2022 Stinger gt2 awd what would cause rpm's to drop to 300-400 coming to stop then going back to normal ?

[mikegt2]

Have 2022 stinger gt2 awd sometimes when come to a stop the rpm will drop down to 300-400 few split second then go back up to normal what could cause this other then vacuum leak ?

 

[Snicklefritz]

Sounds like it could be your idle stop go feature starting to shut the engine off, then "changing its mind" because conditions are borderline not met. just a wild guess.

 

[stoopid]

Sounds like it could be your idle stop go feature starting to shut the engine off, then "changing its mind" because conditions are borderline not met. just a wild guess.

Along similar lines, if you 'roll' or like to roll around at a stop light (some like to creep their vehicle forward a few inches out of some weird thing/psychosis instead of just sitting there fully stopped) this would confuse the stop/start system as well.

If normal full stop, then yes something engine related is awry. I assume your engine air filter / intake is clean?

 

[mikegt2]

Sounds like it could be your idle stop go feature starting to shut the engine off, then "changing its mind" because conditions are borderline not met. just a wild guess.

I always turn it off soon as i get in the car.

 

[mikegt2]

Along similar lines, if you 'roll' or like to roll around at a stop light (some like to creep their vehicle forward a few inches out of some weird thing/psychosis instead of just sitting there fully stopped) this would confuse the stop/start system as well.

If normal full stop, then yes something engine related is awry. I assume your engine air filter / intake is clean?

I turn it off soon as i get in the car, yes cleaned my filters recently have burger motorsports cai.

 

[stoopid]

I turn it off soon as i get in the car.

Me too.

Any chance the kai uses oil on the filter media? Could be a fouled MAF sensor? The tendency is for owners to over oil the filter. I use K&N drop ins, for many years, and try to be very conservative when oiling especially the downstream side of the filter facing the engine.

 

[mikegt2]

I cleaned the maf sensor couple different times has not helped talking to Kia next Tuesday guessing it is one of the sensors bad.

 

[oddball]

These cars don't have a MAF. There's 2 MAP sensors, but those are basic pressure sensors and don't need cleaning. And they shouldn't be cleaned with anything.
ISG is pretty conservative, so I doubt that's it.
It could just be the normal action of the car, especially if the A/C compressor is kicking on.

 

[stoopid]

These cars don't have a MAF. There's 2 MAP sensors, but those are basic pressure sensors and don't need cleaning. And they shouldn't be cleaned with anything.
ISG is pretty conservative, so I doubt that's it.
It could just be the normal action of the car, especially if the A/C compressor is kicking on.

Sorry for misspeaking, I assumed all cars used a MAF sensor but this thread explains why the Stinger does not. 3.3TT - MAF sensor and Fuel Calculation Method

The good news is that it sounds more difficult to affect the MAP sensor's function by over oiling the air filter. Next time I'm under the hood I'm going to get my eyes on where that is in the intake path, I thought it was midway like on most vehicles but sounds like it's closer to the engine [at the manifold?].

 

[oddball]

There are two. One is where the intake pipe curves from vertical to horizontal heading into the engine - that's the "TMAP" - Turbo MAP - sensor. The other is right behind the throttle body. 4 pin connectors.