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Engine Discussion of preventative/corrective maintenance and other technical issues regarding your coach's engine.

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  #1  
Old 01-02-2012
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Bumpersbird Bumpersbird is offline
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Default 95 PT 42 S-60 Won't Start

Happy New Year to all.

Today is the first day I have been able to get out to the shop to work and play with the coach.

After a knee transplant Nov 8th. feeling OK still a little sore and range of motion still limited but ya can only sit on the poarch for so long until ya have to gitt'r done!

I was going to pull the coach out of the barn but she won't start. I have good power on chassie and house batts. Turn the key No dash alarms or gauges are firing up, completely dead.

I am going to check the 3 auto breakers back in engine compartment they are old and looking weak. ( George Morris first step recommendation ), I have checked the fuses in the gray box in the engine compartment and wiggeled all the relays, you know all the first steps.

Also tried to start from the rear ignition still nothing.

She fired up last week so this is new glitch.

I had this happen once before two yeaqrs ago while fueling after a little messing around a wiggeling switchs got her to fire up. Not so lucky this time.

Any ideas on trouble shooting and tips are welcomed.
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Kurt Horvath
95 PT 42
10AC
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  #2  
Old 01-02-2012
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Good Morning Kurt and Happy New Year.

I'll ask the obvious, dash A/T security switch is on, Master Electronics switch is on, Battery Isolation Switch is set to both? Check for voltage on the load side of the Battery Isolation Switch. Beyond these checks, it's time to get the schematics out.
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1998 LXi
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Old 01-02-2012
davidmbrady
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Kurt,

Last time a saw a problem like that on an LXi it was a faulty ignition switch. Pull the switch and see if there's voltage going to it. If so, then turn the key and see if it switches voltage to the ACC and IGN terminals.

Of course, there's always the possibility of a faulty ground, engine to chassis.
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Old 01-02-2012
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It is usually something simple.

Hank Hannigan
90SP36
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Old 01-02-2012
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Quote:
Originally Posted by Hank Hannigan View Post
It is usually something simple.

Hank Hannigan
90SP36
Yep start simple. batteries, terminals, grounds, front rear / switch.
Is there any 12 volt activity, headlights etc.
what do the 12v gages read ??
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Old 01-02-2012
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"It is usually something simple." Ain't that the truth!

"I'll ask the obvious, dash A/T security switch is on,YES Master Electronics switch is on, YES Battery Isolation Switch is set to both? Don't have one, but I should put one in. Check for voltage on the load side of the Battery Isolation Switch. N/A Beyond these checks, it's time to get the schematics out Been looking at them since I posted.

"Last time a saw a problem like that on an LXi it was a faulty ignition switch." That was first my first thought, checking into it now.

Keep it coming, bad ground is always something to check on.

"Is there any 12 volt activity,YES headlights WORKING , EL lights and gauge lights, radio, back up camera, all working etc.
what do the 12v gages read 13.4 +or- Xantex RC7 control indicates 100% charge on Batts. "
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Old 01-02-2012
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David,

If the dash ignition switch is bad, would'nt she start from the engine comp. switch?
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Old 01-02-2012
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Could be the "Front - off- rear" switch in the rear. If it is not working you would not be able to start from either the front or back. Try cycling it a few times in case it is just a weak contact in the switch. If still "no joy" then test continuity on the switch, or replace on spec. I just replaced mine, as I had a situation that made me suspect it.
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96wb42
Mid Door
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  #9  
Old 01-02-2012
davidmbrady
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Quote:
Originally Posted by Bumpersbird View Post
David,

If the dash ignition switch is bad, would'nt she start from the engine comp. switch?
Kurt, I'd have to look at your coach's schematics to answer for certain, but on the LXi the engine compartment switches won't start the engine if the captain's ignition switch isn't supplying power. The captain's ignition switch provides voltage to the engine compartment switches. It's highly probable that yours is the same; think anti-theft.
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  #10  
Old 01-02-2012
davidmbrady
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Kurt,

I attached the ignition switch schematic for my coach. You can see three switches, the Ignition Starter Switch on the lower left; SWITCH-31 which is the toggle switch in the engine compartment that Peter's talking about; and SWITCH-3 which is the push button switch in the engine comp. You can see that if either switch-31 or the Ignition Starter Switch is faulty you won't be able to start the engine from any location, as Peter describes.
Attached Files
File Type: pdf IgnSwitchInterlock.pdf (46.0 KB, 187 views)
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