Hello people i am looking for a little advice. It i will start with a little background info. I recently bought a 2000 Z3 (2.0 6 Cylinder) Prelockdown as a project for me to complete while the country was on hold. The car was off the road for 4 years prior to purchase, i thought it a good opportunity to learn some new skills and make it into a car someone can enjoy. I am not trying to make a profit i bought it as a learning opportunity however i would prefer not to make a loss. The Z3 has been full stripped inside and deep cleaned then put back together and the exterior has all been rust proofed and undercoated.
Now onto my problem, When i bought it the engine was not running. The first thing i set about was a full service changing the Oil, Filters (Oil and Fuel) Spark Plugs along with a brand new battery. The engine still would not start which i eventually diagnosed to a broken fuel pump, after changing this the engine started for the first time in 4 years (Very proud moment). Upon revving the car however it seems to have a slight issue, the revs will build to 3000Rpm at which point the EML light comes on, the engine splutters and the revs fall. The engine does not die completely, if the throttle is held down the engine will surge up to 3000 (ish) and fall repeatedly. I have plugged in a cheap diagnostics i got off Amazon and it says Idle Air Control Sytem (Code: p0505), i have tried replacing the ICV with one i know to be working and this did not fix it, i have also replaced the intake hose and boot along with the MAF sensor.
Any ideas are appreciated i have done a lot of research and cant seem to find the answer, i am hoping it is something i can fix myself, however if this post isnt successful in finding an answer i will take it into a garage,
Thanks everyone,
Kieran
Now onto my problem, When i bought it the engine was not running. The first thing i set about was a full service changing the Oil, Filters (Oil and Fuel) Spark Plugs along with a brand new battery. The engine still would not start which i eventually diagnosed to a broken fuel pump, after changing this the engine started for the first time in 4 years (Very proud moment). Upon revving the car however it seems to have a slight issue, the revs will build to 3000Rpm at which point the EML light comes on, the engine splutters and the revs fall. The engine does not die completely, if the throttle is held down the engine will surge up to 3000 (ish) and fall repeatedly. I have plugged in a cheap diagnostics i got off Amazon and it says Idle Air Control Sytem (Code: p0505), i have tried replacing the ICV with one i know to be working and this did not fix it, i have also replaced the intake hose and boot along with the MAF sensor.
Any ideas are appreciated i have done a lot of research and cant seem to find the answer, i am hoping it is something i can fix myself, however if this post isnt successful in finding an answer i will take it into a garage,
Thanks everyone,
Kieran
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