Do you ever clean your throttle body?

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If there is a phenomena you're trying to track down, it's a cheap and easy thing to do. Otherwise I'd leave it alone. They do get dirty, but that by itself isn't a huge deal.
 
Due to the PCV system on all my vehicles, i regularly clean all the throttle bodies with CRC throttle-body cleaner. I can clean them a couple times a year and i still get the paper towel covered in black carbony stuff each time. I notice an improvement in idle, and a warm fuzzy feeling.

You can clean them without removong the TB, just slide the boot off and manually open the valve to spray and wipe both sides. The CRC has a dry lube it leaves behind to lube the pivot surfaces.
 
What would cause a high idle after Cleaning it? My idle was around 1600rpm for several miles once I was able to shut the car off and back on it's been fine.
 
I agree with SOHCman. I do it on our vehicles as preventative maintenance. If done on a regular basis, it's quick and easy.

I've noticed over the years that cars that burn oil REALLY need this done fairly often .. maybe once a year. As the blow by gasses are sucked back through the PCV system and reburned, those cars TB's really get gunked up.
 
Originally Posted By: ram_man
What would cause a high idle after Cleaning it? My idle was around 1600rpm for several miles once I was able to shut the car off and back on it's been fine.


That sounds like your car "learned" to open the idle control valve to make up for a clogged butterfly valve. Once you cleaned it, it took it a few miles to relearn with flow restored.
 
I cleaned the TB on my fuel injected '88 Accord at ~130K miles.
Had to re-adjust the "base idle" (IACV disconnected) to bring the idle back down to spec.
Base idle had been adjusted up a couple of times over the years according to FSM.
 
Originally Posted By: circuitsmith
I cleaned the TB on my fuel injected '88 Accord at ~130K miles.
Had to re-adjust the "base idle" (IACV disconnected) to bring the idle back down to spec.
Base idle had been adjusted up a couple of times over the years according to FSM.


What about the Matrix and any other issues you've had with it?
 
Originally Posted By: satinsilver
[/quote]What about the Matrix and any other issues you've had with it?


I will clean the TB at 100K miles, unless there's an issue sooner.
The throttle on the Accord started to feel a little sticky, first time opening after a cold start.
 
I don't know if it's hard to access on your car, I cleaned mine on Chrysler Cirrus 2000. You can just remove the air tubing and see if it's dirty and sticky. If not, I see no point. Mine was pretty clean with 250k kilometers and I "cleaned" it but saw 0 difference.
 
SOHCman has the best advice and procedure. No need to remove the TB as that creates extra work and may actually cause issues on some brands. However cleaning on-vehicle is of great benefit.

I love reading about the notion of dont bother cleaning the TB, it'll only get dirty again. I use the same excuse when taking showers...I only do it once a month because I'll only get dirty again.
wink.gif
 
Clean the one on the Expedition about once a year, as it gets sticky. The ones on the M5 are a lot more of a challenge to get to in order to even see if they need cleaning. And there are eight of them. So I've never bothered.
 
I try to clean mine with STP tb cleaner every 10k or so. It helps smooth the idle and I have never had any issues with a CEL on my DBW car.
 
Never had a car that needed it. Though I'll occasionally pull the intake hose off and shoot TB cleaner into the IAC valve intake hole if I suspect its starting to act up.
 
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Originally Posted By: satinsilver
How much should a shop charge for this service? For an 05 Matrix.

Usually repair shops will not simply clean the TB, instead, they will always sell you a package which includes:
1. Seafoam style treatment
2. Some additive that gets poured in the fuel tank
3. and finally the TB cleaning

And then, expect to pay ~$80 for that package
 
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