Contour Enthusiasts Group Archives Forums Modifications Duratec Maintenance IMRC Heatsink

Originally posted by rickse99:

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Originally posted by ScottK:

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Originally posted by rickse99:

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Nope , transistor will go out before that will , take out the electric motor and look at the windings . Educate yourself son

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Gee dad, I thought that's what my degree in mechanical engineering had done

Point is - the failure rate of IMRC from heat is a HUGE issue. If you'd bothered to search around you'd see tens to maybe even hundreds of posts about it. Many times near dead IMRC's can be reliably used after removing the heat catcher or relocating them off the valve cover. It's been a proven fix. But if you say it's the transistor in an all knowing tone obviously we're all just dumb! Oh, and I've looked at 2 different motors thanks - the 1st dead one is currently back in use in a friends car located under his battery tray.

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Gee son I thought that's what my degree in mechanical engineering had done.Point is - the failure rate of IMRC from heat is a HUGE issue because people dont know what transistors are .Many times near dead IMRC's can be fixed after replacing the transistor . It's been a proven fix. But if you say it's the relocation in an all knowing tone obviously we're all just dumb!

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But transistors aren't affected by heat

The motor is pulling current in a stalled state when the IMRC is open - ie there is no back-EMF to limit current draw. On top of that it operates in a condition that is hot enough to burn the crap out of human flesh. My vote is still on the motor, but being M.E. I will always look at mechanical failures before electrical. Seening as how a "dead" IMRC can still function normally when cooled - I would think that points in the direction of a motor overheat problem over a burned out transistor that would kill the IMRC permantely, right?