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Wondering if anybody could help. My 1 litre Lupo loses power when the engine gets hot, had the car scanned and it came up with a fault with the knock sensor. Fitted a new knock sensor, scanned again and no faults came up, however the car still loses power when the engine gets hot. It runs fine cold but loses power whenever the engine starts to get a little warm. Its a 2000, with around 110k on the clock. Also the exhaust is blowing just before the back box, doubt this would be causing it but i have no idea Any suggestions would be awesome
So some may remember I had the issue with the car not starting atall and vagcom have me loads of codes and none helped point me in the direction that wires had become loose lol but one of the codes was about the O2 sensor. Now the wirings all fixed and car starts... Usually! If I leave her in the sun and the car heats up the engine won't fire in just turns over, and like last night I can literally be stuck for 3 hours waiting for it to cool down. Also happens of I get fuel for example and when I got to start it back up because its warm it won't start and have to wait for it to cool down again! I had a problem with the oil breather as it was overly clogged and smoking like a trooper, however that's been cleaned out and still having the issue, also the temp gauge is iffy but being a normal lupo fault I've over looked this, if I stop at lights or something ill notice the temp has dropped right to the bottom then ill start driving again and it'll come back up to the middle. I'm waiting to get it plugged in again but may be a few weeks, any ideas? I've been thinking 02 sensor but starting to doubt myself!
thank goodness for archives had problem with engine not starting when hot and engine appeared to be flooding judging by the smell when it did start, then either stalled straightaway or revs raced on their own. so changed plugs air filter etc and was just at the point of going to garage thinking must be fuel injection problem and thats going to be expensive! when found thread re coolant temperature sensor so got one on ebay for 7.50 nothing to lose right? it did the trick amazing!!! and now running much smoother. so would like to say a big thankyou to all members who take the time to post info cheers lindylou