Join Date: Mar 2006
Location: Missoula Montana
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Quite possible the surge fried your speed sensor. As long as everything elce works fine that is where I would start and as long a everything elce is ok your PCM is probably OK. The speed sensor is located on the drivers side near the rear of the tranny. It has an electrical plug in connector on it.
As far as the speedo bounce that could be caused by the speedo drive gear. That gear is held in place and tight by two spacers, one on either side of it, inside the tranny. You will need to drop the drive line and tighten the nut that holds the rear tranny yoke in place. This nut needs to be TIGHT, it is the only thing that keeps the speedo drive gear from moving. I have seen cases where less than a 1/4 of a inch makes the difference.
I just remembered - the PCM is located on the inside of the drivers side front fender - behind the battery. It might be a good idea to make sure that the wiring harnes that plugs into it is OK.
1993 4X2 14cm WG, PDRHX35, ATS P&P Exh,DD3+ injectors, "Green HP" A/F, 15% ++ pump, with Denny T StageII fuel Pin, Horton Fan, NV4500HD ,BD Exh Brake, 4" Rip Rook exh, 3200GSK, Snow W/M stage 3, 394 RWHP 880+ torque. 441/889 on W/M.
Last edited by Bob Beauchaine; 12-13-2006 at 06:04 PM.