MaxPower13

ok, so its been like 80s and 90s the last 2 weeks. Im mostly a window kind of guy but I put my air condition, I have the auto climate control by the way, and Im getting a weird sound from under the hood. Its like my engine is working harder. I dont think this is normal bc its only if I put the AC on and if its off, the cars fine. I dont get the kick from the engine unless I floor it. Its like its idling higher, any ideas? The AC is blowing cold air so I know it works.

Drew

eric93SE

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The engine has a solenoid (idle up air control) that raises the idle when the ac is on. there are carbon deposits that form inside the Idle air control valve. I cleaned mine and saw a difference. The procedure I used was a little complecated.

superdesi

I would be very interested to know exactly how you accomplished this.

I want to clean the IAC valve as well as my throttle body

eric93SE

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eric93SE

iTrader: (1)

I have the DOHC, and I notice superdesi that you have the SHOC. So the hose will be in a different location. So you need to find the air hose that feeds the IACV. The problem that arrises is that the engine wont idle if air isnt running through the MAFS. So what I did was removed the hose from the air intake that feeds the IACV. then I took my leaf blower (I know it sounds crazy, aint no leaves in that damn engine) and a rubber hose that would fit into the hole in the air intake (where the hose to the IACV was disconnected). let the leaf blower idle and duct taped one end of the hose to the leaf blower (taped it so that all the air from the blower only flowed through the hose). then the other end of the hose was taped to the hole in the air intake. So that now air would be flowing backwards through the air intake and accross the MAFS. Now that the rubber hose is accesable while the engine is idling you can spray the carberator cleaner into the IACV hose, following the instructions on the can. (make sure you use cleaner that is meant for EFI)

This can also be accomplished without the leaf blower. What you would do is disconnect the hose to the IACV, spray in a bunch of the cleaner, reconnect the hose, then run the engine. then turn off the engine and repeat the process (many times ~10).

When I was finished the idle rose about 200rpm. I had increased the idle in the past, so now the base idle was higher than the reccomended base idle I went ahead and adjusted it.

I hope this helps, and its not at all as complicated as it sounds.