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Old 12-12-2017, 04:32 PM   #1
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Coach won't start

When the key is turned on I get a clicking noise only (engine not turning over). I believe the clicking noise is the vacuum generator. Does this make sense to anyone. Battery is 12.7 volts. 1998 Monaco Diesel Pusher.
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Old 12-12-2017, 04:36 PM   #2
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If all the cable connections are clean and tight from the batteries all the way to the starter, I'd say your problem is with the small slave solenoid that connects power to the starter when you turn the key.
Could be a starter problem but I doubt it.
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Old 12-12-2017, 04:45 PM   #3
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One thing to check before you get to carried away is the switch in the engine compartment.
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Old 12-12-2017, 07:24 PM   #4
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Do you have a battery boost switch ?
try it first:

Battery Boost Switch:
The Battery Boost switch engages
a heavy-duty solenoid to electrically
connect the house batteries to the
engine battery in the event the engine
will not crank or cranks slowly. The
solenoid is designed for short-term high
current intermittent use. Engaging the
boost solenoid for an extended period
will damage the solenoid.
Jump Starting Using the Battery Boost
Switch:
With the ignition key off, press and hold
the Battery Boost switch for ten seconds.
After ten seconds, continue to hold the
switch down and turn on the ignition. If the
engine fails to crank or does not crank fast
enough, discontinue the attempt. Continued
attempts will only diminish any remaining
surface charge in the chassis battery and
end future alternative attempts.
Next, start the generator. This may require
using the Battery Boost switch for the
generator to start from the engine battery.
Once the generator is operating, the
electrical combination of the generator and
the inverter will charge the batteries.


Allow the generator to run approximately
hour before attempting to start the
engine.
After hour of generator operation, leave
the generator on and hold down the Battery
Boost switch for one minute. Release
the switch for one minute, then press the
switch again for one minute. Alternate this
cycle three to five times.
Next, hold the switch down and turn the
ignition on . The battery voltage gauge
should indicate at least 12 Volts. If voltage
is sufficient with the Boost switch held
down, try to start the engine.
If the engine fails to crank or fails to
crank quickly, the chassis battery may be
depleted and the motorhome will require
jump-starting or an external charger hooked
to the chassis battery.
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Old 12-13-2017, 10:24 AM   #5
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Hi ! Welcome to IRV2! We're sure glad you joined the gang!

I can't add anything that others have not already mentioned, but wanted to say hello! Keep her between the ditches!

Good luck, happy trails, and God bless!
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Old 12-13-2017, 11:28 AM   #6
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Thank all of you responders. I really am surprised by all of the responses. This will be fun to be a part of this forum. I have to look into the solenoid responses. The battery boost didn't do anything. I have to figure out where some of these solenoids are. again thank you.
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Old 12-13-2017, 02:16 PM   #7
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Quote:
Originally Posted by Monty 2017 View Post
Thank all of you responders. I really am surprised by all of the responses. This will be fun to be a part of this forum. I have to look into the solenoid responses. The battery boost didn't do anything. I have to figure out where some of these solenoids are. again thank you.
Monty, You might start by following the heavy power cable back from the starter. The slave (small) solenoid will be mounted somewhere in the engine compartment. It is activated by the ignition switch. When it closes, it supply's heavy current to the starter. This one is known to fail. Replacement can be found by taking the old one to any Autoparts Store for them to match up.
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Old 12-13-2017, 06:41 PM   #8
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[ATTACH]185656

This is the start solenoid on my 99 Signature.

Engine bay

Drivers side.

Turn you key to the on position

Go to the back of the coach and jump this solenoid to see if your engine starts.
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Old 12-13-2017, 06:50 PM   #9
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I had the starter itself fail on my '02 DSDP. I was able to get it started a couple times by just turning the key a few times, then it quit completely and had to be towed in for replacement.
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Old 12-22-2017, 10:10 PM   #10
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This reply post is a little late. I found a bad butt connector on the red wire between the battery and the CPU that is under the Allison box up front. The bad butt connector was by the battery. Thanks for all responses.
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Old 12-23-2017, 03:02 PM   #11
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Wow, that must have been a toughie to rack down. But, glad you got it fixed! And thanks for posting the solution.
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Old 12-23-2017, 03:13 PM   #12
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Bad butt connectors are a real common thing!
Have someone hold key over in start position and
go through tugging firmly on all of the cables!
When you get sparks or starts you know you have it!
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