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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 04-26-2008
Jim Barone Jim Barone is offline
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Default Check Engine Light 8V92

We are on are way from Arizona to Maryland and are visiting in Kentucky. Upon arrival in Nashville the check engine light came on for a few moments and then went out. I checked my gauges and all temps and pressures were in spec. Leaving Nashville the check engine light came on again and went on and off for 20 minutes. Again all temps and pressures were in spec. The light then went out and stayed out for the last 100 miles. Any suggestions as to what I'm looking at here. When I start the engine it goes through the test sequence and goes off as it should. What should I be looking for? Thanks in advance Jim Barone currently in Western Kentucky
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Old 04-26-2008
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RAGster RAGster is offline
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Jim,

Have you checked your coolant level?
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Old 04-26-2008
Jim Barone Jim Barone is offline
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Yes, coolant level was good as well as engine temp. I wonder if anyone else has experienced an intermittant action of the check engine light. Thanks for the response. Jim Barone
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Old 04-26-2008
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Randy Dupree Randy Dupree is offline
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the engine was still running?
no other symptoms? just the light?
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Old 04-27-2008
fxdwg fxdwg is offline
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Since I'm new to the BB scene, all I can give you is my 3 years as a professional car mechanic. It's an intermittant fault that the computer is picking up. You should be able to see the code witha reader or diagnostic computer. Tracking down exactly what it is will be a little more difficult, as you'll really need to have the fault occurring while you're testing exactly what is wrong to see that whatever it is is bad. You should find a sensor out of whack, if I had to guess. Sometimes it's an intermittant wiring problem that you can trace by flexing the harness while testing. I did all of this kind of work in the shop I was in.
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Old 04-27-2008
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Randy Dupree Randy Dupree is offline
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engine grounds are the first thing to check,clean the connections!
Randy
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  #7  
Old 04-27-2008
Jim Barone Jim Barone is offline
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Default check engine light 8V92

Randy..This is a 1991 WBWL..Give me a clue as where to begin to look for the engine grounds..Since you mentioned it, I think I might have seen the light come on or off as I hit a bump. Thanks Jim Barone
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Old 04-27-2008
guysmalley guysmalley is offline
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Hi I had the same problem on my 86 pt 40 v892 turbo the engine light came on for short periods then longer all gauges were fin, turned out the very small coolant hose on the starboard engine block a real bear to get to, it wouldn't leak all the time and the leak was small til it split. put a sheet of card board under the bus to see what is leaking if anything. it may well be a faulty sensor flauty, good luck

guy smalley
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  #9  
Old 05-04-2008
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I would just add an extra engine ground cable,run it from the engine to the ground buss bar near the batterys.
the main ground wire is bolted to the side of the transmission,its on the passenger side,up high and bolted to the bracket that holds the external tranny filter,its a real bear to get to,even with a pit.
something that you might do is pull the wires off all the sensors and clean them with an electrical cleaner,then use di-electric grease on them before re-attaching.
let us know what happens!
Randy
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