help needed please

[lee1989]

hi guys new here and new to golfs, bought a 2001 2.0 a few weeks ago and had a few problems with it running, so connected it to d900 obd2 reader to read the codes and clear them to see which ones would come back up, but none did. car was running well for a bit now problems started again, so connected obd2 reader again but now it wont establish a connection with the car any ideas why? any help appreciated thanks

[Dalo Harkin]

what problems are you experiencing?

some code readers are hit and miss, literally, take it you had the ignition on 1 click?

[lee1989]

struggles to start in the morning, chucks a lot of smoke out of the exhaust, hesitates under acceleration think that's about it lol

it works on a mates car just not mine and yeah had it on 1 click cheers

[dom]

Do you have an after market head unit?

[lee1989]

yes mate I have an aftermarket head unit. ive heard of them causing problems because of the k line or something.

[dom]

Yeah, they can sometimes block communication. It'd be worth unplugging the head unit and scanning again.

[lee1989]

yea I tried that mate with no luck any ideas what else it could be? cheers

[jamie16v]

i notice youre in wales mate, where abouts?. i have vag-com, i could try giving it a scan with that?.

[lee1989]

in Rhymney mate just outside Merthyr cheers

[jamie16v]

a fair old trek then.. its up to you if you think the travel here is worth it?