Im getting a code for my MAF PO100and also the Fuel pump cericuit PO1641. If the MAF is dirty could it cause this and also mess up the fuel pump circuit? MAF still has the screen in it.

I am having an intermitent problem with a choppy idle and it will some times also have a mid rpm miss.

Any ideas.

Do the OBDII cars not like 160 t-stats, i put one of those in recently, could it be messing with things possibly?

 

P1641 is for fan contol relay 1 not fuel pump. If you are using a manual fan switch and don't have some resistors wired in, you may get the P1641 code.

Check power feed wire to your MAF.

 

Ok that makes more sense, guy at autozone told me it was fuel pump circuit or something. I was triple cheking everything and i noticed that donkey dong thing was a little loose, I tightened it up and we will see what happens. And yeah i have a fan switch so that explains the 1641 then. Thanks

How do i go about checking the power supple to the MAF? Ive got a multimeter if thats what i need.

Thanks for your help.

 

The pink wire is power to the MAF with the key ON.