Cleaning throttle body/Intake sensors help.

[LeeThr]

After reading another thread about car's running like a dog, made me realise mine could do with the same thing.
The 206 has been running like crap for a while now, especially after pulling the K&N I had on it off after putting the whole thing in limp home mode one night. The whole car just seems down on power, and really doesnt want to rev, its an absolute bh when its stone dead cold almost stalling at some points. Also the whole engine bay seems to be coverd in some dust like substance so this must be clogging something up as well.

Can anybody tell me which bits I need to clean and how to remove them, and what I need to clean them? Thanks

[Camaro91]

Hi

Has your car thrown any trouble codes at all? I'm not sure how you read them on a 206 but I'm sure if you look on Google it will tell you how. This will help you eliminate the possibility of a fault on the engine management side of things (sensors etc).

Assuming it is something as simple as detritus in the air intake (you mentioned that you ran it without a filter?), you can buy alcohol-based sprays for this purpose, spray them into the throttle body and onto the throttle butterly to remove any gunk. Also if your car has a MAF sensor which you can access, you can spray it onto the small resistive wire (on some systems these 'self clean' using a short period of high current, although how well it copes with heavy contamination I'm not sure).

Matthew

[LeeThr]

I didnt run it without a filter, I ment after I pulled the K&N and went back to the standard air box.

I did read the ECU which did throw an O2 sensor fault.

Need to find out which sensors to pull out and how to pull them out.

[Defcon5]

Carb cleaner is your friend - remove all the intake pipework down to the TB, get a friend to rev the car whilst you spray the carb cleaner down the TB, dont let it stall.

[LeeThr]

Defcon5 said:

Carb cleaner is your friend - remove all the intake pipework down to the TB, get a friend to rev the car whilst you spray the carb cleaner down the TB, dont let it stall.

Carb cleaner on an electronicly fuel injected car? :S

[Defcon5]

LeeThr said:

Defcon5 said:

Carb cleaner is your friend - remove all the intake pipework down to the TB, get a friend to rev the car whilst you spray the carb cleaner down the TB, dont let it stall.

Carb cleaner on an electronicly fuel injected car? :S

Yep

[Camaro91]

Well your O2 sensor may affect how the ECU adjusts the mixture going into the engine for combustion.

I'm not familiar with Peugeot fault codes but did it give you any inkling if it was an actual fault with the O2 sensor, or was the O2 sensor reporting a rich/lean mixture?

Matthew

[Camaro91]

Defcon5 said:

LeeThr said:

Defcon5 said:

Carb cleaner is your friend - remove all the intake pipework down to the TB, get a friend to rev the car whilst you spray the carb cleaner down the TB, dont let it stall.

Carb cleaner on an electronicly fuel injected car? :S

Yep

Carb cleaner / intake cleaner - just a can of alcohol with a propellant for removing crap from intakes

[LeeThr]

http://www.flickr.com/photos/35147290@N08/33469788...

Theres a borrowed picture of the engine bay, I take it I just pull the pipe leading from the air box up to the body off and then spray it down that hole?

[Egg Chaser]

LeeThr said:

I did read the ECU which did throw an O2 sensor fault.

Have you thought that maybe that's why it's running crap?

[LeeThr]

Egg Chaser said:

LeeThr said:

I did read the ECU which did throw an O2 sensor fault.

Have you thought that maybe that's why it's running crap?

This was when it had the stupid K&N on it, its yet to throw it up with the standard airbox back on.

[Defcon5]

LeeThr said:

Egg Chaser said:

LeeThr said:

I did read the ECU which did throw an O2 sensor fault.

Have you thought that maybe that's why it's running crap?

This was when it had the stupid K&N on it, its yet to throw it up with the standard airbox back on.

Was it an oiled filter and does your car have a MAF or a MAP sensor?

[LeeThr]

Defcon5 said:

LeeThr said:

Egg Chaser said:

LeeThr said:

I did read the ECU which did throw an O2 sensor fault.

Have you thought that maybe that's why it's running crap?

This was when it had the stupid K&N on it, its yet to throw it up with the standard airbox back on.

Was it an oiled filter and does your car have a MAF or a MAP sensor?

Dont think it was. Urrrm.... No idea if im honest. How do I find out?

[Chiswickboy]

If its a K&N filter then the instructions will tell you all about oiling and cleaning. You did keep them when you fitted it, didn't you?

[LeeThr]

Chiswickboy said:

If its a K&N filter then the instructions will tell you all about oiling and cleaning. You did keep them when you fitted it, didn't you?

I didnt get them, a mate had it spare lying around in his shed after upgrading his own. The K&N isnt on it, and hasnt been for about 2 months. It's running its standard air box and panel filter.

[Dr Doofenshmirtz]

LeeThr said:

Defcon5 said:

LeeThr said:

Egg Chaser said:

LeeThr said:

I did read the ECU which did throw an O2 sensor fault.

Have you thought that maybe that's why it's running crap?

This was when it had the stupid K&N on it, its yet to throw it up with the standard airbox back on.

Was it an oiled filter and does your car have a MAF or a MAP sensor?

Dont think it was. Urrrm.... No idea if im honest. How do I find out?

They have MAP sensors.
A failing MAP sensor can give the problem you describe - but I suspect maybe you haven't plugged something right after replacing the stock air box? Did it have an air intake temperature probe?

[rawkyjnr]

It's been known for people to over-oil those filters and the oil gets sucked into the engine and sticks to the MAF wire. This alters the resistance of the wire and makes the car run terribly.

[LeeThr]

Dr Doofenshmirtz said:

LeeThr said:

Defcon5 said:

LeeThr said:

Egg Chaser said:

LeeThr said:

I did read the ECU which did throw an O2 sensor fault.

Have you thought that maybe that's why it's running crap?

This was when it had the stupid K&N on it, its yet to throw it up with the standard airbox back on.

Was it an oiled filter and does your car have a MAF or a MAP sensor?

Dont think it was. Urrrm.... No idea if im honest. How do I find out?

They have MAP sensors.
A failing MAP sensor can give the problem you describe - but I suspect maybe you haven't plugged something right after replacing the stock air box? Did it have an air intake temperature probe?

Didnt touch any of the sensors, littlerally just pulled the top of the air box off attacthed the filter to the pipe and shut the bonnet. Well I didnt my mate who gave me the filter did.

Also dont think we put any oil on it either.

[LeeThr]

Is anybody going to help me by telling me how to clean the MAP sensor?

Or shall I just go lift the bonnet and start pulling various pieces apart and hope for the best?