Summary: My MAF signal wire voltage is reading 12.4v at idle... it’s suppose to be around .5v — she’s running super rich AFR:10.0
—Alright I am running an ApexiNeo (KA24det) on a stock manual tran ECU. It allows me too add or subtract fuel per-certain RPM.
I got the car 5 months ago and I haven’t driven it yet. When I got the car she was sitting for a solid 6 months (no drive/ no start)
I basically fixed everything and got the car running, but but ever since I got the car it’s been running stupid rich, and at first I thought it was The fuel map that I had on the apexi neo. But it wasn’t
When I start the car, she’ll go from 14.7 then drop to 10.0 on the AFR gauge. I tried making a tune to where I’m taking out Max fuel and still... rich asf
I then went and checked my MAF and was surprised on what I found and also happy cause it all made since.
1. So at idle, I unplugged the maf and nothing happened. I plugged it back in and nothing happened
2. I then went to go check the voltage on my maf harness, and realized my signal wire was reading off 12.4V at idle and around 9-10V The ignition on
3. The white wire, Which supposedly is supposed to be the power wire, I was reading off .47-50V
So somehow my signal wire is reading with my power wire is supposed to read and vice versa. So now it makes sense why I’m so rich because the ECU thinks there’s so much air coming through
- White: Power
- Black: Ground
- Black/White: signal
How should I got about this, any advice helps...thanks!