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Old 11-07-2017, 08:24 PM   #1
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Need diagnostic help!

First, I have a 40' Tiffin Phaeton QDH with a 350 Caterpiller motor. Now, my problem; I took my coach on a short 100 mile trip and had zero problems. I arrived home and closed it up as I have for the past ten years. Two days later I started it up and notice some it would not air up. Bought a new governor and put it on. Now my Coach won't turn over. Power all the back to the starter. When you turn the key it makes the normal clicking sounds and all the dash lights come on but will not turn over...I replaced the starter. Same thing. Checked all the fuses and breakers and could find nothing wrong. Batteries are new and tested good. Any suggestions on where I can go from here? Thanks in advance.
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Old 11-07-2017, 08:25 PM   #2
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Also, chassis batteries are turn on.
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Old 11-07-2017, 08:33 PM   #3
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sounds like a solenoid.
In a elctric bay, sometimes on the driver side in front of the front tire, you should find a couple of solenoids. Check if power is passing through when key is turned on. If you find a bad one it needs a constant duty solenoid. NOT a starter solenoid. Power is passing through all the time key is on and a starter solenoid will melt the points in about 20 minutes.
Good luck
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Old 11-07-2017, 08:36 PM   #4
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Check your neutral safety switch. If it doesn't see neutral it will NOT crank. Period
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Old 11-07-2017, 08:37 PM   #5
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Thank you, it reads neutral.
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Old 11-07-2017, 08:41 PM   #6
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Ok, I think I know which solenoids you are talking about. Will check first thing in the morning. Thx
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Old 11-08-2017, 10:14 AM   #7
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Hi Bob! Welcome to IRV2! We're sure glad you joined the gang!

Sorry I can't help with your problem but just wanted to say hello. Keep her between the ditches!

Good luck, happy trails, and God bless!
Joe & Annette
Sometimes I sits and thinks, sometimes I just sits.....
2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD
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Old 11-08-2017, 08:20 PM   #8
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Nuetral safety switch is in the transmission computer.Check fuses for it and also put it in d or r and back into nuetral.Go to the starter and short the little wire to the one that goes to the battery.Should crank.Last could be a bad ikgnition switch,or possibly a relay.In my 03 phaeton fuses and relays behind draws in front console area.Hope this helps......Ronster
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