dvines

Hi All, I have a Mk4 legacy 2.5 (2005) automatic. I have had an irritating problem for ages that I get pinking after I have pulled away from rest, happens at about 1500-2000rpm when the autobox is in 2nd gear, or when at low speed, if I lift off the throttle and go back on the throttle gently I also get the pinking. I have renewed the MAF, had the car terracleaned (to remove any potential carbon), changed the knock sensor. i have also been through the engine bay and replaced several vacuum hoses, and put jubilee clips on all the visble ones (instea of the flimsy subaru spring clips), in cas ethere was a vacuum leak. Whern it first started doing it a main-dealer looked at, jhad the car several days, and could not find any issues (they claim). Occasionally there are times it feels slightly sluggish, and the autobox changes into a high gear very early, and doesn't change down so readily.... but it doesnt always do this. am wondering if it could be the oxygen sensor..... as this controls fuelling ?? I have Android torque Pro and attach a log if anyone could look it over - I'm not entirely sure what to exactly look for - a lag in the response ?? There are never any fault codes stored. Cheers to anyone who can give advice :-) To Banstead Woods 2014-Mar-31_17-30-03.zip

I bought hte car from a UK main dealer so I would be surprised if there are any mods to it. How easy are the injectors to get out - I can prob find an ultrasonic cleaner bath at a mates ( will the workshop cleaning type be Ok and what should I immerse them in ??) Plugs are new this month..

Hi Everyone, I'm in the UK with a 2.5 non-turbo 2005 car. I am having real problems with knocking/pinking in my car, especially when the weather is hot. Now the weather has cooled down a little it is better, but it is stil doing it at times. I am getting it when I lift off the throttle, then goback on the throttle at low speeds, eg intown. 2000rpm/20mph in2nd gear (its a 4-speed auto) sem to be the trigger points. I have teracleaned the car (removes carbon), replaced the knock sensor, changed the plugs, and cleaned the MAF sensor and beyond thatam at my wits end to know where to go next. Just bought the ANdroid Torque app and a bluetooth scanner but not really sure what I am looking for in the logs, or what to log. I used to be a research scientist so used to looking at this kinda stuff, but really need somehwere to get started and focus on. anyone help me with what to log (and how to log the knock sensor with this app - Ican't find the option)/ David