Get new purge valve.
Bmw e46 evap system diagram.
See page 2 of the link.
Some of the most common check engine fault codes for bmws from 1996 through the mid 2000s involve the secondary air injection system.
This pumps air through a restricter orifice 1 0 or 0 5 mm which causes the electric motor to draw a specific amperage value.
733i e23 fuel delivery evaporative control schematic 733i e23 idle speed control schematics 733i e23 start circuit diagram open.
This value is equivalent to the size of the restricter.
Usa link for purge control valve http amzn to 2xm1taq canadian link for purge control valve https amzn to 2kysja6 in this video i will show you how to re.
Also the car will not even attempt to run an evaluation of the evap system if you have more than 3 4 or less than 1 4 tank of gas or if it s too hot or too cold out.
You need to complete a drive cycle for the car to evaluate the evap system and mark it ready.
P0442 bmw meaning the evaporative system monitoring permits the detection of leaks in the evaporative system with a diameter of 0 02 inches and up.
I do not have the evap system and fuel tank venting fully committed to memory but most systems have both a purge and vent valve but i believe most of the e46 have the ldp leak detection pump and evap solenoid under the intake.
When the dme activates the dm tl for leak testing it first activates only the pump motor.
Come join the discussion about m performance turbo kits engine swaps builds modifications classifieds troubleshooting maintenance and more.
Does anyone have a diagram of the evap system.
Http amzn to 2ipwemn repair talk starts at 1 12 here s the diy guide to replacing the purge valve i.
Emissions equipment for bmw 3 series e46 1999 2006.
Evaporative emissions system vacuum system valves.
Bmw 3 e46 wiring diagrams bmw 3 e46 2 5 l engine control system wiring diagram bmw 3 e46 cooling fan schematics bmw 3 e46 abs circuit diagram.
Bmw z3 e36 e37.
By means of a diagnostic module tank leakage dmtl an electrically actuated pump located at the atmospheric connection of the evaporative canister a pressure test of the evaporative system is.
There may be a few variations on the e46 evap system i do not recall all the different options.