Stoned

Roadworks in my area give for a nice backdrop.
Cheers.

Temp sensor - error solved

Still learning ...

Last time I fiddled with the ECU, I was very satisfied with the settings I found. My disappointment was even greater when the engine didn't start last Saturday. Although the engine was cold, the fan ran immediately. I connected the tablet only to read 80°C coolant temp. Out came the multimeter to check the sensor, but it was ok. What else could it be? *scratching head* ...

The Emerald ECU has some features to prevent engine damage. One is to monitor the coolant sensor and switch the fan on regardless of a short or a loose connector. Therefore you can set the above/below thresholds in the coolant sensor calibration menu. A loose connector gives 5.0V, a short will give 0.0V, the settings should then cover everything in between -30°C and +120°C (see graph). My settings were a touch too optimistic with 0.9 and 3.9. The default settings from Emerald are as above, but you still can enter user defined values.

With the adapted values, the error disappeared and the car started. Happy again!

Cheers.

Map switch & Lambda gauge

This little electronics project became bigger than planned, so here is the result: technical layout of gauge, map switch and its display LEDs, plus the housing cut to length.

Followed by assembly and function test for lean and rich...

...and normal on map 1 and map 2...

...and map 3 and rear view.

And a shot from in between.
Next: install it in the car!
Cheers.