HELP - 8V92 will not start
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06-18-2008, 12:45
Post: #1
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HELP - 8V92 will not start
I need some suggestions.
I have been working on the coach for week but did not start the engine. I changed the themostate and checked the water pump on the generator engine. The generator now runs great. Yesterday I put new exhaust manifold gaskets on the street side of the coach engine. This morning I tried to start the engine to check the exhaust for leaks. The engine starts and runs for about 10 seconds and quits. High idle switch does not change result. Accelerator pedal has no effect. Check engine light does not stay on and the codes are the same as were there when I got the coach last year. My concern is that last week I tried to install a VMSpc JIB on the wrong plug and then after help from Rob, installed the JIB on right plug. It turned out the JIB was faulty. I am waiting for a replacement JIB. The concern is that that messing with the plugs has screwed up my ECM and that is causing the non-starting problem. The engine was running great about three weeks ago before I did all the above work. It could be plugged fuel filters. I am planning on changing filters tomorrow. It seems unlikely that it is plugged filter. My vaccuum gage does not move above low range when it is trying to run. Oil pressure moves to 40 lbs. Coolant level is full. I am real trouble because my wife was planning on leaving tomorrow on a two week trip. Any suggestions? How could I determine if I messed up the ECM? Larry Kehler 1994 PT-40WBDA St Louis |
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06-18-2008, 13:36
Post: #2
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HELP - 8V92 will not start
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06-18-2008, 13:46
Post: #3
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HELP - 8V92 will not start
Does the e3ngine die as soon as you relase the key to the run
position? Mike Mcmahan96 42' Wanderlodge- -- In WanderlodgeForum@yahoogroups.com, Leroy Eckert wrote: > > This may be way out. > Disconnect the main ground wire for the battery bank which should remove all power from the coach. Leave it disconnected for about 5 minutes. Reconnect and try to start. I guess a wire in the wrong place on the DDL could cause problems but I wonder about that. > If that does not work check the main harness connection to the ECM for corrosion. And check the main battery ground that is attached to the coach frame on the curb side near the rear bumper(at least that is where mine is) Hope this helps. I doubt it is a filter. > > Leroy Eckert > 1990 WB-40 Royale > Dahlonega, GA > Smoke N Mirrors > > > --- On Wed, 6/18/08, Larry Kehler > From: Larry Kehler > Subject: [WanderlodgeForum] HELP - 8V92 will not start > To: WanderlodgeForum@yahoogroups.com > Date: Wednesday, June 18, 2008, 8:45 PM > > > > > > > > > > > > I need some suggestions. > > I have been working on the coach for week but did not start the engine. > > I changed the themostate and checked the water pump on the generator > > engine. > > The generator now runs great. > > Yesterday I put new exhaust manifold gaskets on the street side of the > > coach engine. > > This morning I tried to start the engine to check the exhaust for leaks. > > The engine starts and runs for about 10 seconds and quits. High idle > > switch does not change result. Accelerator pedal has no effect. > > Check engine light does not stay on and the codes are the same as were > > there when I got the coach last year. > > > > My concern is that last week I tried to install a VMSpc JIB on the > > wrong plug and then after help from Rob, installed the JIB on right > > plug. It turned out the JIB was faulty. I am waiting for a > > replacement JIB. The concern is that that messing with the plugs has > > screwed up my ECM and that is causing the non-starting problem. > > > > The engine was running great about three weeks ago before I did all > > the above work. It could be plugged fuel filters. I am planning on > > changing filters tomorrow. It seems unlikely that it is plugged > > filter. My vaccuum gage does not move above low range when it is > > trying to run. Oil pressure moves to 40 lbs. Coolant level is full. > > > > I am real trouble because my wife was planning on leaving tomorrow on > > a two week trip. > > Any suggestions? > > How could I determine if I messed up the ECM? > > > > Larry Kehler > > 1994 PT-40WBDA > > St Louis > |
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06-18-2008, 15:02
Post: #4
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HELP - 8V92 will not start
Mike & Leroy
I disconnected all ground and power wires and cleaned the connections. No effect. The engine runs for 10 -15 -20 seconds after the key is released. But runs about 500 RPM then dies. Accelerator had no effect during the short run time. Larry Kehler 1994 PT-40 --- In WanderlodgeForum@yahoogroups.com, "Mike McMahan" <mmcmahan@...> wrote: > > Does the e3ngine die as soon as you relase the key to the run > position? Mike Mcmahan96 42' Wanderlodge- > > -- In WanderlodgeForum@yahoogroups.com, Leroy Eckert > wrote: > > > > This may be way out. > > Disconnect the main ground wire for the battery bank which should > remove all power from the coach. Leave it disconnected for about 5 > minutes. Reconnect and try to start. I guess a wire in the wrong > place on the DDL could cause problems but I wonder about that. > > If that does not work check the main harness connection to the ECM > for corrosion. And check the main battery ground that is attached to > the coach frame on the curb side near the rear bumper(at least that > is where mine is) Hope this helps. I doubt it is a filter. > > > > Leroy Eckert > > 1990 WB-40 Royale > > Dahlonega, GA > > Smoke N Mirrors > > |
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06-18-2008, 15:43
Post: #5
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HELP - 8V92 will not start
Could it be a low coolant sensor causing shutdown?
