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Old March 31st, 2004, 09:21 PM
ttegt's Avatar
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Thomas Tegtmeier
1995 Defender 90
Join Date: Feb 2004
Location: South Salem, NY. USA
Posts: 38
Unhappy dirty stepper???

My '95 D-90 is trying to tell me something, I'm getting a code 48, which I believe tells me to look at the stepper motor, a solinoide??? maybe needs cleaning??? I think I found it, left side lower plenum chamber??? I removed this, how do you clean it??? I just put it back, reset check engine light, a few days later I'm getting a code 48... Am I on the right track? did I find the stepper motor? is it cleanable? do I just replace it?

The truck runs great, but that check engine light is on....

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Old March 31st, 2004, 10:37 PM
neo812's Avatar
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1995 NAS Defender 90 SW TDi
Join Date: Sep 2003
Location: Camano Island WA
Posts: 126
Yes that is the Stepper Motor. WD-40 works well to clean them. It should have some movement of the shaft that extends into the plenum. Not sure if it will trigger the engine light. But I have seen erratic running and surging due to the thing being stuck. Maybe someone here can enlighten us both about the light. I personally wouldn't worry about it. My first Rover wouldn't even make it home from the dealer without it coming back on. A half dozen Rovers later and you quit worrying about the minor idiosyncrasies of the Rover
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