ENG: Cleaning out IAC Valve

[1990Ex]

Ok, I did this DIY. But my car still surges. Any clue what else it could be?

go to the one right beside it, with the 2 screws on top. open it up an screw the white part down if it doesnt tighten down then you need to replace it.......





HOW DID EVERYONE GET THE BOTTOM BOLT ??????????????????????

[Isdoyra]

well i'm doing this right now, and stop to check this post, I couldn't belive the deposits there, 17 years of egr port not cleaning, danm, I gues imma take the whole TB down including IM and clean it.
Just a tip, I took the air intake an some other stuff down to make some room to work on it properly and it's much more relaxing when you don't have to strip your hands to get to a bolt LOL

[1990Ex]

i did this today an car runs alot smoother, doesnt shake while sitting at the light anymore

[KRIS05VVTi]

BEFORE:



AFTER:



looks cleaner, car does'nt idle low enymore

[according2Him]

piks will be up when my mom gets home =]

I guess his mom is out on business! Lol

[KRIS05VVTi]

I guess his mom is out on business! Lol

not funny....i needed her car to go buy some more carb cleaner

[93SM4_CB7]

Tried this and couldnt even get the screws off.. the thing started to strip ... any ideas i really want to get this done i know its been on there for a while OEM Denso and it seems crusty (does autozone carry Pb blaster)?

[mrvinyl33]

I was re-reviewing this and just realized Honda sells the filter and gasket separately if needed. This may help those that only unbolt and unplug the EACV, but keep the coolant hoses in place (if there's just enough room to tilt this up and swap them out).

The gasket may be needed even if following the DIY, due to age.

36454-PS4-003 FILTER, ELECTRONIC AIR CONTROLVALVE (TOYO ROKI) 3.83
36455-PT3-A01GASKET, ELECTRONIC AIR CONTROLVALVE (DENSO) 2.40

[Juan4DCB7]

Tools:
9. If the idle is off a bit, you could adjust by turning the idle
adjust screw below the throttle body mine was fine so I didn't have to do
that.

Good luck guys, hope this helps.

does anyone have a picture of the idle adjust screw.

please i will appreciate it if any one can help.

[benjerman112]

does anyone have a picture of the idle adjust screw.

please i will appreciate it if any one can help.

the right TB upper left by the nut.

[Juan4DCB7]

that one right

[Jon]

that one right

Yep.

[Juan4DCB7]

thanks bro

[mrvinyl33]

For the beginners reading this:

I did the beginner's version of this DIY a few weeks ago with success. (remove bolts--keep coolant lines intact).

I already had the EGR ports cleaned several years ago and the standard tune-up items have been dealt with as well. I had the low idle with A/C on symptom.

I sprayed a corrosion preventer on the 2 bolts the night before and was able to remove the 12mm bolts with a recently purchased low profile rachet. I used 99% alcohol with medical swabs to clean the EACV filter and the diaphram in the other hole. I did the idle reset, and I noted an immediate difference in idle under load i.e., A/C on---idle maintained.

My EACV was not as dirty as some I've seen on here, so apparently it did not need a full removal and spraying with carb/throttle cleaner.

[Vash744]

Bump!

Dusting off this DIY, I couldnt find it without the search feature lol.