Kinda sounds like it, except the ECU isn't in the dash. It's on the passenger side near the floor. Might be injectors or spark plugs or something under the hood that sounds like its coming from the dash.

I've never witnessed a ECU failure first hand, but it's supposed to smell bad. A little fishy.

Fuggin snap, I just was messing with the TB and isc fiav, quickest way to check to make sure I’m not doing that?

Tbh my idle is surging for 10 years I’m about to remove fiav and isc because they can short ecu. Fudge that.

I’d rather the car barely stay alive at idle then an embarrassing surge everytime I stop.

Ive got a local with an ecu I was gonna buy and pop in, guessing I shouldn’t do that until I delete isc/fiav because I could just short the new ecu?

As for the smell was hard to tell because I’m still getting used to smelling e85 , my gf kept claiming it smelt like elmers glue and I just kept saying it was the gas.

Also my goddam trunk is locked and the key don’t work, battery is in the trunk.

Do I NEED to disconnect battery before pulling ecu? Or reinstalling new one?

Fudge.

So I’ve pulled the isc connector, should that be good to not fry another ecu?

And I’m guessing this means my idle sure was caused by a bad isc, it tested fine and moved properly

Please someone correct me if I’m wrong.

Gonna send this ecu out to ecm link I guess and use a locals in the meantime

So I’m using my friends ecu that is known to be good and repaired from ecmlink

The problems seemed to go away for about an hour and then, I hit ground timing connector and then 20 mins later the symptoms start up again.

Could I be shorting ecu or causing issues by grounding timing connector box on ecu, I jeep doing it because it’s the only thing time stop my idle from surging.

Could something I did with the o2 sensor wiring be causing me to short the ecus? I used the actiry wiring harness

Will the car still start when the ecu is shorted? My intake and coolant temps are working so I’m guessing I’m not blowing sensor ground, I’ve unplugged the isc even tho I double checked the resistance and it reads good.

This time it’s different the car will start to studder at idle then if I touch throttle at all the rpms drop.

I picked up a fuel filter otw home gonna swap that in tomorrow, does this sound like fuel stuff or does it sound like wiring and ecu?

Fudge.

I’ve got logs if anyone wants to see
The don’t look different when the issue starts I think but I could be missing something cause I suck.

Cheers

So i suck, someone how I shorted the o2 wiring. I don’t understand how. But forsure, I understand I apparently hooked up a heater wire or a ground to sensor ground?

So i clipped the wires further back on my harness to my o2 sensor and the problem has not returned..

I also unplugged my isc because I thought that fried my ecu originally, and I’m using a locals spare ecu still.

My isc tests fine resistance wise, and moves.

What’s your opinion on completely blocking off the isc and fiav, I already have the egr blocked off. I’m just trying to eliminate all sources of programmed vacuum leaks.

I feel like it will be easier to sort with just the biss screw in place.

Please correct me if I’m wrong.

I’m also wondering if this surge is in my wiring because the isc is still logging movement when unplugged. Does that mean it’s reading something else?

Also I think I just found all of my sensor grounds being ground to chassis, or am I supposed to have a bunch of wires from harness going directly to chassis? ( my sensors could be reading static so the idle is surging? )

PS sorry for the absolute books of comments, and if I’m annoying the spit out of everyone.