I noticed some oil residue near my oil control valve solenoids. I'm going to guess the o-rings are probably not doing their jobs anymore. I have about 130,000 miles on my 2012 Scion iQ.
Part number is 90099-14137 and you will need a pair of them. MSRP is about $5 each. These should be rather easy to replace.
Seems that part number has been superseded by 90068-14030. About the same MSRP.
Finally got a chance to replace the o-rings. To remove the connectors from the solenoids, you need to press down on the tab fairly hard. As this connector ages and gits brittle, it will probably snap off. You might be better off lifting the tab from the solenoid side of the connector by using a small flat bladed screwdriver. The light grey connector is to the front of the vehicle and the black connector is to the firewall. A single 10mm bolt secures each solenoid to the valve cover. The solenoid will easily slide out of the valve cover.
I had to slide the new o-ring across the slotted ports of the solenoid. I think it might be better to wrap the solenoid body with a few layers of plastic wrap to minimize the potential of the semi-sharp edges of the ports from nicking the o-ring as it sliding it into place. A dab of motor oil helps guide the o-ring into place.
Time to perform this replacement fer both solenoids is just under 10 minutes.
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