Some told me to make a compression test. ( that's good idea )
Some told me may be your TPS?
Yesterday was trying accelerating from 0 to 100k, it take 11.2-11.6Sec. the is so slow for 2.5L -24valve vanos. Suppose to be better than that. I cleand the air filter which was much dusty. but no thing changed.
let me explain again what happining with me. Read carefully and tell me what do you think the problem.
When I push the pedal to accelerate from 0 the RPM going slow until 3800-4000 then open.
Sometims have vibration while warming up, but it vibrates for a while then gone.
Sometime the trnsmission slip.
Exhaust prussure is very low and has a bad smill like misfire. you feel there is a very very lettle exhaust air comming out when you put your hand infront the tips ( exhaust not clogged ). This let me scratch my head. Where is the emessins of 2.5L engine.Isnt burning any thing.
I have this problem since I bought this car before 10 monthes.
the car got checked ( diagnosed )at bmw maintenace, with no sensors faults!!?
I did tune up and change every thing ( sprk plugs, filters, oils) = nothing changed.got exhaust changed too.
In general, the car Idling steady,No engine check light. these days the RPM rised up to 700, specially after changing the exhaust I note that. but performance is still not good.
I did take a look in engine to see if there is any thing wrong but cant find.
So if the RPM is normal, and diagnostic says no faults, why my car is leaking power?!!
Last edited by MAXI; 09-02-2008 at 04:34 AM.