Monitors INC

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It was the disa valve that I didn’t want to mess with, but after watching the video it looks like an electrical connection and a couple of bolts.

If the flap is loose (what is a disa valve anyway?) is it something I can tighten or will I need to replace it? If it needs replacement I’d like to get everything I need before I get back in there.

The disa valve adjusts the length of the inlet tract to optimise torque throughout the rev range.
If the pivot pins wear they can eventually break and the flap heads off to the inlet valves.
You can buy uprated modification kits or a complete new assembly.
The 2.2/2.5 is smaller than the 3.0

[MX7]

Finally got around to this today. Overall it was pretty straight forward. It was a bit simpler on the 2005 Z4 than in the 3-series video I linked. One item of note is that the disa valve screws are T40 (they are T30 in the video).

Started the car and I still have monitors inc. I’m back to trying the drive cycle tonight or tomorrow and hopefully they will set.

Thanks to everyone for their help!

[MX7]

One last question… does anyone know if I need to clear the two error codes (2882 & 2883) or will they clear themselves? I can easily clear them, but that will just put me further behind trying ti ready the car for inspection.

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One last question… does anyone know if I need to clear the two error codes (2882 & 2883) or will they clear themselves? I can easily clear them, but that will just put me further behind trying ti ready the car for inspection.

You need to clear them

[MX7]

Cleared the codes… did the drive cycle. Codes did not reappear but I still have two monitors inc. these are different monitors. They are:
- evap system
- sec air system

I plan to repeat the drive cycle tomorrow morning.

While performing the drive cycle, I got a red tire pressure light on the dash. At home I broke out the code reader and I have a 5E20 Pressure sensor 1 error. No other lights on the dash or errors from the reader. Is this a sensor issue? Which one? Easy to change? I should note that I changed the brake pressure sensor #1 less than 200 miles ago. Haven’t really driven the car since (other than drive cycles to try and pass inspection).

[enuff_zed]

Cleared the codes… did the drive cycle. Codes did not reappear but I still have two monitors inc. these are different monitors. They are:
- evap system
- sec air system

I plan to repeat the drive cycle tomorrow morning.

While performing the drive cycle, I got a red tire pressure light on the dash. At home I broke out the code reader and I have a 5E20 Pressure sensor 1 error. No other lights on the dash or errors from the reader. Is this a sensor issue? Which one? Easy to change? I should note that I changed the brake pressure sensor #1 less than 200 miles ago. Haven’t really driven the car since (other than drive cycles to try and pass inspection).

OK, stoopid question time................... are the tyre pressures actually ok? Red ligght usually means it's detected one low.

[MX7]

Oh, sorry, not a stupid question. First thing I checked. Three tires at 35psi, one at 32psi that I topped up to 35. Took the car for a quick spin around the block - code still present. Wanted to avoid clearing the code as that will set me back with trying to get the monitors to set. The fact that it was only 3psi low led me to believe this wasn’t the issue. Also, the fact that it went immediately red (I thought it would be yellow/orange when low, then red when VERY low).

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No yellow means a sensing issue.
Red is low pressure.
Once re inflated, turn ignition to position 2 but don’t start engine. Hold the tyre reset button in front of the ashtray until the tyre light on the dash turns yellow, then start the engine and drive a couple of miles.
The system will then recalibrate itself

[MX7]

Okay, I feel like an idiot. Don’t know why I forgot about the tire pressure reset button. I did as suggested and the light way out by the time I backed out of the driveway. The only thing I can say in my defense is that I have 8 cars and it’s hard to keep track of how everything works!


Any advice/input on the 5E20 code?

[enuff_zed]

Okay, I feel like an idiot. Don’t know why I forgot about the tire pressure reset button. I did as suggested and the light way out by the time I backed out of the driveway. The only thing I can say in my defense is that I have 8 cars and it’s hard to keep track of how everything works!


Any advice/input on the 5E20 code?

Can’t help with that code I’m afraid. Sorry