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Ask go-west.. Your Own Question
go-west.., Technician
Category: Medium and Heavy Trucks
Satisfied Customers: 1196
Experience:  Technican with 20 years experience focused on engines and electrical.
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I have a Cummins ISC 275HP engine in my motorhome. While

Customer Question

I have a Cummins ISC 275HP engine in my motorhome. While driving the amber engine light and bell came on momentarily...and the the red stop engine light also blinked on. No loss of power or anything.. Happened twice today... Have driven 400 miles over past few days with no issue..Any ideas?
JA: What is the complete model and serial number of your machine?
Customer: Assuming you mean the Engine not the vin.#
JA: Anything else you want the equipment mechanic to know before I connect you?
Customer: looking for engine number on paperwork...I think the engine may be running a little warmer than normal too...
Submitted: 10 months ago.
Category: Medium and Heavy Trucks
Customer: replied 10 months ago.
engine serial # 45803130
Expert:  go-west.. replied 10 months ago.

good afternoon

do you have the fault codes possibly ?

if not then the most common possibly here is coolant level,inspect and made sure its on the high side of the expansion tank,Let me know how you do..

Customer: replied 10 months ago.
I do not have access to any Fault Codes. I check the coolant at the beginning of each day and top of the overflow tank if needed. I have gotten the lights and bells in the past. In the past it is been a fuel issue. Last year I had the first fuel pump replaced. Before this trip I had it serviced at Cummins and all filters were changed including the Fuel filter. The first two days of the trip went fine. Yesterday we stopped at Flying J and fueled up. 30 miles later when I got off the highway was the first recent occurrence. It happened as I was almost was up to road speed. after making a turn. I will try to get to Cummins in Charleston SC to see if they can put it on the computer and check the fault code. Wondering is it could be a lose wire or such. Hoping it's not the fuel pump again...that was $1000+
Expert:  go-west.. replied 10 months ago.


When the fuel pump went was is causing the stop engine light to come on to ??

Customer: replied 10 months ago.
Probably...but it goes on and off so quick... the first time it happened... I did lose power and it was the fuel I figured I got a bad tank of fuel..since then, every time the oil is change I change the fuel filter to be on the safe side. Oddly...when the fuel pump was replace the engines was running fine, the computer showed a fuel restriction... Cummins said that it should have a filter before the first pump...but of course that was something they were not interested in doing.
Customer: replied 10 months ago.
This time there appeared to be no loss of power..
Expert:  go-west.. replied 10 months ago.


what year is this motorhome ,we may able to get get codes from the dash eh ?

Customer: replied 10 months ago.
2000 Gulfstream Motorhome... Chassis and Engine are 1999.. the dash only has a rectangle panel with idiot lights
Customer: replied 10 months ago.
As you can imagine, it's not a confidence builder when you are on day 3 of a 31 day trip.
Expert:  go-west.. replied 10 months ago.

No doubt..

Have a look under your dash were they plug into the connector with there computer

sometimes beside it there is a chk eng button,if you have one then we can check for codes..

Customer: replied 10 months ago.
will have to look all around.. think it was in an outside compartment as there is little access under the dash.. will let you know if I find anything.
Expert:  go-west.. replied 10 months ago.

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