i purchased my first wrx 9 months ago.
i got a 2001 bugeye sedan 5spd man. it is completely stock and has 125*** km on the clock. (122***) when i got it.
the previous owner had the car in storage for 18months as he was overseas and his mate took it for him to sell.
from the second week i have owned this car it has given me grief. when the car is just starting to warm up it runs perfect.
the main problem i have had is the car jerks and pops when i accelerate into boost once that car has warmed up. if i slowly accelerate it feels like a
rough (like a slightly bumpy road) and gradually gains speed until it jerks. it jerks and coughs in all gears and starts at 2800rpm and cant really get past
the car has never had the CEL come on at all. this car has seen several mechanics including a subaru specialist and a subaru dealer.
slowly, one by one, i started replacing parts. i started with a service, and part replacement
*replaced and correctly gapped the plugs (nkg platinum)
*replaced the air filter which was orange and filthy with a genuine wrx filter
*cleaned the MAF sensor
*replaced the fuel filter (this is where it got interesting) the fuel that came out of the 'out' side was brown ish.
the 'in' side prior to the filter was dark brown when i tipped it out. so at this point i didnt put the new filter in just yet.
*opened the fuel pump cover and removed the fuel pump. i was sure this was the issue. it was rusty inside and a thick sludge covered
the fuel pump and the filter.
*ihad the fuel tank emptied and scrubbed and flushed as much of it out as possible.
*replaced with a bosch 265lph fuel pump put in some fuel and primed the lines without the filter and pushed any junk in the fuel lines
out into a clear cup.
*put the new filter on, reset the ecu and started the car.
it seem to run perfect for about 5kms and was still doing it once it was really heated up.
a mechanic and 90% of the issues i found on the next like this pointed to MAF, the coils or boost/vac leak.
*replaced and fixed all.
didnt fix it.
subaru specialist said it could be a faulty front 02 sensor since he though it maybe fuel related
*replaced that and it also didnt fix the problem.
finally yesterday i took it to a subaru dealer service centre. the guy who worked on it even owned a wrx exactly the same and after 5 hours in the shop
he couldnt find an issue with it.
i have spent thousands on finding and resolving an issue and have had enough.
i am hoping someone on here may have had a similar issue and might have solved it with something different.
a few things i though it may be just have not had enough time to spare to check is;
*fuel pressure regulator
*boost solenoid (since the car is stock my obdii sensor is also telling me the car is hitting 16psi when it boosts well and engine is cooler)
i also have had the brant alarm system in the car bypassed, could anyone tell me if they have had this done and the key on their dash continues to flash a minute after the car is started and if this is normal?
any thoughts and/or ideas please feel free to pass them on.