Miller MAF running issues

Post Wed Mar 26, 2014 9:36 pm

Hi

I recently got a 3”a MAF with 173 chip for a e30 BMW with a M20B27 fitted

I followed the instructions to the letter !!

12v indicated between pin 3 and 4 of the MAF plug - i did the splice the grey/white to the red/blue cable. So this is all correct.

I measured between pin 2 and 4 (ign ON and Engine OFF) and should have had 1V according to the troubleshooting guide. I recorded 9.6V here.

With the engine idling the voltage reading went up to nearly 11V

Interestingly apart from a little ”ablip”a the car ran exactly the same with the MAF connected or diss-connected

It idles high and is very eratic on part throttle. Running very very rich.

Please can you help ?

Thanks v much.

Post Wed Mar 26, 2014 10:45 pm

well, i spoke to the Millar guy, Brody and it appears the 5v regulator in the sensor is duff so they will repair/replace as required if i send it back.

So back to Canada it goes.....

I have to say their customer service is amazing, wrote back to me straight away.

Top guys !!!

Post Wed Mar 26, 2014 11:19 pm

jimbom30cab wrote:
I have to say their customer service is amazing, wrote back to me straight away.

Shame the same can't be said about their quality control.

Ben

Post Wed Mar 26, 2014 11:26 pm

yer it's odd Ben as the guy remembers bench testing my set up also

oh well, long as it gets sorted i'm happy

Post Thu Mar 27, 2014 8:31 pm

The guys at Miller are very good - have faith and they will sort you out. I had a Miller MAF on my M20 and it worked very well..