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Old 09-26-2020, 12:58 PM   #1
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2011 ISB 6.7 starting problem question

Turn ignition to start will not turn engine. Leave ignition on jumper to relay and solenoid starts right up.
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Old 09-26-2020, 02:19 PM   #2
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Are you jumping the solenoid at the starter , or jumping the starter relay , that feeds the starter solenoid.
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Old 09-26-2020, 02:57 PM   #3
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I have jumped it at the starter and there is relay in my back compartment also, That I jumped from what looks like a solenoid to the relay there. It starts from either place.
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Old 09-26-2020, 03:47 PM   #4
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The starter relay in the compartment , needs to see a ground supplied from the trans controller ( indicating trans in neutral ) and power from the ignition key .
Can you have someone hold the ignition in the start position while you check for power at the small posts , with a volt meter or 12 volt test light .

Can you add more info about your coach ; chassis manufacturer? diesel pusher ? Trans model ?

If you can post a photo of the compartment relay , I can probably give more help .
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Old 09-26-2020, 04:39 PM   #5
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It is a 2011 Tiffin allegro RED, allison 2500 transmission. Attached is the photo upper left corner is the relay and on the right corner is what I am jumping from. The 2 relays there have switched them around they are same no change. Running my jumper solenoid in the upper right of picture. Thanks
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Old 09-26-2020, 04:42 PM   #6
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Ken picture didn't come through , did you resize it ? 640 pixels works best for me , and wait till the attachment box says " download complete."

Is the RED a front engine diesel chassis ?
Does your 2500 series have a push button or lever shifter?
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Old 09-26-2020, 04:42 PM   #7
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PictureClick image for larger version

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Old 09-26-2020, 04:46 PM   #8
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Quote:
Originally Posted by Ken M View Post
OK I'm seeing it now .
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Old 09-26-2020, 04:55 PM   #9
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Were both still viewing the posts so you maybe typing while I am.

Back to my questions about chassis and shifter .

Some members with Freightliner chassis and an Arens shifter , see photo of side of trans ( 2500 series ) have had issues with the shift motor blowing fuses and not completing shifts . Does this look anything like the side of your trans?
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Old 09-26-2020, 04:57 PM   #10
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When you do get the engine started , can you drive the coach normally ?
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Old 09-26-2020, 06:51 PM   #11
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Yes it does look like that and it drives normally.
Thanks for your time
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Old 09-26-2020, 08:06 PM   #12
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It is freightliner chassis XC.
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Old 09-27-2020, 12:00 AM   #13
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Check the wire harness connection at the transmission for corrosion.
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Old 09-27-2020, 12:09 AM   #14
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You'll need to contact Freightliner for wiring/testing info on the shift mechanism .
We need to consider that the shifter may not be providing a " neutral safety signal " to the starter relay to allow the engine to be started by the key .

Have your chassis serial number handy and call .
1-800-385-4357

If you get the info and have any problems with diagnosis , send me a private message and I'll do what I can to help.
With three others having issues with the Arens shift mechanism , I'm detecting a trend .

http://www.irv2.com/forums/f125/2100...on-490151.html
http://www.irv2.com/forums/f125/spor...ml#post5433091
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