EGT and Lambda questions

[TopBear]

Don't clear your DTC's and check what your block 32 values are.

I'd replace the MAF first, and go from there.

[Contigo]

Cheers Mate

I've heard people say "Disconnect the Maf" and then try running the car etc... Is a MAF really needed if you can run without one, I'm sure I'vee seen a thread where someone ripped their out, MAF's are a PITA and cause so many running problems it's untrue!

[spurtle]

Pretty sure 95RON could not cause this unless you got a bad batch (though the wife probably still deserves punishment).

Like TopBear says, use VAG-COM to check the fuel trims (often a bad lambda won't throw a code, but you'll spot it because the trims will be way off). Then clear DTCs, and check for codes after (i) a couple of miles and (ii) say, 100 miles when the ECU has adjusted the fuel trims. If the main culprit is the lambda, then (depending on how shot it is) you may notice it drive better after clearing the codes.

And yes, you need a MAF ... if you disconnect it, it switches to a default map (OK for a couple of miles, but will confound other problems and potentially cause engine damage if you push it). MAF is relatively inexpensive and you will notice an improvement whether or not it was the culprit.

[Contigo]

Been in today for diagnosis and it needs new MAF and both O2 sensors, the EGT codes ain't come back up since wknd but we can change them if needed! WD will cover the cost of these three items too

[eyeball]

You lucky git!! I wish I'd remebered I had WD when mine were replaced. Do they cover clutches or is that just are n tare??

[Contigo]

No clutch plates but parts like release bearing are covered. Gonna get it all done this week! Then drive it and see if the EGT's need doing too!

[eyeball]

nice one mate...That would ahve cost you a few bob im sure. Did they try and worm out of it or was it nice and simple?

[Contigo]

Car is back now...... RAP RAP RAP RAPIIIIIIDO

[eyeball]

Glsd you got her back phil, so she feels even guicker now??? Hmmm...remap!!lol
On a slightly different note mate, you say that synta gold is the oil of choice but where's best to buy it from and how mant litres do I need??

[neckarsulm]

Synta Gold has been replaced by Synta Platinum - you need 6L
I get mine from Audi, not sure if GSF still do it anymore for a bit less.

[Contigo]

Jeez!!! i was just going to ask the same thing, mind reader. I knew Synta Gold had been replaced but was going to ask what with

Yes the car pulls really well now, back to square one

[eyeball]

Great minds my friend, great minds!! lol
Probably a good idea to give yours a fresh slurp of the black stuff now she's back on form again. Yes I've had a bit of a search but nothing coming up. I've seen the post on classifidieds from the oilman but no luck there. Is this oils the best for types of car ie modded and bog standard??

[Contigo]

Fully snthetic and 5W40 is the best. Quantum Synta Gold was the approved VAG oil and is recommended by all.

I'm off to try and source the Synta Platinum. Will let you know how I get on.

[eyeball]

nice one phil...catch you later....I'll see what I can find aswell

[Contigo]

So got EGT2 done today and here are som runs measuring block 3.

223.66 1880 15.36 7.8 33
224.06 1960 36.89 15.3 27.8
224.46 2040 27.56 11.8 30
224.86 2080 36.56 14.9 30
225.27 2240 53.11 27.1 27.8
225.67 2440 68.22 28.6 27
226.07 2720 84.72 30.6 27.8
226.47 3040 103.44 32.5 21.8
226.87 3280 100.33 24.3 8.3
227.27 3480 45.58 14.5 34.5
227.69 3600 29.53 11 36.8
228.18 3760 118.83 40 30
228.58 4080 153.44 77.6 27.8
229 4520 200.03 100 21
229.43 5000 290.69 100 14.3
229.9 5640 328.72 100 13.5
230.38 6280 343.67 100 15.8
230.86 6760 185.78 18.4 7.5
231.37 5880 10.28 7.1 42
231.83 4760 172.08 43.1 29.3
232.26 4920 179.56 43.9 27.8
232.71 5080 164.97 34.5 31.5
233.16 5160 120 23.5 32.3
233.61 5200 91.56 20 33.8
234.07 5240 89.44 19.6 33.8
234.52 5360 206.67 100 25.5
234.98 5600 309.83 100 14.3
235.46 5880 327.03 100 15

I make 343g/s around the 430bhp mark.

Anyone confirm this?

Thanks