No accelerator indicates no air pressure, is the air pressure building?
Troy
86 Newell
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06-18-2008, 15:46
Post: #6
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HELP - 8V92 will not start
Sounds like an air in the fuel line problem, prime going away. Once a diesel starts it should run until there is no fuel/air feeding the engine.
On Wed, Jun 18, 2008 at 8:43 PM, Troy Tikalsky <"ttikalsky@embarqmail.com"> wrote:
-- Curt Sprenger 1987 PT38 8V92 "MacAttack Racing" Anaheim Hills, CA |
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06-18-2008, 15:57
Post: #7
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HELP - 8V92 will not start
Larry, I've said this before but it bears repeating. The folks that
taught me the little that I know about engine told me to always look for the simple stuff first when I had a problem. Have you tried to start the c0ach from the rear start switch? My guess is that in replacing the exhaust gasket that a wire or a connection is pulled loose. When you had the vspec hooked up wrong did you turn the key on or try to start the engine? If not then I doubt that is the problem. I wish I could be more help but i am not familar with the 94 engine compartment. Mike McMahan 96 42' Wanderlodge --- In WanderlodgeForum@yahoogroups.com, "Larry Kehler" > > Mike & Leroy > I disconnected all ground and power wires and cleaned the connections. > No effect. > The engine runs for 10 -15 -20 seconds after the key is released. > But runs about 500 RPM then dies. Accelerator had no effect during > the short run time. > > Larry Kehler > 1994 PT-40 > > > --- In WanderlodgeForum@yahoogroups.com, "Mike McMahan" <mmcmahan@> > wrote: > > > > Does the e3ngine die as soon as you relase the key to the run > > position? Mike Mcmahan96 42' Wanderlodge- > > > > -- In WanderlodgeForum@yahoogroups.com, Leroy Eckert > > wrote: > > > > > > This may be way out. > > > Disconnect the main ground wire for the battery bank which should > > remove all power from the coach. Leave it disconnected for about 5 > > minutes. Reconnect and try to start. I guess a wire in the wrong > > place on the DDL could cause problems but I wonder about that. > > > If that does not work check the main harness connection to the ECM > > for corrosion. And check the main battery ground that is attached to > > the coach frame on the curb side near the rear bumper(at least that > > is where mine is) Hope this helps. I doubt it is a filter. > > > > > > Leroy Eckert > > > 1990 WB-40 Royale > > > Dahlonega, GA > > > Smoke N Mirrors > > > > |
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06-18-2008, 15:58
Post: #8
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HELP - 8V92 will not start
You have air in the fuel lines. Check the fuel level in each of your
filters. Make sure they are full, then try to start. You may have to add fuel to the filters several times to get it to run. You have probably added more air trying to start. Once running, you need to find the sourse of air leaking into a fuel line or filter. Check the Racor for bubbles while running. If they are present, it could be a loose or faulty drain fitting. If no bubbles, then the source of the leak is somewhere else. Racor leak is common. R.E. (Ron) Marabito, Dallas, TX 92WB40 Currently in Streetsboro, Ohio --- In WanderlodgeForum@yahoogroups.com, "Larry Kehler" wrote: > > I need some suggestions. > I have been working on the coach for week but did not start the engine. > I changed the themostate and checked the water pump on the generator > engine. > The generator now runs great. > Yesterday I put new exhaust manifold gaskets on the street side of the > coach engine. > This morning I tried to start the engine to check the exhaust for leaks. > The engine starts and runs for about 10 seconds and quits. High idle > switch does not change result. Accelerator pedal has no effect. > Check engine light does not stay on and the codes are the same as were > there when I got the coach last year. > > My concern is that last week I tried to install a VMSpc JIB on the > wrong plug and then after help from Rob, installed the JIB on right > plug. It turned out the JIB was faulty. I am waiting for a > replacement JIB. The concern is that that messing with the plugs has > screwed up my ECM and that is causing the non-starting problem. > > The engine was running great about three weeks ago before I did all > the above work. It could be plugged fuel filters. I am planning on > changing filters tomorrow. It seems unlikely that it is plugged > filter. My vaccuum gage does not move above low range when it is > trying to run. Oil pressure moves to 40 lbs. Coolant level is full. > > I am real trouble because my wife was planning on leaving tomorrow on > a two week trip. > Any suggestions? > How could I determine if I messed up the ECM? > > Larry Kehler > 1994 PT-40WBDA > St Louis > |
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06-18-2008, 16:01
Post: #9
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HELP - 8V92 will not start
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06-19-2008, 00:31
Post: #10
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HELP - 8V92 will not start
no new codes make it sound like it is not a DDac shutdown. I would go
with fuel (as do Curt and Ron). Either air in fuel or the air operated FuelShutOff has issue. I would use an aux air compressor or shop air compressor to pump up the tanks, exersize the key 'on and off' then try a start.( I dont know if this would even have any effect) The other thing is some relay or gadget in the engine compartment that RandyDupree once spoke of????? Could be a ground to the electric over air operated fuelshut off switch???? Or wire in that appliance. GregoryO'Connor 94ptRomolandCa |
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