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Topic: Red Engine Stop light - any connection to recent Hydro Hot work (Read 605 times) previous topic - next topic

Red Engine Stop light - any connection to recent Hydro Hot work

Hi there,

Our HH was leaking and the mobile mech said we needed a new engine heater pump, when he tried to install the HH was still leaking so he opted not reconnect the pump; also not sure what else was not reconnected inside the HH.  Could there be any connection to our engine sensor and the HH?  The coach was sitting for a little over three weeks previously we had started and not had any issues until the work on the HH.  Today the engine was cold and the light came on immediately.  We added some coolant and restarted - the engine the sensor went off for about 5-10 seconds and then remained on after that?

Any thoughts - could there be a connection or just crazy coincidence.  We have a 2007 Cummins 400 ISL the engine sounds fine...

Kath & Mike

 
Thanks,
Kath & Mike
2007 Foretravel Nimbus 336
Toad 2022 Jeep Gladiator Overland edition

Re: Red Engine Stop light - any connection to recent Hydro Hot work

Reply #1 –
Does the Nimbus have the ability (via under dash momentary switches) to at least get a blink code for the Stop Engine light?

That's a fairly serious light.  It could be caused by any myriad of faults, and unless you know what the problem is, you risk damaging the engine.

I would not operate the coach until you know what code is causing it and Cummins tells you how to proceed.
Learn every day, but especially from the experiences of others. It's cheaper!  - John C. Bogle

2000 U320 36' non-slide / WildEBeest Rescue
2003 U320

Re: Red Engine Stop light - any connection to recent Hydro Hot work

Reply #2 –
Quote from: Kath and Mike Reinert –
...could there be a connection or just crazy coincidence.
Gibbs Rule 39: There is no such thing as a coincidence.
1993 U280 SE 40' WTBI, Build: 4359
C8.3 300hp, 6-Speed, Exhaust Brake
960 watts on the roof (6 x 160)
Sorento (or BOLT) on a Kar Kaddy SS
"Nature abhors a vacuum"

Re: Red Engine Stop light - any connection to recent Hydro Hot work

Reply #3 –
Any other warning lights?  We recently had the 3 engine lights - engine maint, check engine and stop engine - all come on.  It was a loose wiring harness.  This is in a 2004 ISL.
Larry Rubin
2004 U295 38' build 6278
2014 Jeep Cherokee

Re: Red Engine Stop light - any connection to recent Hydro Hot work

Reply #4 –
Mike,  The engine preheat pump circulates main engine coolant throught the HH to preheat the engine in very cold weather.  Otherwise, it is never turned on.

The coolant leaking from an engine preheat pump is main engine coolant.  So this leak needs to be solved before travel.  One can remove the line going to the pump and, after removing the line coming from the pump to the heater, attach that line to the heater inlet barb.  You will get engine heat while traveling but no engine preheat.

You can remove both engine coolant lines from the HH and loop them together.  There will be no engine heat for the HH coolant but no main engine coolant leak either.

Hope this helps.
Rudy Legett
2003 U320 4010 ISM 450 hp
2001 U320 4220 ISM 450 hp
1995 U320 M11 400 hp
1990 Granvilla 300 hp 3208T
Aqua Hot Service Houston and Southeast Texas

Re: Red Engine Stop light - any connection to recent Hydro Hot work

Reply #5 –
Not sure about the newer models, but on my 96 the engine coolant lines had to be pinched shut to prevent 16 gallons of engine coolant from coming out. Don't ask how I know this...........

Larry
Larry Warren
1996  U320 36' SBID "Lola" sold 2020
Build #4970
Motorcade #18318

Re: Red Engine Stop light - any connection to recent Hydro Hot work

Reply #6 –
Good chance the low coolant sensor  is showing low coolant.  I would look there first. 

You can buy a code reader that will tell you what the codes are that is causing the stop engine.
2014 ih45  (4th Foretravel owned)
 1997 36' U295 Sold in 2020, owned for 19 years
  U240 36' Sold to insurance company after melting in garage fire
    33' Foretravel on Dodge Chassis  Sold very long time ago

Re: Red Engine Stop light - any connection to recent Hydro Hot work

Reply #7 –
Quote from: turbojack –
Good chance the low coolant sensor  is showing low coolant.  I would look there first. 

You can buy a code reader that will tell you what the codes are that is causing the stop engine.
On mine with a bad level sensor it would start and run 30 seconds then shut down
Scott
 

Re: Red Engine Stop light - any connection to recent Hydro Hot work

Reply #8 –
Quick update - Rudy was correct the engine was drained of coolant when the mobile mech tried to replace the engine preheat pump (and the sensor was corroded and was replaced.)  We took our coach to RV Master Tech in Glendale AZ - highly recommend if you have hydro/aqua hot issues - they also work on HWH.  The tech Lee is very knowledgeable.  Turned out we had several pinhole leaks, a bad switch and the coolant had not been replaced in a very long time.  We should have Sully back on the road in the next week or so.
Thanks,
Kath & Mike
2007 Foretravel Nimbus 336
Toad 2022 Jeep Gladiator Overland edition