car running lean ?
#1
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if i punch it WOT, my check engine light comes on, (9 out of 10 times), so i took it to a friend and he said that the code said my car was running lean,just wanted to know what to do to fix the problem.
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lol if your maf is dirty you have other **** to worry about. check your vacuum lines to see if they are torn, wore or just not connected. then look for an exhaust leak infront of the o2 sensors. do u have a haynes manual? seems kinda noobish i know but some of the stuff in there is really helpful.
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hey bro I dont mean to hijack your thread ...... but i have the same problem ( DTC P0171 or P0174) ---- i've tried fuel additives (fuel system cleaner ) change out my fuel filter and my air filter ..... my maf looking clean running 93 oct ....... clean out my throttle ...... also tried the sea foam tune up.......shes running fine no change in performance too .... I have a 2002 a4 w/ 80000 miles ...... this may be a stupid question but were are the Vacuum lines .... is the hoses that run off the brake booster .... are there any more vacuum lines ..... any help or advice would be greatly appreciate