nperkins

FML... Drove home last night things were great... Today after work I pulled the MS to add the tach signal to it and to wire in my bluetooth dongle... Here's a cross post of the info from CR...

So, I pulled the MS (DIYPNP) back out, and added a 1k resistor from 12v supply in the MS to pin 2I on the MS (As advised by ) ... Went to start the car, and its got a bad misfire... I can rev the car, but I can totally tell its missing on a cylinder. I cut that resistor out, and its still doing it. Did I screw something up? Is it possible its unrelated? The only other thing I did was solder some wires from the RS232 to the DB15 for my Bluetooth dongle... And I grabbed the ground for the RS232 from the ECU ground... Which should be fine... Yes?

EDIT: I pulled the plugs and they were all sooty black. I was hoping two would have been different and narrowed down this misfire...

If I rev the car up, it smokes because its clearing up unburnt fuel... Wideband is idling at 10-12:1... Which it wasn't doing yesterday... Nothing changed in my map..

EDIT2: that 12v to 2I 1k Resistor didn't make the tach work either..

nperkins

Misfire is fixed... Went to remove the MS so I could remove all the stuff I added for the bluetooth datalogger and realized I never plugged the map sensor line back in...

Tach still didn't work though...

nperkins

bump... any advice on what i'm screwing up with the tach? I'm going to attempt jumping IG- and GND in the diagnostics box with a 1k resistor after work today...

nperkins

I'm a dumbass yet again... That was a 100 ohm not 1k ohm i put on 12v and 2I... I just put a 1.5k (Its what I had) in IGN- and b+ and tach works like a charm. I'm just gonna leave that I think...