I replaced the cam sensor on my Riv. The trick is you kind of have to do it blind. On my car the sensor is behind the water pump pulley - which kinda explains why they made the pulley so easy to remove/replace. Basically with the belts on use a box end wrench I think 8mm to loosen but not remove the pulley bolts. THEN take off the belt. THEN remove the pulley bolts the rest of the way. Now wipe off the area around the sensor with a paper towel (or 2) or a clean shop rag. Next you need I think a 10 or 11mm socket on a short extension (I used a wobble extension and a 3" extension) with a ratchet wrench.
Leaving the wire for the cam sensor connected, back out the attaching bolt. The sensor has an O-ring holding it in place. When the bolt is out you have to grab and wiggle the sensor to get it out. Once the sensor is out - well - there is enough wire so you can leave it plugged in and move the sensor far away enough from the engine block to see the sensor and the plug.
Now unplug the sensor and inspect the wiring. Any loose/busted wires? Watch out for wires that are broken by the connector pins such that the insulation is still in 1 piece but the wire is broken off inside the insulation.
Plug the new sensor into the wires where the old one was. put it back in under the water pump pulley. Now here is the trick. The wires will kind of have set their shape such that they will help you guide the sensor into the hole in the block it fits into and will more or less help you align the attaching bolt. If you crane your neck left and look right you can barely see the holes. Anyway, line the attaching bolt up and install it. You may want to use a little Loctite Blue (blue is removable, red is permanent) on that attaching bolt, or other removable thread locker, if you have some around.
Now clean off the water pump pulley with a little dry gas or window cleaner and a clean towel.
Now put the pulley back on and get the bolts finger tight... you may want to use Loctite Blue on these, too. Then snug them with the wrench while holding the pulley with your hand.
Then put the belt back on.
Now that the belt is back on, tighten the water pump pulley bolts the rest of the way. If you got them right before, they will only tighten another 1/4 to 1/2 turn or so. Be sure not to strip them.
Now start the car and watch the water pump pulley. It should turn smooth not wobble. If it wobbles you need to loosen the WP pulley bolts and reposition it so it turns smooth.
Albertj
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1998 with all fac. opts. (exc. CD changer and subwoofer); 209,000 miles. Mods: KYB front struts, extra noise barriers, fire extinguisher, Magnecor 8mm plug wires, 4-note horn, custom-made stainless exhaust.
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