . Thanks to who replied rethfeo/Mike

Here is the brochure for your coach.

It specifies a Cummins ISC as standard with no option listed.

This is what I expected from your coach vintage.

http://fleetwoodrv.com/frvlibrary/do.../2000_ae_b.pdf


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Old 10-22-2014, 10:00 AM   #24
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If you haven't had the coach for long there is a remote possibility, someone installed a 6.7 ISB, BUT, all those engine were produced with the HPCR ( High Pressure Common Rail ) fuel system, as opposed to the 2000 ISB's ; VP-44 or the ISC's ; CAPS systems, so it would be a complicated change over to say the least.
Did the engine data plate have a production date for the engine on it ?
Could you post some pictures of the engine , showing the fuel injection pump and the fuel supply tubes to the cylinder head, or the data plate ?
Maybe we can save you a trip to the shop.
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Old 10-22-2014, 01:05 PM   #25
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Does anyone know how Cummins does serial numbers? Are they at all like VIN numbers where a portion of it identifies the model of the engine?

I only ask because my serial number is 4586xxxx -- so not very far off (which could also be the case for sequential numbering since my chassis was assembled by Spartan in late 1999)

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Old 10-22-2014, 01:09 PM   #26
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Another thought... the American Coach is built on a Spartan Chassis, right? If you email the VIN to Spartan, I bet great folks there will repond with how the chassis left their shop (Engine and Transmission serial numbers) within a day.

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Old 10-24-2014, 07:24 AM   #27
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Here is the brochure for your coach.

It specifies a Cummins ISC as standard with no option listed.

This is what I expected from your coach vintage.

http://fleetwoodrv.com/frvlibrary/do.../2000_ae_b.pdf


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Steve thanks so much for the Brochure
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Old 10-24-2014, 07:53 AM   #28
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Steve I want to Thank YOU very much for taking time out of your day to provide me with all the information & researcher that you have done. Thank YOU So Much You are so AWESOME!
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