Cobra stalls when coming to as stop

[Fooj]

Weird issue Ive been battling since i got the car. It happens at weird time, usually its when i am at a drive through and i leave placing my order once i craw to the window the rpm will bounce and it dies. It will happen sometimes at lights too it doesn't like coming to a crawling stop ha.

I have cleaned the MAF sensor, replaced the IAC, reset the computer and replaced plugs. I am not sure what else i can look at or for?

 

[hotcobra03]

This is a common issue over the years.

Some were pcm related.

For me. I Drive a lot 422k now

Pcv valve made it change.

Few years later I was having other issues.

I replaced coils and after I noticed the stall issue was gone

Coils aren't cheap to just throw them in

Ford racing had a set of 8. Than for 200.

Fwiw the issue I had to change coils was car was getting hard to drive
Misfiring and jerking
Never got any codes for bad coil

Testing , I found a local member who had a set of coils to try first

 

[P49Y-CY]

what mods do you have? have you ever changed the intake?

 

[01yellercobra]

Is the car tuned? What throttlebody are you running?

 

[TerminatoRS]

Is the car tuned? I ask because mine used to do this on occasion. Usually it would be during decel from 40-45mph, throw the clutch while slowing to make a turn, and half way through the turn she'd puke. Perfect time to lose power steering. lol Ever since my latest tune, zero issues.

 

[Fooj]

So the car is tuned i have a KB 2.8 Mammoth and all the supporting mods for this blower. I posted in another thread about getting retuned so they can check it the idle table is set right. The car was tuned by street leathel back in 2012.

 

[01yellercobra]

Make sure you tell them about the issue. If you can datalog you can check IAC duty cycle. Friend of mine has a stalling issue. Turned out his throttle body needed a tweak. Made a quick adjustment and it's been fine since.

 

[SecondhandSnake]

Make sure you tell them about the issue. If you can datalog you can check IAC duty cycle. Friend of mine has a stalling issue. Turned out his throttle body needed a tweak. Made a quick adjustment and it's been fine since.

Also log idle air integrator. That will tell you if the computer has to learn/compensate from where it should be. It should be sitting close to zero. The throttle position should be set to give you zero at hot idle.