BMW Z3 How To: Troubleshooting and Fixing Error Codes P0491 & P0492

I go over all the possible issues these trouble codes could be for a BMW Z3. Methods on how to test parts and what to replace. The parts below
are for a 2001 Z3 with a 2.5i engine. Some parts are compatible with multiple Z3 versions so check first. I'm not sponsored by any car parts shops listed below.
Parts you might need:
Pierburg Vacuum Control Valve www.autohausaz.com/pn/1174174...
Vacuum Hose/Line; 3.5mm ID x 2mm wall thickness
www.autohausaz.com/pn/5173147...
Secondary Air Pump Control Valve
www.autohausaz.com/pn/1172754...
Air Pump Check Valve
www.autohausaz.com/pn/1161131...
Secondary Air Pump (Varies by year and engine size. Also many sites no longer sell this part so the price has increased)
www.bmwpartsdeal.com/parts/bm...

[@CoolcatsAlley]

To skip the troubleshooting segment and jump to the vacuum line repair go to 13:00 on the video.

[@adrianorozco5182]

I’m about to follow your steps, thanks for the great explanation

[@CoolcatsAlley]

Good luck 👍🏻

[@seth4322]

Awesome video - was extremely helpful!!!

[@CoolcatsAlley]

Thanks for watching and I'm glad it helped you out.

[@ramsn1971]

you are awesome! thank you so much!

[@CoolcatsAlley]

I'm glad you are enjoying my videos. Thanks for your support!

[@rugerar5567]

I think you meant to say oil filler cap not a gas cap on a Cover you took off

[@CoolcatsAlley]

Yeah I realized after editing I had a brain fart and said the wrong thing. Good catch!

[@SPritch724]

Great vid! I’m learning! Where’d ya get your strut brace? 🤩🤩🙌🏼🙌🏼👏🏼👏🏼👍☺️ Ima need to get one like that! Thx!

[@CoolcatsAlley]

My strut brace is made by Strong Strut based out of Texas. Sadly, I think they might be out of business since all their products are listed as sold out.

[@SPritch724]

@@CoolcatsAlley That’s ok. I ordered a Racing Dynamics one earlier today. 🙌🏼👏🏼