Doesn't accelerate cleanly through the gears

[narse]

First post... I have been reading the forum since I bought my Leon (1.8 20V T Sport) a couple of months ago and I wondered if anyone has any suggestions or idea's.

Basically the car runs fine most of the time. However if I rev all the way through a gear, the car seems to bog down as if there is an lack of air or fuel at higher recs. This doesn't happen all of the time and is obviously more noticeable in the higher gears. I have checked with vag-com and there are no errors, and I have taken a look at the air filter and it looks ok. Is there anything else I should check?

Also does anyone know a good garage in the Reading area for servicing the car.

Thanks,
Rob

 

[ibizacupra]

MAF sensor..
try unplugging it and see if it drives better.. if so, its expiring and you need a new one.

1st place to try.

 

[L17KKE]

wheres the maf sensor cause i have a similar problem sometimes in my leon

 

[JamJay]

The sensor that bolts onto the air intake to measure the airflow.

 

[narse]

Thanks for the reply I will try disconnecting the sensor and see if it makes a difference.

Will there be any problems with running the car without the sensor connected? I guess that the engine warning light will come on?

Rob

 

[MrBen2k7]

It shouldn't cause any problems, it's advised not to do it for too long though.

New MAF is like £80, but you can send the old one back and get £20 back from some sites. As they referb the housing.

 

[narse]

Disconnected the MAF sensor and now the car is as smooth as anything. Also hadn't bothered me before, but first thing in the morning before it warmed up it would also feel a bit odd and that feeling has gone away too.

So now I have another question. Should I change the MAF sensor or should I clean it? There is a really useful guide on the forum on how to remove it and clean it, but it also mentions that the sensors are prone to failure. Does anyone else have experience of this and weather cleaning the sensor fixed it?

By the way where can I buy "Isopropyl Alcohol" from if I do decide to clean it in?

Thanks again,
Rob

 

[MrBen2k7]

I cleaned mine, and it worked ok for a week or so, then broke again, so I tried to clean it again, but to no avail.

So I had to get a new one... make sure you get a proper Bosch one, as I got a cheapy one, and it failed after a few weeks, and caused irratic idle RPM's.

 

[cappitman]

Don't know if you have tried Seat at Emmer Green ,they have been really taken apart on here for bad service but it was a long time ago (years i think) I resently used them for a couple of parts and the service centre for a small problem and found them really helpful. One of the staff told me about this site and the stick the dealership had taken in the past ...so maybe things have changed for the better thanks to comments on here.

 

[cupra-rich]

maplins for ipa
http://www.maplin.co.uk/module.aspx?moduleno=28994

 

[markgb]

Could it be the N75 valve as well, mine has similar syptoms. I have checked the MAF and all seems fine with it.

 

[jamiebennett81]

I love it on here......

I work in IT, and the first thing we say is "have you rebooted your PC"

the equivalent on here is "have you replaced your MAF"

 

[danny20vt]

I love it on here......

I work in IT, and the first thing we say is "have you rebooted your PC"

the equivalent on here is "have you replaced your MAF"

Guess what?


I'm just about to reboot my MAF!

or should that be replace my PC

 

[Shaunyboy]

Guess what?


I'm just about to reboot my MAF!

or should that be replace my PC

if only it was that simple.

 

[danny20vt]

if only it was that simple.

funny thing is, my PC has died, I'm borrowing a friends laptop and my MAF is slowly loosing life too

 

[narse]

Thanks for everyone's responses. I changed the MAF sensor with a reconditioned Bosch part from Eurocarparts (70ish quid if I gave them my old one). Car is running much better now. I'll have to see if it improves my mpg too.

Still on the lookout for a good local garage in or around Reading if anyone knows of one. The Seat dealer on the Peppard road is fairly local for me, but hoping to find a good independent as I am not keen on dealer prices

Thanks again,
Rob

 

[jamiebennett81]

Thanks for everyone's responses. I changed the MAF sensor with a reconditioned Bosch part from Eurocarparts (70ish quid if I gave them my old one). Car is running much better now. I'll have to see if it improves my mpg too.

Still on the lookout for a good local garage in or around Reading if anyone knows of one. The Seat dealer on the Peppard road is fairly local for me, but hoping to find a good independent as I am not keen on dealer prices

Thanks again,
Rob

look up Storm Developments (www.stormdevelopments.co.uk), just down the road from Reading

excellent service and specialise in VAG tuning...cant recommend them enough mate, as do a lot of others on here too