No power to the instrument panel or ignition

[Tom Chace]

Steve,

Yes that is what I have (less the solenoid for now )

Tom

[Steve Huber Co-Admin]

Tom,
With key on, is the transmission panel lit up? If not the ECU is not getting a neutral signal and engine will not start.
Steve

[David T. Richelderfer]

Not only must the transmission shift panel be lighted, but also the gear selection must be neutral (N) for the engine to start.

[Tom Chace]

Steve/Dave

Thank you

Yes, the transmission panel shows N with key to the "ON" position

Tom

[Tom Chace]

OK

So I tried this a few days ago BUT wasn't focused on this as a likely source of the issue.

Went to the coach this morn after reading the latest posts and diligently made sure of neutral
From off I pressed neutral and held it turned key to on to start nothing
held the neutral and turned key from on to start 3 or 4 times when the engine started.

WOW do I hope that was the trick - the coach is now running and I have a small amount of details to cleanup.

Thank You ALL !!!


Tom & Pam

Headed for FLA!

[Tom Chace]

OK

I had the coach running this morning NOW nothing

I did drop a wire from that rear(battery box) solenoid and am not sure of where the wire goes - If anyone has a diagram - can you send it along.

It seems like the ECM or the starter ? I am missing something but I need to get back to square 1 with the solenoid wire

Frustrated in Rhode Island

Tom

[Steve Huber Co-Admin]

Tom,
You may have an intermittent starter solenoid. Ignition switch seems OK based on your previous posts.
Steve

[Tom Chace]

Steve & Dave,

A long day at it - GRR

I have the starter working - even moved the RV so that I could reinstall the onan

The genesis of the problem was electric in nature - I believe since I rattled (gently) the ECM wire harness at the main.
I crawled all over the place to get to wires that haven't been touched since it was new trying to find loose/broken connections.

not going to bore you but the coach starts every time
I am going to get into the ECM a bit more and check it with a meter - check wires - clean up etc...
there could be some corrosion there

Thank You all so very much! I appreciate all of your help

Tom

[Tom Chace]

Steve,

I think that you are correct
I had the coach started this afternoon after:
Cleaned every ground, dielectric greased and re-installed
Checked the ECM - all looking almost brand new - very clean

When the engine was running the starter solenoid heated up?

I will get a new one and swap out.

The battery box solenoid doesn't seem to do anything - I couldn't find any numbers on the wires - very tight in there
Would you know of anyone that has a diagram of the wiring in the coach or is it available on line?

I thought the intermittent might be the trans but that doesn't seem to be the reason - I thought there might be a blown fuse/relay to the Allison I read that from another post on BAC.

Tom Chace

1999 Beaver Montrey
300/330 3126b CAT