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09-15-2019, 06:28 PM
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#1
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Junior Member
Join Date: Jun 2013
Posts: 5
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Engine light on, no codes
Hi, I have a 2003 Holiday Rambler Admiral on a Workhorse chassis. The 'Service Engine Soon' light bounces from blinking to being solid, both with no error codes showing on the computer. It drives fine with no issues. I had 2 potential buyers scared off because of the light. Went to two separate mechanics, both no codes and no idea on how to fix this.
Any help would be appreciated. Thanks
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09-17-2019, 12:01 AM
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#2
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Senior Member
Join Date: Apr 2011
Location: Powell River, B.C.
Posts: 31,486
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I'm not sure about the Workhorse chassis dash warning system , but do you have a separate " oil change reminder light " or warning in a digital display .
Just asking , because " Service Engine Soon " sounds more like an oil change reminder than a " Check Engine " light that; when flashing in particular; would definitely set codes.
__________________
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
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10-02-2019, 01:39 PM
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#3
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Registered User
Join Date: Aug 2016
Location: Seattle,WA/HB,CA./Fujieda-Japan
Posts: 849
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Sounds like a short in the light circuit. Ground issue?
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10-02-2019, 07:58 PM
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#4
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Senior Member
Monaco Owners Club Workhorse Chassis Owner
Join Date: Aug 2002
Location: Clovis, CA, USA
Posts: 13,149
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Turn the ignition switch to the on position but don't start.
Press the accelerator to the floor three times within about five seconds.
Turn off the ignition.
That is how you clear the oil change reminder. I don't know if that's your problem but it can't hurt to try it.
__________________
2004 Monaco La Palma 36DBD, W22, 8.1, 7.1 MPG
2000 LEXUS RX300 FWD 22MPG 4020 LBS
Criticism is easier than Craftsmanship
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10-02-2019, 08:10 PM
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#5
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Senior Member
Winnebago Owners Club Workhorse Chassis Owner
Join Date: Aug 2007
Location: Sonoma County, CA
Posts: 6,401
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This is how it is done on my Honda CRV:
- Turn the ignition to the “II” position by turning the key.
- Turn the ignition to the “OFF” position, then push and hold in the Odometer “Reset/Trip” button.
- Continue to hold the Odometer “Reset/Trip” button wile turning the ignition back to the “II” position.
Maybe something this might work?
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Wayne & Roberta
08 Winnebago Destination 39W Gas UFO Workhorse Chassis......It's really weird being the same age as old people. I thought getting old would take much longer.
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10-02-2019, 08:10 PM
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#6
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Senior Member
Gulf Streamers Club Ford Super Duty Owner
Join Date: Aug 2015
Location: Memphis, TN
Posts: 4,343
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RE: SES Light
Quote:
Originally Posted by cdeshensky
Hi, I have a 2003 Holiday Rambler Admiral on a Workhorse chassis. The 'Service Engine Soon' light bounces from blinking to being solid, both with no error codes showing on the computer. It drives fine with no issues. I had 2 potential buyers scared off because of the light. Went to two separate mechanics, both no codes and no idea on how to fix this.
Any help would be appreciated. Thanks
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Mine is a Ford GAS, but my book says if SES light is FLASHING, shut down immediately or risk transmission damage. If trans overheating? Is Trans wiring rodent or road hazard damaged? Is Trans fluid OK, color and level?
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(TerryH.) 2000-GS Conquest Limited 6266 Class-C 99-E450SD V10 
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10-02-2019, 09:49 PM
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#7
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Senior Member
Monaco Owners Club Workhorse Chassis Owner
Join Date: Aug 2002
Location: Clovis, CA, USA
Posts: 13,149
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Have the spark plug wires ever been changed? Might be getting misfires.
__________________
2004 Monaco La Palma 36DBD, W22, 8.1, 7.1 MPG
2000 LEXUS RX300 FWD 22MPG 4020 LBS
Criticism is easier than Craftsmanship
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10-02-2019, 11:54 PM
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#8
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Senior Member
Gulf Streamers Club Ford Super Duty Owner
Join Date: Aug 2015
Location: Memphis, TN
Posts: 4,343
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(From what I read) about the more expensive code readers, the diff is that they will read codes for AIR BAGS, ABS, and a few other non-engine accessories? SUSPICION is that they are non-engine codes that your cheaper reader cannot read, and you need a Dealer/ good Truck shop w/ the better equipment? LUCK to ya :-)
__________________
(TerryH.) 2000-GS Conquest Limited 6266 Class-C 99-E450SD V10
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10-03-2019, 10:29 PM
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#9
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Junior Member
Join Date: Jun 2013
Posts: 5
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Thanks all. It was an knock sensor that didn't throw a code. I had been to a couple of mechanics with good code machines. They found it by accident
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10-03-2019, 10:32 PM
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#10
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Senior Member
Monaco Owners Club Workhorse Chassis Owner
Join Date: Aug 2002
Location: Clovis, CA, USA
Posts: 13,149
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Thanks for the update, glad to hear you found the problem.
__________________
2004 Monaco La Palma 36DBD, W22, 8.1, 7.1 MPG
2000 LEXUS RX300 FWD 22MPG 4020 LBS
Criticism is easier than Craftsmanship
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10-05-2019, 11:03 PM
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#11
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Registered User
Join Date: Jul 2013
Location: Somerset, Ky
Posts: 256
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