Hi,

I just installed a new IACV on my 2001 F150 (4.6L) and now it seems that it is blowing air back out of the intake tube ( I blew cigg. smoke over it to be sure it was pushing instead of pulling and it was. I am going to double check the gasket, but does anyone have any ideas? I found some posts online about it sounding like a cow...and they hit it on the nose. The owner before me drilled holes in the air filter box. I saw a post about a mustang blowing back out...and it was because it was on backwards...this cant be on backwards, it only fits one way because of the little plate thing under the windshield. I am going to drive it and see if it acts the fool. (while I constantly pray I don't blow up anything.)

Thanks.

 

is it running ok? you sure its not just the air being blown around from the fan? engine may have alot of blowby. just out of curiosity what was wrong with the old iac?

 

It seems to be running better than it was. Seems like it has a lot more power. I changed the old one because when I moved from D to R, or R to D it was rev up and down up and down until I gave it some gas. It only did once in a while, it hasn't done it so far.