running abit lean

[DubSociety]

100 miles is cr4p ... £20 VPower is basically what? 15 Litres of Petrol right? your driving a 8v aswell ...

Im getting 40-50miles on 8 Litres (£10) fuel, and 70-80miles on 13Litres (£15) and im driving a 16v and also give it a bit on straight roads etc. In town/traffic I coast the car a lot where I can.

Theirs definitely a culprit somewhere ... sounds like an easy fix though.

[Wayne]

well it smells lean (you can smell the petrol( like yesterday it was coldish and i started the car and there was steam but it smelt petroly, it does under 100miles on £20 vpower. im getting about under 25mpg its 8v agg gti i do give it abit, also a friend of mine has a snapon diag and it blatently came up showing lean

I would add that suggests not running lean but overfueling.

Has it had a temp sender replaced, if not could be a good place to start.

[DubSociety]

well it smells lean (you can smell the petrol( like yesterday it was coldish and i started the car and there was steam but it smelt petroly, it does under 100miles on £20 vpower. im getting about under 25mpg its 8v agg gti i do give it abit, also a friend of mine has a snapon diag and it blatently came up showing lean

I would add that suggests not running lean but overfueling.

Has it had a temp sender replaced, if not could be a good place to start.

+1

[dom]

100 miles is cr4p ... £20 VPower is basically what? 15 Litres of Petrol right? your driving a 8v aswell ...
Im getting 40-50miles on 8 Litres (£10) fuel, and 70-80miles on 13Litres (£15) and im driving a 16v and also give it a bit on straight roads etc. In town/traffic I coast the car a lot where I can.

Theirs definitely a culprit somewhere ... sounds like an easy fix though.

That's not that crap tbh, if your getting 100 miles per 15 litres that works out to be roughly 30mpg. Depending upon driving style and the type of driving that figure is very realistic.

[rubjonny]

where did you put the snapon tester? if up the tailpipe yeah it';ll be showing lean due to the cat. you need to use the sniffer pipe to the manifold. apologies if thats what you did

can rule out the lambda probe simply by unplugging it, if car runs much better you likely need a new one. other than that get it on vag-com to check for faults, and read the measuring blocks to see what values ecu is seeing for ecu temp, throttle position etc.

[Khare]

100 miles from 20 quid isn't too bad. It's about average. The stat deffo won't help as the car will be running cool, so the coolant temp sensor gives the ecu the signal to dump fuel in, which is how it works when the engine is cold. The stat is a 20 minute job, remove pas pump and belt and the stat housing is right there with the 2 10mm I think, screws looking right at you. Make sure you fit the stat the right way round. As I said, 20 minute job. Remember you have to refilled the entire cooling system after this job, and while the stat is out, I'd flush the complete system with a garden hose, as the only proper way is by removing the stat.

[sharki786]

where did you put the snapon tester? if up the tailpipe yeah it';ll be showing lean due to the cat. you need to use the sniffer pipe to the manifold. apologies if thats what you did

can rule out the lambda probe simply by unplugging it, if car runs much better you likely need a new one. other than that get it on vag-com to check for faults, and read the measuring blocks to see what values ecu is seeing for ecu temp, throttle position etc.

it was pluged in to the odb diagnostic port next to the ashtray, the lambda sensor has been replaced about 2yrs now. id know if the lamda sensor was fooked (the car would be bounching revs from 1000-2000 rpms

[Wayne]

To me it is overfueling not running lean, I would get the emissions checked before the cat by a proper exhaust gas tester.

[rubjonny]

they dont always fail like that though. what make of lambda is it?