sledgehammer

Hi folks,

hoping someone can give me some suggestions on what to try/look for

I've got a stock 2000 S4 that over the last couple of days has started to ocassionally "stumble". It starts and idles ok but when driving at on motorway it will ocassionally "miss a beat" - i'm afraid that's the best way i can describe it.

A work colleague brought his copy of vag-com in and read out the faults

5 Faults Found:
17535 - Fuel Trim; Bank 1 (Mult): System too Rich
P1127 - 35-00 - -
17537 - Fuel Trim; Bank 2 (Mult): System too Rich
P1129 - 35-00 - -
16487 - Mass Air Flow Sensor (G70): Signal too High
P0103 - 35-10 - - - Intermittent
17535 - Fuel Trim; Bank 1 (Mult): System too Rich
P1127 - 35-00 - -
17537 - Fuel Trim; Bank 2 (Mult): System too Rich
P1129 - 35-00 - -

Looking at this i'd guess that maybe the MAF has had it, but i'm no expert by any means.

Because of the age of the car i'm not inclined to go to a dealer if i can sort this out myself but i'd like some second opinions before diving in.

Also do you guys think i'd risk damaging anything by still driving the car until the weekend?

thanks in advance for any suggestions/advice...
Sledge

Nigel (no more S4)

broken MAF, unplug it until you fix it

pitchS4

I have a MY2000 bosch MAF if you need a replacement

obviouspro

Whats the difference between Mass Air Flow Sensor (G70): Signal too High and signal too low?

sledgehammer

What effect will that have ?If i unplug the MAF won't that make it try to lean the engine out to the point where it might damage it? or is there some kind of fail-safe built-in?

cheers

Nigel (no more S4)

it'll run in speed density mode, ECU is smart

sledgehammer

excellent - thanks for your help & advise

S4_Cinci (I S'edTFA)

built in as a failsafe mode.