Rough(er) idle? - Ford Forums

04Navigator04 · 08-15-2009, 09:42

I've noticed that when stopped at a light (holding the brake) but even when in park there's SLIGHT vibration throughout the vehicle (2004 Navigator), RPMs are steady but you can feel the vibrations a bit and if you focus on something outside the vehicle you can notice that it's vibrating.

Any ideas?

**rtg143** · 08-15-2009, 10:07

Sounds like an engine miss. Take it to Autozone and see if they can get a code.

04Navigator04 · 08-15-2009, 11:19

Quote:

Originally Posted by rtg143

Sounds like an engine miss. Take it to Autozone and see if they can get a code.

That wouldn't be too bad (pretty easy fix) but there are no codes at all..is it possible that there's an issue like that without CEL/codes popping up?

**rtg143** · 08-15-2009, 12:37

That can happen. If it has a miss for quite awhile it will set a code. sometimes there are spark plug boots that let the spark jump to ground causing a miss and no codes will be set for awhile. If you can feel it when it's idling, disonnect one fuel injector connection at a time until you find the one that doesn't change the condition and that's where to look further. Plug, coil pack etc.