Project Free Mazda: Cleaning the Idle Air Control Valve at 3 AM

Kinja'd!!! "Luc - The Acadian Oppo" (luc5)
09/14/2014 at 11:50 • Filed to: PROJECT FREE MAZDA

Kinja'd!!!5 Kinja'd!!! 13

Before we start...Doing automotive repairs at 3AM in your apartment kitchen is a perfectly normal thing to do right? RIGHT?

I was still awake and felt like being productive and try do get to the bottom of the !!!error: Indecipherable SUB-paragraph formatting!!! issue.

!!! UNKNOWN CONTENT TYPE !!!

I started off by going downstairs around 3AM to take the throttle body off. It was uneventful and everything went smoothly.

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Then I separated the Idle Air Control Valve (IACV) from the throttle body.

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Took a look inside and it is totally filthy and filled with carbon deposits.

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luckily I picked up some Throttle body cleaner at Napa when I changed the thermostat especially for this project in mind.

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Sprayed a bit of cleaner in the valve and one swipe of the Q-tip and it came out as black as black can be.

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kept at it until it was totally clean it's quite the difference.

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It's now about 3:45 AM the Throttle body and IACV is but together again I run downstairs put the car back together again around 4AM everything is reassembled under the hood. Turn the key and guess what??? cleaning the valve did not do a damn thing to fix my issue!

Ah well it was worth the try.

Car Purchase $1.00

Valve Cover Gasket $28.99

Thermostat $7.99

Thermostat Gasket $1.49

Overpriced Coolant $10.99

Radiator Fan Switch $37.99

Coolant Temp Sensor $26.99

New o'rings for the injectors $2.58

Toggle switch and related hardware $9.00

Throttle Body Cleaner $7.99

Total invested so far : $135.01


DISCUSSION (13)


Kinja'd!!! nFamousCJ - Keeper of Stringbean, Gengars and a Deezul > Luc - The Acadian Oppo
09/14/2014 at 12:01

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kitchen counters make for nice work benches. I clean my k&n in my bathtub (apartment living, no hose, bleach the tub afterwards cause it will be dyed pink and black)


Kinja'd!!! Brian, The Life of > Luc - The Acadian Oppo
09/14/2014 at 12:05

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Did you ever check for that vacuum leak?


Kinja'd!!! Luc - The Acadian Oppo > nFamousCJ - Keeper of Stringbean, Gengars and a Deezul
09/14/2014 at 12:05

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that's the reason I switched to dry flow filters. I just dunk the filter in a bucket(my mop bucket) of soapy water let it sit in the water for 30 mins or so, give it a shake,remove,let dry and your done.

I cleaned one oiled filter in my apartment and never again. I almost died by inhaling the fumes of the filter cleaner.


Kinja'd!!! deekster_caddy > Luc - The Acadian Oppo
09/14/2014 at 12:08

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Doing automotive repairs at 3AM in your apartment kitchen is a perfectly normal thing to do right? RIGHT?

Totally normal. Don't worry about anything. You are fine. Do you have neighbors? Working in a garage or outside? Kids?

Erratic idle when cold... I'm assuming you've tried things like MAF cleaner (or new MAF sensor), MAP sensor, quadruple check all vacuum lines and fittings? Even if the lines are good, sometimes the rubber fittings that join them get cracks. Checked fuel pressure and regulator?


Kinja'd!!! Luc - The Acadian Oppo > Brian, The Life of
09/14/2014 at 12:09

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Yes and I didn't find anything.

I should probably state that I'm completely deaf in one ear and I only have about 60% hearing in the other ear, so listening for high pitch sounds is not something I'm quite qualified for, for all I know there might be a leak and I'm just not hearing it.


Kinja'd!!! Brian, The Life of > Luc - The Acadian Oppo
09/14/2014 at 12:16

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Try using something like carb cleaner spray lightly on the vacuum lines. A vacuum leak will draw some of the fluid in and can often create a very temporary "fix" and the car's idle will improve. If the idle goes normal after spraying a specific vacuum component, you've found the leak.


Kinja'd!!! Luc - The Acadian Oppo > Brian, The Life of
09/14/2014 at 12:22

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Should I be worried of fires if I spray lightly? last thing I want is for the whole thing to go up in flames.

I know my way around a wrench but I'm in no way a mechanic.I'll have to check the Haynes repair manual and see if there is a vacuum diagram since I don't know where all the vacuum lines are.


Kinja'd!!! Luc - The Acadian Oppo > deekster_caddy
09/14/2014 at 12:27

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for now I have no kids and I'm doing the work outside.But I have a house under construction with a 3 car garage that should be ready in November.

I'm still hunting for a vacuum leak but haven't found any yet. I did not touch anything like the MAF or MAP. cleaning the MAF is simple enough so I have no excuse for not doing it yet let's just say I didn't think of it so I'll do that today sometime.


Kinja'd!!! Dr. Zoidberg - RIP Oppo > Luc - The Acadian Oppo
09/14/2014 at 12:47

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Awesome work!


Kinja'd!!! Brian, The Life of > Luc - The Acadian Oppo
09/14/2014 at 12:52

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First, always have a fire extinguisher handy when wrenching. As to fire danger, not much.


Kinja'd!!! deekster_caddy > Luc - The Acadian Oppo
09/14/2014 at 12:56

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Before you do anything else mechanical or replace any other parts, go over every single vacuum line and connector.


Kinja'd!!! Turk > Luc - The Acadian Oppo
09/14/2014 at 13:05

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Not much time to read right now but I couldn't miss the chance to approve the part about cleaning parts in your kitchen at 3AM. More than normal... in fact almost expected...

...around here anyway.


Kinja'd!!! Luc - The Acadian Oppo > deekster_caddy
09/15/2014 at 00:07

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will do