I have a 1995 Georgie Boy MH on a P32 chassis with 454 eng with TBI. MH only has 37,000 miles and spent the last several months doing extensive maintenance; coil springs, airbags, ball joints, fuel filter, changed/flushed ALL fluids, check spark plugs, etc, etc. Recently took it on maiden voyage that was 360 mile round trip. On the way out and on the way back, the MH all of a sudden died, usually on the highway driving at 60mph. I would shift into neutral and it would fire right back up. This happened about 8 times total; 5 times on the highway, 2 times on surface streets (maybe 35mph) and the last time at almost a dead standstill pulling into the driveway. Everytime it died, it happened instantly with no hesitation or intermittent cutout. Environmental conditions were benign with 75-80 degree temps, no rain, water, etc. There did not seem to be any coorelation to it dying; rough roads,hard braking, hard acceleration, it just inexplicably dies. I am at a loss in terms of how to troubleshoot such an intermittent problem. I suspect it is ignition related, ECM, coil, etc, something having to do with spark plugs not firing? Any suggestions on how to move forward. There appears to be connector on driver side for the computer, but it is an older style connect that is not compatible with device I have. Does anyone know if I just need to get an adapter, or do the older computers required completely different device?Thanks,

You have done a lot of maintenance so I would look for something that could have loosened a plug, or frayed a wire, that shuts off power to the ignition. You don't say if the dash goes blank which would indicate a loss of power to the main control panel or if just the engine quits which could be a loss of power to just the ignition/ECM circuits. Go back over any work that was done around the engine compartment and 12 volt circuits that keep the engine running.

Some autoparts stores have the OBDs and will let you use it to diagnose a problem in hopes they can sell you parts.Hopefully someone can shed some light on the cause. Maybe this forum can help:http://www.dieselplace.com/forum/6-other-vehicles/9-gm-gassers/

that connecter is old obd1 12 pin connecter you could go on ebay and buy a used scanner for this mh very cheap all obd1 gm scanners will work I like snap on scanners it would be worth its weight in gold with what it can do for you some times computer can go bad start mh up and tap on computer see if it cuts out

You can read codes by jumpering two pins on the connector and then read the flashing engine light. This is very early OBD II and late OBD I. I haven't found any one that has the OBD I.5 reader.The older ones will not show all the codes like the OBD II does. Even some of the codes are not correct.Terminals "A" and "B" need to be jumpered using a short piece of wire or paper clip.Pin a is on flat side of connector toward the bottom and B pin is just above it.Insert jumper, then turn on ignition switch. First code is 12 and will flash three times, then any code will flash three times each.Could be something like the Crankshaft position sensor, camshaft sensorI would be more looking in the distributor. Possibly the coil pickup or the ignition module. Look for loose connector.PM me if you want me to scan page out of my book. We are leaving tomorrow for roadtrip.

AS has been stated in other threads. 454 engines are notorious for collapsing vacuum advance tubing. Please replace the tubing and retry

P32 MH Engine Dying Abruptly | Good Sam Community

enblethen
Nomad
Jul 15, 2014
You can read codes by jumpering two pins on the connector and then read the flashing engine light. This is very early OBD II and late OBD I. I haven't found any one that has the OBD I.5 reader.
The older ones will not show all the codes like the OBD II does. Even some of the codes are not correct.
Terminals "A" and "B" need to be jumpered using a short piece of wire or paper clip.
Pin a is on flat side of connector toward the bottom and B pin is just above it.
Insert jumper, then turn on ignition switch. First code is 12 and will flash three times, then any code will flash three times each.
Could be something like the Crankshaft position sensor, camshaft sensor
I would be more looking in the distributor. Possibly the coil pickup or the ignition module. Look for loose connector.
PM me if you want me to scan page out of my book. We are leaving tomorrow for roadtrip.
allbrandauto
Explorer
Jul 15, 2014
that connecter is old obd1 12 pin connecter you could go on ebay and buy a used scanner for this mh very cheap all obd1 gm scanners will work I like snap on scanners it would be worth its weight in gold with what it can do for you some times computer can go bad start mh up and tap on computer see if it cuts out
the_bear_II
Explorer
Jul 15, 2014
Some autoparts stores have the OBDs and will let you use it to diagnose a problem in hopes they can sell you parts.

Hopefully someone can shed some light on the cause.

Maybe this forum can help:
http://www.dieselplace.com/forum/6-other-vehicles/9-gm-gassers/
rgatijnet1
Explorer III
Jul 15, 2014
You have done a lot of maintenance so I would look for something that could have loosened a plug, or frayed a wire, that shuts off power to the ignition. You don't say if the dash goes blank which would indicate a loss of power to the main control panel or if just the engine quits which could be a loss of power to just the ignition/ECM circuits.
Go back over any work that was done around the engine compartment and 12 volt circuits that keep the engine running.

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P32 MH Engine Dying Abruptly

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