AlfromNH
Samba Member
Joined: August 04, 2024
Posts: 221
Location: NH
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 Posted: Tue Nov 04, 2025 4:39 am Post subject: Idle control module versions |
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I just picked up a spare idle control module and I notice it’s a different version than the one installed in my ‘88. Is there any functional difference?
I installed it and found my van suddenly idled between 2000-2500 rpm, so not sure if it’s a faulty unit or what.
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‘88 2wd Auto Westy project |
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do.dah
Samba Member
Joined: August 27, 2015
Posts: 855
Location: Washington
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| Posted: Tue Nov 04, 2025 8:34 am Post subject: Re: Idle control module versions |
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I'll take a stab at this until somebody that actually knows, comes along and corrects me.
What you have showing as original, is a 'D' version. As far as I know, for an '88', that would not be what was installed at the factory.
The 'D' version is supposed to have a slightly improved mapping, along with perhaps a less likely possibility of internal failure(s), possibly due to it being a slightly newer ICU...
The 'B' version is what would've been original in an '88'. I went thru a few of those before I got a 'D' version.
Personally, I'd trust the 'D' version. Not to say that 'D''s can't fail.
They both should work equally fine in your van. |
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