rough idle when weather is wet?

[1988mustangtvert]

When ever it is raining or misty, and i attempt to start truck it idles rough and stalls...any suggestions before i drop it off at dealer?

[2kNavigator]

I have a 2000 navigator that is having the same problem. Anyone figure this one out?

Originally Posted by 1988mustangtvert

When ever it is raining or misty, and i attempt to start truck it idles rough and stalls...any suggestions before i drop it off at dealer?

[mrgtp01]

i got that same problem and throw code #p1507--i think--checked it at the dealer and was told air idle controller module was going...and it only does that when its humidty...

[peppermrj]

Get out a squirt bottle and mist away. If it is electrical(wires, boots, coil) it might be more obvious at night. The IAC valve can be removed and cleaned along with the port it resides in.