Model: Sub. Leg. Station Wagon Brighton 1999 AWD
Motor: Boxer 2.2
kms: 207 000 (miles: 130 000)
my legacy has an intermittent problem when I accelerate. The motor will freeze at 1500-2000 rpm for a second or two before kicking up to 4-5000 rpm. After that, I can shift all 5 gears without to much problems if I stay over 3000 rpm. Sometimes, it can take as much as 4-5 secs at 1500rpm (something like 4-5 mph lol) before it kicks in. At a stop sign or at a red light, it really is annoying! Does it cold or hot, with low or full fuel tank, almost everytime I start from 0 mph or sometimes downshifting at ~3000rpm.
I also burn some oil, more or less half a pint each thousand mile since I bought the car last year, and I'm pretty sure I drink more gas since I have this problem. No check engine on. I had a P0440 3 weeks ago, figured out it was because of the fuel tank cap, deleted the code and it hasn't re-appeared since 300miles (~500kms)
Here are the things I've changed in the past year or tried:
Changed my two oxygen sensors and knock sensor(I had a check engine before that).
Changed my mass air flow thinking that it could be the source of my problem, disconnected the battery a couple minutes, reconnected, let motor run on idle to enable the mass air flow to reprogram, but still no change.
Changed the air filter and gas filter two weeks ago.
Added a can of cleaning additive after fueling to clean motor, injectors, exhaust and all, but it didn't do much.
Flywheel and clutch rebuilt last month, at least now the transmission works great
Anybody has a clue? Could it be a problem with the electronic injection? Fuel pump? Dirty something due to oil burning? Throttle position sensor? Damaged head gaskets?
Any kind of information will be very welcomed, I am pretty new to car repairing... so be very a ease to tell I me wrote something stupid! Sorry also for my medium english...!