wont start with key switch

[drlarsen56]

just bought a 2004 kountry star with a 330-cat diesel it won't start using the ignition switch, I can start it by turning key switch on and then jumping it on starter solenoid. I thought ignition switch could be bad so replaced it and key set still no luck.
Only thing i did to it was clean all the corrosion of house batteries

Thanks in advance

[MrMark52]

Originally Posted by drlarsen56

just bought a 2004 kountry star with a 330-cat diesel it won't start using the ignition switch, I can start it by turning key switch on and then jumping it on starter solenoid. I thought ignition switch could be bad so replaced it and key set still no luck.
Only thing i did to it was clean all the corrosion of house batteries

Thanks in advance

Time to find a chassis wiring diagram for your coach - and a house wiring diagram while your at it - you’ll need them both at some point or another.

Take a look in the Files section above. What you need just might be in there.

[Skip426]

You problem is probably the starter relay ( I've replaced mine twice ) type of relay and location are chassis manufacturer specific .

The relay takes a signal from the ignition switch and trans controller , and will only pass power to the starter solenoid , when it sees the transmission is in neutral.

What chassis is your coach built on ?

[Tha_Rooster]

Originally Posted by drlarsen56

just bought a 2004 kountry star with a 330-cat diesel it won't start using the ignition switch, I can start it by turning key switch on and then jumping it on starter solenoid. I thought ignition switch could be bad so replaced it and key set still no luck.

Only thing i did to it was clean all the corrosion of house batteries



Thanks in advance

It’s your relay between key and starter. Look around on top of frame rail beside motor generally on passenger side.

[Skip426]

Ok Freightliner chassis , with Cat engine.

When my starter relay failed Freightliner sent me the pdf below , with the part description and cross reference . Your coach being years newer may not take the same part. That may take a call to Freightliner to confirm.

My relay is mounted on a plate on the outside of the passenger side frame rail behind the dual wheels ; only visible from under the coach . Picture below .

[Tha_Rooster]

[nehog]

Originally Posted by drlarsen56

just bought a 2004 kountry star with a 330-cat diesel it won't start using the ignition switch, I can start it by turning key switch on and then jumping it on starter solenoid. I thought ignition switch could be bad so replaced it and key set still no luck.
Only thing i did to it was clean all the corrosion of house batteries

Thanks in advance

Almost sure this rig has a start relay... If you can find a wiring diagram that will tell you if there is a relay. If no diagram available then you may be able to trace it out with a wire tracer... You can get a good one from Amazon.

[twinboat]

You need to go back to the battery terminals and look for a small gauge wire that got left off or placed on a negetive terminal.

Also follow them to check for a dirty inline fuse connection.

Does your transmission panel light up ? If not, that power wire may be on the battery terminal. No trans controller, no start.

[Skip426]

Originally Posted by twinboat

You need to go back to the battery terminals and look for a small gauge wire that got left off or placed on a negative terminal.

Also follow them to check for a dirty inline fuse connection.

Does your transmission panel light up ? If not, that power wire may be on the battery terminal. No trans controller, no start.

Always best to have more sets of eyes looking at a problem .
twinboat, has asked questions that I forgot to ask .