One more IAC Valve question
02-18-2009, 03:20 AM
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One more IAC Valve question
Ok so this is just a real quick simple question. The IAC valve as two plugs for hoses one is a coolent line... that much I know but... whats the other plug for... thanks for any help
On a honda B-series
On a honda B-series
Last edited by 8====D; 02-18-2009 at 04:45 AM. Reason: im dumb
02-18-2009, 05:08 AM
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Re: One more IAC Valve question
Well thanks... but now.. im I have a small problem.. I know where the coolent line that goes in is... but does the other hose go to the intake manifold...
I see your not a honda guy but thanks for trying to help me out...
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I see your not a honda guy but thanks for trying to help me out...
+rep for you
02-18-2009, 05:51 AM
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Re: One more IAC Valve question
It looks from these that the flange farthest from the electrical harness is going into the throttle body, however it is much harder to tell where the other one leads, somewhere either in the block, or on some connection right up on the block
looks almost as if that radiator hose has a tap-out that goes to the IAC.My friend has a b18, if I get the chance to see his car today I shall look.
Last edited by The_Truth; 02-18-2009 at 06:09 AM.
02-18-2009, 06:07 AM
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Re: One more IAC Valve question
huh... ill fig it out... for now ill just block them off and cold start it... but hopefully someone who knows hondas well will help out
02-18-2009, 07:00 AM
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Re: One more IAC Valve question
one hose comes from the main block coolant pipe to the iac valve, the outgoing hose goes to the fast idle thermovalve. you can get rid of the fast idle valve if youd like, youll just have a constant idle and you just need to loop it back so you dont have a coolant leak. the fit valve will increase rpm at idle until the car has reached operating temp than drop it back down to normal idle. you see that little brown plate with the two screws. your fit valve is in there. its a little wax rod that will let air by. you should probably tighten that up if you are going to by pass it just so you dont have to mess with it later. Alot of the times when people have crazy idles, its not cause of the iac valve, its cause the fit valve has backed out. It can be retightened and everything is back to good.
02-18-2009, 07:57 AM
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Re: One more IAC Valve question
one hose comes from the main block coolant pipe to the iac valve, the outgoing hose goes to the fast idle thermovalve. you can get rid of the fast idle valve if youd like, youll just have a constant idle and you just need to loop it back so you dont have a coolant leak. the fit valve will increase rpm at idle until the car has reached operating temp than drop it back down to normal idle. you see that little brown plate with the two screws. your fit valve is in there. its a little wax rod that will let air by. you should probably tighten that up if you are going to by pass it just so you dont have to mess with it later. Alot of the times when people have crazy idles, its not cause of the iac valve, its cause the fit valve has backed out. It can be retightened and everything is back to good.