I know yall are probably tired of new guys asking old questions but I did search this and other forums for a couple days now and its all starting to run together. I'm very new to Honda but have been doing all type of reading on the stickies here. I just got a 92 hatch D15B7 that was parked for 10 years. Its running now but had a sticky throttle blade and gummed up IACV and FITV so I took it all apart. The throttle body itself is clean and good now but the two valves are questionable. I saw the stickies about cleaning them and would like to go that way but cant find any new gaskets to put them back on. I'm wondering what my options are. I saw they make block off plates for the FITV which sounds good but would that turn my check engine light on without the FITV being plugged in? Also, would that give me constant high idle that I would need to adjust down? I'm in Minneapolis, I wouldnt need to drive it this coming winter but maybe in the future so a working FITV could help. My main goal would be to put it all back together with all cleaned parts and new gaskets. Does anybody know if the orings are common sizes that would be found in an oring set? I also saw there were many throttle bodies on various sites for sale but none close to the 56mm stock one, has anybody been able to find a new one close to the stock size? I've looked up various cars in the part sites with none listing a new throttle body. I see some 68mm TBs but thats the smallest I can find new.

 

Gaskets need to be ordered from Honda. Custom sizes and shapes.

FITV isn't electrical so no CEL if removed and blocked off. It will lower your cold idle. FITV is to bump idle up to 1200 rpm or so when cold.

The IACV on the other hand is electrical and it controls idle in most all situations but on the OBD1 I believe predominantly when the engine is warm. I personally have not had luck on cleaning them, I've just had to keep swapping cleaned ones until I found one that worked and the idle didn't surge.

If you've cleaned the throttle body and the throttle plate no longer sticks, you shouldn't need to buy a new one. The only other part you may need to look at is the TPS on the throttle body.

 

Thank you. I would not have thought the dealer would still have these but they did. $36 and they will be here tomorrow. Thanks again. I'll start a build thread when we start it. My goal is to build a little track car mainly for small second gear tracks that are setup around the city. I've been to some little parking lot events and they do really well on these tracks.