Dumb Question Thread - No Flaming Allowed

[Advorsor]

Here is my dumb question.

(FYI - ‘05 M3 has AA headers and Hassan’s tune with a CSL box on MAP sensor)

I live in CT, having trouble passing emissions. We’re allowed to have 1 OBD monitor be “not ready”… currently I have 2 : the Secondary Air Pump (SAP) and Oxygen Sensors

I thought the tune would set the SAP as “not available” but keeps reading “not ready”, thus fails. Does it matter that the actual unit/hardware is still installed or am I missing something?

OR does anyone know of a SAP simulator I could buy which makes it read as “ready”?

Thanks

[bavarian3]

Does the dashboard lower ash tray cover spring open when pressed in, just like the sunglass holder cover above it? Just confirming mine is broken and they're not actually this way when working right. Mine has to be pressed at the top to rotate it open.

[Avedis]

duracellttu Cubieman jayjaya29

I don't know what the ones on your car look like, but based on the diagram, this may be it? Don't quote me on it. BMW seem to use this part on a ton of different models.

https://www.ecstuning.com/b-genuine-...h/07129904150/ (this one says its for 8mm and 9mm, Body nut used to attach underbody shields to the car.)

or

https://www.ecstuning.com/b-genuine-...t/07129904220/

If you search "BMW body nut" on Turner there are a ton of different options. Maybe pull the one from your car and visually compare what you see on screen?

[Nate047]

Thank you!

[tcp]

What's the easiest method to get off old foam and crud left from the old fabric? I know the surface needs to be clean in order for the adhesive to stick. Are there any specific things I need to do aside from make sure as much of the old foam is cleaned off as possible?

Is there a good comprehensive DIY for this job? There must be...

Handheld brass brushes (HF calls them "detail" brushes) and drill brushes will make scraping the old foam/glue off the headliner pretty easy. Got to be careful with the drill, though. If you use too much force the drill will want to spin out of your hand. Way too much force could damage your headliner, I guess.

As far as DIY's go, I got a lot out of "The Lucky Needle" on YouTube. They have a playlist with detailed steps on how to reupholster an e90, but the knowledge is mostly transferrable.

You really want to take your time everywhere, but especially the front. It's crucial to press every square mm of the fabric on to the headliner, otherwise you'll get a sag. Ask me how I know.

[Nate047]

I'm going to start working on some interior projects tomorrow, including re-upholstering my headliner. I have the fabric from veteran, and the spray adhesive they recommended me.

What's the easiest method to get off old foam and crud left from the old fabric? I know the surface needs to be clean in order for the adhesive to stick. Are there any specific things I need to do aside from make sure as much of the old foam is cleaned off as possible?

Is there a good comprehensive DIY for this job? There must be...

[PSUEng]

Great question Cubieman! I have the same question!

[duracellttu]

I'm looking for those c-clip nuts as well but I dont think they have their own part number. I'm probably just going to replace them with a generic version from the autoparts store.

I'm open to that solution as well. Be sure to report back if you find some that are compatible!

[jayjaya29]

I'm looking for those c-clip nuts as well but I dont think they have their own part number. I'm probably just going to replace them with a generic version from the autoparts store.

[duracellttu]

It's not the -767 part no. 4 all around?

Unfortunately not. That was one of the part numbers I ordered from referencing the same diagram and it wasn't correct.

[Cubieman]

There are two different sets of c-clip/body nuts on the front support plate (3 each), that connect the under carriage diaper and other trim. One set is for short 10mm head screws and their other for 8mm screws. Anybody have the part numbers for each of these nuts? Mines are all stripped out and I can't find the PN. The initial parts I bought from FCP are incorrect. TIA!

It's not the -767 part no. 4 all around?

[duracellttu]

Post cats have 72k on them but aren't aren't being read from.
I'll have to get it up in the air and check the O2 wires, but I seem to remember doing a pretty decent job making sure the O2 wiring was routed and fastened as to melt on the headers etc.
I suppose it's not out of the question a newer O2 sensor could be bad.

My bet is on the rear O2 sensors just being bad. 72k miles is well beyond their lifetime IMO. Even if that isn't the problem I would consider replacing them preventively.

[Cubieman]

How old are the post-cat O2 sensors? I would INPA the see if you have any errors with O2 sensors and if you are getting proper readings for pre and post cat.

I literally just had one die in me and gave me a SES light. My cost was for fuel adaptation and it was a pre-cat O2 sensor that died.

Post cats have 72k on them but aren't aren't being read from.
I'll have to get it up in the air and check the O2 wires, but I seem to remember doing a pretty decent job making sure the O2 wiring was routed and fastened as to melt on the headers etc.
I suppose it's not out of the question a newer O2 sensor could be bad.

[duracellttu]

Got my very first "service engine soon" light today after 5 years, it was a P0174 (bank 2 too lean). The code popped up on the interstate comming back from a track day.

I had a cheap OBD Bluetooth scanner/App and cleared the code while driving and it never came back driving over an hour home on the interstate and through town.

I have a CSL tune/MAP sensor, when the CSL airbox was put on 3 years back all new boots were used with OEM clamps, OEM CSL hoses were used, I even put new air rail orings in, new pre-cat O2 sensors were installed in the same time frame along with having my injectors sent out to RC for cleaning.

With the CSL tune in mind what else should I be checking for besides an air leak? I have a WB O2 sensor in bank 2, so I'll have to hook up testo and check that out sooner than later.

How old are the post-cat O2 sensors? I would INPA the see if you have any errors with O2 sensors and if you are getting proper readings for pre and post cat.

I literally just had one die in me and gave me a SES light. My cost was for fuel adaptation and it was a pre-cat O2 sensor that died.

[Cubieman]

Got my very first "service engine soon" light today after 5 years, it was a P0174 (bank 2 too lean). The code popped up on the interstate comming back from a track day.

I had a cheap OBD Bluetooth scanner/App and cleared the code while driving and it never came back driving over an hour home on the interstate and through town.

I have a CSL tune/MAP sensor, when the CSL airbox was put on 3 years back all new boots were used with OEM clamps, OEM CSL hoses were used, I even put new air rail orings in, new pre-cat O2 sensors were installed in the same time frame along with having my injectors sent out to RC for cleaning.

With the CSL tune in mind what else should I be checking for besides an air leak? I have a WB O2 sensor in bank 2, so I'll have to hook up testo and check that out sooner than later.