Ford Powerstroke Diesel Forum banner

99 misses only when raining

873 views 4 replies 4 participants last post by  Eric 
#1 ·
We just bought a 99 4x4 and it misses randomly and the cel comes on when it does miss, this only happens when its wet outside. No problems when its dry, but unfortunately that hasn't been much around arkansas this year.

I'm planning on checking the cps plug in and the air filter box.

Does anyone have more suggestions?

Thanks
frdpwr
 
#4 ·
there is a write up on this sight that suggests rough running may come from your idm getting wet inside. usually most common in e-series vans due to the placement of the idm. but it never hurts to check. locate your idm and remove it, and shake it around to see if you cant hear any sloshing around from water being in it. good luck
 
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top