Bad cackle at idle

Freightshaker · Dec 4, 2014

Not having a good day. Went and picked up truck from parking lot. It is cackling at idle when engine is unloaded. If it's idling in park, idling in gear or right at a shift. No CEL and no way to scan. No smoke and I dont notice a power loss.
-it's an 01 with just intake/exhaust.
Suggestions would be nice

psduser1 · Dec 4, 2014

Oil level? Cold? :shrug::shrug::shrug:
How long has it been sitting?

01PSD · Dec 4, 2014

Describe "cackling"

01PSD · Dec 4, 2014

IMO 7.3's are expert cacklers... LOL

Freightshaker · Dec 4, 2014

Was warm when the wife left it. Was cooled down when I picked it up. Sounded the same through cold to operating temp. Oil level is good, oil is about at half life (still golden) and fuel filter is new.

Freightshaker · Dec 4, 2014

Have video cant upload grr. It's not the normal rattling cackle of a 7.3, but a mighty roar or a clattering cackle that diminishes at the touch of the pedal only to re appear at a shift. I also wiggled harnesses at VC but no change.

psduser1 · Dec 4, 2014

Are you running a different brand of fuel from normal? Maybe a little water in the fuel?

Freightshaker · Dec 4, 2014

She got fuel at a different location this morning.

Freightshaker · Dec 5, 2014

Also unplugged icp while running and still idled rough. No oil present.

lincolnlocker · Dec 5, 2014

without any codes its a crapshoot... drain water/fuel separator and see if anything changes.. does it consistently even after up to operating temps?

live life full throttle

lincolnlocker · Dec 5, 2014

check voltage at idle too!

live life full throttle

Freightshaker · Dec 5, 2014

-I drained and changed filter with no change.
-Temp seems to have no noticeable effect

What do you mean on idle voltage?

lincolnlocker · Dec 5, 2014

Freightshaker said:
-I drained and changed filter with no change.
-Temp seems to have no noticeable effect

What do you mean on idle voltage?

when it is idling put a volt meter on the batteries and tell me what it reads..

live life full throttle

Freightshaker · Dec 5, 2014

Ahh I see

Freightshaker · Dec 5, 2014

lincolnlocker said:
when it is idling put a volt meter on the batteries and tell me what it reads..

live life full throttle

Eased up from 12.25 tto 14.5 after startup.

psduser1 · Dec 5, 2014

Any way to pull codes? Just guessing without some more info. My guess is a batch of poor fuel. Maybe try a shot of power service or something along those lines.

Freightshaker · Dec 5, 2014

psduser1 said:
Any way to pull codes? Just guessing without some more info. My guess is a batch of poor fuel. Maybe try a shot of power service or something along those lines.

Trying to track down something to pull codes.

mandkole · Dec 5, 2014

drain the fuel bowl into a glass jar. You could also pull the filter to see if there is any water in the bowl

No codes come from the fuel system, but this feels like sudden change in fuel supply.

lincolnlocker · Dec 5, 2014

Freightshaker said:
Eased up from 12.25 tto 14.5 after startup.

did it stay that high or settle around 14.2ish?

psduser1 said:
Any way to pull codes? Just guessing without some more info. My guess is a batch of poor fuel. Maybe try a shot of power service or something along those lines.

yep.. this too!! give her a high dose of white bottle power service.

live life full throttle

Freightshaker · Dec 5, 2014

lincolnlocker said:
did it stay that high or settle around 14.2ish?

yep.. this too!! give her a high dose of white bottle power service.

live life full throttle

Probably would have settled but I was checking in a hurry in the rain. Was just starting to close ebpv and ramp up the idle when I shut it back down. Was still running the same cold this morning. I'll give her a dose of PS when I'm back. A friend has the torque app will that pull codes I need or is that just CEL codes?