lude~dude

I just bought a 90s prelude auto b21a1 and the k4 trany but the speed sonsor is dead so it doesn't shift out of 3rd gear and the rpms or speedo won't move so I got online and found a speed sensor for a manual says its for the 2.0 L4 will it work with mine

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Colfax

It will work as long as it's from a 90 or 91. Auto or manual are the same from what i've read. But I can't confirm that because I haven't tried swapping them myself.

And btw, if you have a b21a1 your 3rd gen is an Si not an S. The S models have a b20a3 and dual carbs, not fuel injection.

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89 Prelude 2.0Si 4WS
91 Prelude Si - SOLD

lude~dude

word thanks man, I read that it would work as well. I just wanted a second opinion.