EML light was on, now its not. But I didn't change anything!

[coops10]

Ok when the light first came on i had the code read by Jamie Bennett, thanks! Here was the codes:

------------------------------------------------------------------------------------------------
VAG-COM Version: Release 311.2-N

Control Module Part Number: 1ML 906 032
Component and/or Version: 1.8l R4/5VT 0001
Software Coding: 10510
Work Shop Code: WSC 63002
Additional Info: VSSZZZ1MZ3R068245 SEZ7Z0B1797123
2 Faults Found:
17704 - Error in Mapped Cooling System (usually temp Sensor or Thermostat)
P1296 - 35-00 - -
16486 - Mass Air Flow Sensor (G70): Signal too Low
P0102 - 35-10 - - - Intermittent
------------------------------------------------------------------------------------------------

He cleared the codes and off I went, knowing I would need to get it changed.

Around two weeks later the light came on again as expected so I started looking to buy the parts.

But strangely after a week the light went off again and has been off for about three weeks now!

I have not had a chance to vagcom it again so was wondering if there's any reason it would go off and stay off?

Im starting to think the bulb has blown lol

 

[coops10]

Anyone?

 

[JamJay]

I have the same issue with my Cat at the moment. It appears to only come on when it's reading values that it doesn't expect, then when it's happy with them, off it goes. I have no idea what issues you have, is one MAF failure? Maybe your MAF is on it's way out and sometimes works, sometimes doesn't so sometimes it pleases the ECU, other time not?

 

[sheffboy]

Is the car running ok? I helped a friend with his mk4 golf recently. he had the EML light on and vag com brought up a fault with the oxygen sensor. I cleared it and its not returned. It's been over a month.

The cold weather can have bad effects on sensors and electrical connections.

 

[MrBen2k7]

Intermittent MAF problem by the sounds of it.

 

[coops10]

I have the same issue with my Cat at the moment. It appears to only come on when it's reading values that it doesn't expect, then when it's happy with them, off it goes. I have no idea what issues you have, is one MAF failure? Maybe your MAF is on it's way out and sometimes works, sometimes doesn't so sometimes it pleases the ECU, other time not?

Ive got a feeling the MAF is on the way out, and thats what Jamie suggested when we first read the codes. I have been looking into getting a replacement, the only problem is im barely affording the petrol at the moment

Is the car running ok? I helped a friend with his mk4 golf recently. he had the EML light on and vag com brought up a fault with the oxygen sensor. I cleared it and its not returned. It's been over a month.

The cold weather can have bad effects on sensors and electrical connections.

Its seems to be running ok, can be a bit lumpy and jolty when cold, but once warmed up its fine.

I was quite dissapointed I only managed a 14.9 at santa pod recently, was hoping for around the 14.0 sec mark with the 270bhp ive been told i should be running.

Could a dodgey MAF affect performace this much?

Thanks for the input guys.

 

[traumapat]

Maf will cause worsening performance as it dies

 

[coops10]

Maf will cause worsening performance as it dies

Any idea how much worse ?

 

[JamJay]

Any idea how much worse ?

Pretty shocking, BHP will most likely dip under 200 or 190 with a completely sh@gged one from memory.

 

[coops10]

Pretty shocking, BHP will most likely dip under 200 or 190 with a completely sh@gged one from memory.

Maybe that explains my poor quarter mile time then at only 14.9, it did feel a bit flat in 3rd compared to what I was used to.

Should of spent the cash on a new MAF then and not a squash racquet. Doh!!

 

[JamJay]

Maybe that explains my poor quarter mile time then at only 14.9, it did feel a bit flat in 3rd compared to what I was used to.

Should of spent the cash on a new MAF then and not a squash racquet. Doh!!

That is based on a standard map, with a remapped LCR that has MAF failure, you'd pobably see close to OE performance figures.

 

[coops10]

That is based on a standard map, with a remapped LCR that has MAF failure, you'd pobably see close to OE performance figures.

Which makes perfect sense as someone said a 14.9 is what standard LCR's run on the quarter mile