anyone else have a random miss

[Shootingstar]

I have a 08 F350 that just randomly misses. nothing shows on dash daq.
anyone else had this issue mine has always done it but its seems to be doing it more. it does't seem to matter what tune its on or if its is stock it still does it about every 15 to 30 sec. it just stumbles like one cylinder didn't fire.
any ideas on where to look?

 

[BFT]

Do you have your A/C or defrost on?

 

[charlie-2]

with the ac on it misses and my truck with 137kmiles and had bad no 8 injector stuck open misses alot LOL

 

[Shootingstar]

Yea the ac is almost always on I leave it on auto most the time.
Are ya thinking the clutch cycling is what I'm feeling?
I'll ck that!

 

[Desertdweller]

I have the exact miss at idle. Dont know what it is. My ac is off.

 

[O2ShootTheJ]

KEM?

 

[Dzchey21]

Not sure really why it would be the tune

Honestly if it's a misfire the computer will catch it.


What are you checking codes with?

 

[blk350on20s]

Both 02 and I have KEM and we both have something that resembles a miss at idle.

 

[WoodBoy]

I think they are feeling the compressor cycling Dustin when idling. After the deletes i could feel mine cycling pretty good but when stock i cant feel it. Idk why. Just turn off the A/C and see if what yall are considering to be a miss go away

 

[Desertdweller]

Its not the A/C on mine but to compare it does resemble the that same noise but add a miss in the exhaust note.

 

[baddkarmaracing]

Mine does it too. And I'm still on canned sct tunes

 

[superstroked]

Mine does it to but, like others have said, I think it is the A/C compressor kicking on and off.

 

[Shootingstar]

Well after some checking, mine is the ac cycling. I talked to the tech at the shop and he said that some of it is do it due to the way the ac hoses are routed. It slugs the compressor, add cool temps and thicker oil to the mix and then you really feel it

 

[Super08Duty]

i have the same miss, i know several 6.4s with it also.