gawath

I am having a smoking problem at startup and when the vehicle is warmed up. I suspect that it may be due to bad MAF wiring. I've already swapped the MAF over to a known good one and it's doing the same thing. I measured the voltage at the MAF pigtails with the ignition in the ON position (engine not on). My readings are below. Can any members confirm with what I got?


I believe the red wire should read 12v. It looks low to me. Is the 11.12v adequate?


Is the .241v for the yellow wire correct for being at "ignition start". I believe it should be 5v, but is the 5v reading when the engine is turned on?


Checked the 20A Engine Sensor fuse and it looks fine.



I also noticed on my cluster that the voltage is reading low. This may be a grounding issue.

khaotic

iTrader: (2)

Hope this helps pink is 12v yellow is 5v

edcmat-l1

iTrader: (10)

Check it with your ground probe on the battery negative. If it's got a bad ground, your voltage on both wires will be good with the negative probe on the battery neg.

eseibel67

iTrader: (10)

Your ignition voltage on the pink wire is low, but o.k (min 11V). The yellow one should be at least 4.5V.

gawath

When the engine is on?