| Re: [GMCnet] Re: How to test distributor modules [message #368176 is a reply to message #368175] |
Thu, 23 December 2021 12:03   |
rjw
Messages: 697
Registered: September 2005
Karma:
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Senior Member |
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James Hupy wrote on Thu, 23 December 2021 10:07Yes, care is needed when tightening any fastener in plastic. Plastics vary
widely in strength, but unless they are reinforced with carbon fibre or
other similar products, they are nowhere close to the strength of the
fastener itself. Dick Paterson is my go-to guy when it comes to "tricks"
that can be used to insure that those fasteners don't loosen up due to
heat/cool cycling and/or engine vibrations. He blames loose fasteners as
the #1 cause of module failure. I tend to agree with him.
Jim Hupy
Salem, Oregon
I had a module fail on my way to the Fall 2006 GMCMI convention held in Berrien Springs, Michigan. "The motorhome" stopped running Westbound on I94 within coasting distance of a closed rest area. I was able to coast in and parked well away from the traffic. While in that safe place I figured it might be a module so I replaced it, as well as a distributor cap and rotor that I had as spares. It started right up and away I went.
While at the rally I tested the module I replaced with a module tester that Paul Bartz carried in his coach. Yes it tested bad. Upon examination of the rotor I noticed a burned area and a tiny hole. Also, the cap was missing one spark plug terminal which I found in the distributor. The missing spark plug terminal explained why for thousands of miles why I couldn't get a smooth idle. Every time that spark plug was supposed to fire, instead of going to the spark plug it jumped from the terminal to the rotor eventuality burning a hole which then killed the module. The distributor cap was from Spring Field Ignition and Dick Patterson was at the rally. I showed it to him and he promptly gave me a new one he had for sale.
I now carry a module tester with me in "the Motorhome" and several brand name modules.
Richard
76 Palm Beach
SE Michigan
www.PalmBeachGMC.com
Roller Cam 455, TBI+EBL, 3.42 FD, 4 Bag, Macerator, Lenzi (brakes, vacuum system, front end stuff), Manny Tranny, vacuum step, Tankless + OEM water heaters.
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