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I have problems after cleaning the Throttle Body on my Civic 2006 EX Coupe (see other posts). Tried to do the relearn several times, but did not work at all. Got code 0507 (famous idle problem after cleaning Throttle Body), and later started getting the P1129 (MAP sensor). Got a nice suggestion (thank you) for checking the O-Ring on the MAP sensor (maybe causing vacuum leak). I previously tried to do the spraying surround the intake (and everywhere else) to see if I could detect some leaks - got nothing. Anyway, I dismounted all over again, went to the O-Ring on the MAP, and decided to change it. Went online, look for the dimenssions, and went to get some; then some non-sense problem started. First I got the mesurament being 9.8 x 1.9mm on sites - bought a case of O-Rings, and as I compare them to the original, all seemed too big and too thin - big mistake, I did not pay enough attention when searching, that size was for older models of Civic. Anyway, back to searching, and found on Honda Parts Online (and another one that I do not remember) that the Part# is 37385-PGK-A01, even the Throttle Body seems the same as mine. I checked vehicle fitment (do not want to make the same mistake), all matched, but by luck, I remember my previous problem. They mention the size as being 0.4 x 0.4 x 0.1 inches. If I convert those to mm, I got 10.16 x 10.16 x 2.54 mm. When I compared the O-Rings the previous time, even the 8.8mm was still too big so, how would 10.16mm fit on the sensor. I am doing what I should have done from start: measuring the O-Ring myself, ID (inside diameter) and CS (cross section - width of rubber), as I saw on measuring O-Rings, and go try it by my on.