So cars been idling rough, can't afford for a mechanic to look at it and play guessing games charging me for stuff I don't need doing. I bought myself a cheap scanner off flea bay and getting some codes any help diagnosing this and sorting the problem is greatly appreciated the codes are

16556

17549

16486

The car idle rough but when driving is fine its affecting my MPG, engine temperature on the dash is fine never goes above or below what it should. If you need anymore info to help you assist me with this problem then please don't hesitate to ask.

All those codes relate to the MAF sensor. Unplug the MAF & if the car runs better you have a goosed MAF. Replace with a genuine VAG part or you'll be buying twice.

Edited 17 April, 201313 yr by pauldazzle

Would that cause rough idling aswell? We're is the MAF located and will give it a go

My car is a 2001 skoda octavia estate 1.6 petrol

Here is a list of codes:-

http://wiki.ross-tech.com/wiki/index.php/Category:Fault_Codes

http://wiki.ross-tech.com/wiki/index.php/16486/P0102/000258

Coolant temp sensor would be a prime suspect for bad idle. Your temp gauge is not an indication of a fully functioning CTS. The CTS has 2 outputs, one to the guage & the other to the ECU. It's extremely common for one of the outputs to fail. If the ECU side goes down the ECU will not fuel correctly i.e. poor idle or poor hot or cold starting are common symptoms of this. VAG revised the CTS to the later green sensor because the old black type failed so often. It's essential to replace with a genuine VAG part & not a cheap ebay/aftermarket part.

Great thanks will have a look need to get the problem sorted its doing my nut in driving around and when stopped at lights it's revving. Any idea on part numbers so I can shop around for a part or even better recommend one link if possible

Ok I was wondering about the temp sensor as googled it and its a common fault but wasn't sure as the temp gauge was right might give that a go u just don't wanna throw money at the car replacing everything to find out its something simple

Isn't there an upgrade for the temp sensor? Any chance of a link or part number would be a great help