EGRs didnt exist on all Hondas till about gen 3 IIRC. It was a California emissions thing prior to that because California standards were stricter than Federal (still are but both Federal and California have become stricter over the years)
Sorry, for the delay getting back to you. I looked at my CRV yesterday and I my have solved the case. I need to review the the exact location of it's mating plug. I will do that this morning and get back to you.
Ok, I found it. That is the pigtail to the crankshaft position sensor. It routes nearly straight down between the alternator and the back side of the timing belt. If you crawl under the oil pan area and look up between the inside drive belt and the the timing belt cover you will see were it plugs in.
Sorry I did not see the reply's. I thought there would be email notification...
I still do not know what the plug is for. All I can think of is the motor was replaced with an Imported Japanese spec one.
I wonder if the North American engine had something that this engine doesn't?
I do get intermittent check engine light for code P0505 (idle air control system) since the engine replacement. I even replaced the IAC valve with a new one and code still shows up sometimes, not sure if this can be related.
Thanks again for any help!
That plug very simply is just not used. Very common on vehicles to have plugs for parts that are not used or only optional on some models. Wires are still there but what they plug into are not. Dont worry about it.
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