HELP - Air Mass Meter

I own a Seat Leon 1.9TDI & need to replace the Air Mass Meter, I have ordered one from Ebay for £36.00.

I am an computer Tech. (hardware) by trade so am pretty good with parts--- can someone please give me some advise on how to replace the AMM & what to look out for.

Reason for the replacement is that the car looses punch once over 70mph and does not have any pick left.

Any comments will be appreciated.

Very common failing on VAG cars- I would consider the AMM to be a service part!

Its clipped / screwed to the outlet pipe at the airfilter casing- the pipe that leads to the turbo. It has a 5 or 6 wire multiplug. Change over is about 10mins.

Tim..

Just replaced the one on my A3 TDi. Very easy. One host clip (use water-pump pliers), 2 screws, one plug.

I own a Seat Leon 1.9TDI & need to replace the Air Mass Meter, I have ordered one from Ebay for £36.00.

I am an computer Tech. (hardware) by trade so am pretty good with parts--- can someone please give me some advise on how to replace the AMM & what to look out for.

Reason for the replacement is that the car looses punch once over 70mph and does not have any pick left.

Any comments will be appreciated.

It is usually easier to replace just the sensor but they are usually held in by security torx bolts. When you get the new one you will see what I mean.

A word of caution though, you have probably bought a cheap unbranded one (not Bosch) these are often refurbished units and can be crap. I bought one for my Passat and it ran like a pig (kangarooing etc). Got my money back (lukily) and put in a proper Bosch unit which sorted it out.

I would not touch an unbranded one again. By the way, if it is unbranded you could have bought one from EuroCarParts for £28 + vat and had 12 month warranty. Ebay is not always a bargain.

Paul

- Were you car symptoms same as mine "Reason for the replacement is that the car looses punch once over 70mph and does not have any pick left"

Pretty much. Just generally a bit flat. The simple test is to disconnect the multiplug connected to it. If the MAF is OK, disconnectiong it will make the car perform very badly. No smoke, maybe not even a warning light!. If the performance doesn't change much with it disconnected, replace the AMM/MAF.

I got a genuine bosch unit, with a housing (so you don't need security torx bits, just a Pozi screwdriver and a pair of pliers for the hose clip) from ECP for about £70.

-- UPDATAE--

Changed the AMM today with a genuine BOSCH unit - works like a dream, car goes like a bullet-- THANKS ALL> GREAT HELP

Dead straight line until it hits something? Ouch.

"UK1491" wrote in news: snipped-for-privacy@b28g2000cwb.googlegroups.com:

I used to have a bullet like that... ;-)