Skezza Posted December 12, 2023 Report Share Posted December 12, 2023 Any noticeable vibrations? Does it sound rough? Quote Link to comment Share on other sites More sharing options...
wkpaul Posted December 12, 2023 Author Report Share Posted December 12, 2023 No it drives normal, the only symptom it has is a stutter but only every one and again , I had this before and it got progressively worse until I got the misfire, I took it today for a smoke test for leaks and the only leak was a very faint smoke leak from the overflow from the EGR .not sure if thIs is normal as it’s an overflow? then quite bizarre, I was driving away from the garage and it cut out and started running like a bag of sh#@ went back to the garage stuck it on the diagnostics and it said throttle body problem. we found an Allen key socket in the throttle body , looks like someone had stuffed it in the pipe from the crankcase vent that’s inside the air filter , never noticed it had been cut short and you could see something had stretched the pipe. Quote Link to comment Share on other sites More sharing options...
wkpaul Posted December 14, 2023 Author Report Share Posted December 14, 2023 So today the Lupo was idling rough and cut out a couple of times at traffic lights . if it running lean would chip tuning help ? Quote Link to comment Share on other sites More sharing options...
mk2 Posted December 14, 2023 Report Share Posted December 14, 2023 No. There's a fault somewhere... Amazed that you retrieved a hex driver from INSIDE the throttle body! Smoke from the EGR vent is just where the air is allowed in to fight against the engine vacuum. It's used as an equaliser. One side of the EGR diaphragm is vacuum, the other atmospheric pressure. A bit like how a brake booster works. Quote Link to comment Share on other sites More sharing options...
wkpaul Posted December 15, 2023 Author Report Share Posted December 15, 2023 Lucky it was too big to drop inside ,or it was party over!! So today the Lupo was idling rough and cut out a couple of times at traffic lights . if it running lean would chip tuning help ? Quote Link to comment Share on other sites More sharing options...
wkpaul Posted December 19, 2023 Author Report Share Posted December 19, 2023 So todays challenge , I have a new fault code :P0138 o2 sensor circuit high voltage ,bank 1 sensor 2 joy of joys Quote Link to comment Share on other sites More sharing options...
wkpaul Posted December 19, 2023 Author Report Share Posted December 19, 2023 So the question is :is it safe to drive, I’m planning to take it to the vw garage which is 20km away ? go direct tongue source 😏 Quote Link to comment Share on other sites More sharing options...
wkpaul Posted December 19, 2023 Author Report Share Posted December 19, 2023 Stupid auto correct, to the source Quote Link to comment Share on other sites More sharing options...
mk2 Posted December 19, 2023 Report Share Posted December 19, 2023 Yeah sounds like you still have an electrical fault. Not the sensor. Ok to drive as much as you like. The ECU will simply follow an "open loop" map. So might use a little more (or less!) fuel. Same as it does on a cold engine when the O2 sensor hasn't warmed up yet. Quote Link to comment Share on other sites More sharing options...
wkpaul Posted December 21, 2023 Author Report Share Posted December 21, 2023 So my Lupo adventure has been a blast but have given up , traded it in , but thanks a million for all the advice and help Quote Link to comment Share on other sites More sharing options...
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