picked up last november a beauitful and well looked after audi A4 avant 1.8T sport with an LPG convo [1999/2000]
Up until the last month its been running fine, apart from a dodgy blower, which has been replaced
noticed some erratic idling, lower MPG and was sometimes funny to start again after using it breifly, had to wait a few mins and then it would fir up ok
so i took to my mech and we saw one black wire into the oxygen sensor was cut and tested the oxygen sensor which was faulty and replaced it [£100]
after doing this it ran like a bag of nails, found another fault with cam sensor which was replaced [£80 Bosch] and car was running back to normal, MPG was back up, idling smoothly, no flat spots or bumpy acceleration, drove like when i first got it on both LPG and petrol
and went home happy chappie
that was until the next day when i fired it up, back to the nails again, rough in the front and spitting out the back!
so puzzled about this we took to local audi specialist to get a throttle body reset and diagnostic in which they suggested another new sensor [spark something, will find out 100% what it is] for 160 quid
this i will see tomorrow
the specialist reset the throttle body for me and was purring nicely [MPG was stiill down tho] until i stopped at my mums and then next time i fired up was back to the very frustating running issues
seems to run ok after the computer is plugged in and [if any] codes are cleared
so before i start throwing more money at this and apply for food vouchers to eat i wanted to ask if anyone had any issues with the ECU reseting or changing with LPG or any similar sounding problems??
i noticed that LPG is 110 RON would using prem fuel be better in relation? [98 RON]