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if replacing rpm sensor, anything else i should do while i'm there? n.m.i. 200 1990



Nothing else in there (unless you want to install an IPD rear cam seal holder-inner).... though, honestly, you're not really "in" anything. If you have long skinny arms, this is a *really* simple job. Get a high quality ratcheting box wrench like GearWrench (10mm)... or a set: these things have a billion uses where access is tricky, from OD solenoids to motor mounts to throttle bodies. Reason I say "high quality" for the crank sensor isn't for strength, but rather the fineness of the ratcheting increment. Not much room to swing back there.

Get at it from the passenger side, wrench in left hand with forearm parallel to the firewall. Head next to hood, nose on the rear of cylinder head, close right eye. Should be easy to see. Remove bolt (put it somewhere safe before removing sensor so you don't drop it into the bellhousing!), remove sensor.

Every one of the original sensors on 240/740/940's is doomed to failure, and sooner rather than later. It's a cinch to do on a 740/940, and not much harder to do on a 240, but too many people put this (what I feel is) *imperative* job off on their 240's because it's supposed to be "next to impossible" to access. Then the sensor fails, and you're stuck.

-Ryan
--

Athens, Ohio
1987 245 DL 314k, Dog-mobile
1990 245 DL 134k M47, E-codes, GT Sway Bars
1991 745 GL 295k, Regina, 23/21mm Turbo Sway Bars
Buckeye Volvo Club






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