MAF, Coil or Throttle body

[PolizeiYT]

Hi all,

Getting my head into a spin, been reading soo many posts.

I've had my 2001 Cupra for 7 weeks now, very good....\

Have replaced the engine temp sensor (from Black to Green) and put an uprated DV Valve (Audi TT 225 one) due to x2 fault codes, also had oil, filters changed in last week.

In the last week I have started to experience a lumpy idle in the car.

When starting from cold it's lumpy for a couple of minutes till warm, then no problem......

If I've been driving around (50+ mph) and come to a junction the revs drop from normal idle (800rpm) to about 500rpm every 5 - 10 seconds.

It's there if hot or cold, thoughts on the problem, MAF, Coil pack or throttle body clean?

With thanks,

Whitey

 

[Mr OCD]

I'd try MAF and TB clean first and see if it improves... worth doing on any Cupra... have you got access to VAGCOM?

 

[Hamzilla]

How do you know if MAF readings are low? What are the normal values a MAF should report?

 

[drue1]

try giving the TB i clean with carb cleaner first because ive got a low reading on my maf and the car is running fine.Most cars with ruff idle thats the first i give a clean

 

[slim20vt]

lambarda senser? im sure i read that some where!!

try asking bill badger from badger tunning
he is in the tunning section real nice bloke help is free.
and he knows his seats.........

cheers

 

[PolizeiYT]

typically all been fine since posting here lol, but I've a friend with VAG.com so will see about MAF readings (is it obvious if there are low readings?).
I'll also get some cleaner for the throttle body as I want to try Halfrauds for some custom touch up paint.

Best,

Whitey

 

[PolizeiYT]

Just to keep informed, gave the throttle body the full works cleaning wise, OMG what a difference it makes to the way the car drives!!

Cheers all!

Whitey

 

[mike2926]

hi guys,

sorry to hijack but would i need anything like gaskets or anything to put the TB back on? is there any chance of messing a TB clean up?

cheers

 

[ell0070]

Check this out

http://briskoda.net/technical-guides/cleaning-throttle-body-1-8t-engine/145866/

 

[mike2926]

fantastic,

great guide. cheers buddy

 

[ell0070]

No worries.

Gonna give it a go myself when i get the time

 

[mike2926]

i got a price from the stealers for the gasket as i was up there at lunch and they are only a fiver

cheers

 

[ell0070]

Nice one. I've already got some degreaser, so i'll just use that.

 

[mike2926]

it is next day arrival as well so if you order it now it will be at the stealer in the morning

 

[AmanParhar]

Hi guys, I'll proble give my TB a clean aswell, but I have a 1.8 20v non turbo engine, so is my throttle body just the bit after the maf?

 

[Mr Roboto]

Hi all,

Getting my head into a spin, been reading soo many posts.

I've had my 2001 Cupra for 7 weeks now, very good....\

Have replaced the engine temp sensor (from Black to Green) and put an uprated DV Valve (Audi TT 225 one) due to x2 fault codes, also had oil, filters changed in last week.

In the last week I have started to experience a lumpy idle in the car.

When starting from cold it's lumpy for a couple of minutes till warm, then no problem......

If I've been driving around (50+ mph) and come to a junction the revs drop from normal idle (800rpm) to about 500rpm every 5 - 10 seconds.

It's there if hot or cold, thoughts on the problem, MAF, Coil pack or throttle body clean?

With thanks,

Whitey

I recently had this headache

Did all the above to no avail

Turn out to be my 100 cell cat was the problem. So after getting a wicked price of Nigel at blueflame I put my 200 cell on and problem solved

 

[PolizeiYT]

What's the/a "100 cell cat" ??

Ok it's in the exhaust....

Whitey

 

[JayFR150]

What's the/a "100 cell cat" ??

Ok it's in the exhaust....

Whitey

straight away i would say lambda sensor i had this on an MG i used to own, up and down idle revs.