Exhaust

[zach mcdaniel]

Dtc p219a- improper fuel imbalance. What are y’all’s opinions?

 

[Ohio5pt7]

Dtc p219a- improper fuel imbalance. What are y’all’s opinions?

What????

Sent from my SAMSUNG-SM-G891A using Tapatalk all grammar errors brought you by fat fingers and auto correct.

 

[Brandon-w]

This is a bank one issue. Here could Be some causes.
Intake Manifold leak at a specific cylinder.

Fuel Injector problem.

Variable cam lift failure.

Camshaft/valvetrain problems.

Ignition system problems a specific cylinder.

Engine mechanical problems relating to cylinder combustion at a specific cylinder.

The cylinder imbalance detected requires that the Upstream O2 sensors are capable of operating at high frequencies, since an aged O2 sensors response capability at a higher frequency range can be degraded. Therefore, before this minitor come become active, the O2 sensor high frequency response monitor is performed to see if the sensor is even capable of detecting in imbalance.


Once active, the cylinder imbalance detection monitor matches up the upstream O2 sensor signal with the coressponding cylinder on the bank. Each cylinder is monitored and adjusments are made as needed for each cylinder to correct an air/fuel ratio imbalance. If an individual cylinder reaches a calibrated adaption threshold 15%), the diagnostic monitor will be considered failing.

Personally I'd look at spark plugs if they Havnt been done recently and maybe go from there.

 

[zach mcdaniel]

I’ve changed spark plugs.. still doing it. But do you know if the upstream& downstream sensor connectors are the same ?

 

[Brandon-w]

I'm Not sure if they are. Is it idling weird? After plugs the easiest cheapest thing next in my mind would be an intake leak. I've checked these with brake clean to see if idle goes up. It usually works well but if you have a coil pack problem or something along those lines it could catch fire if you use too much so easy on it if Ur gonna go that route.

 

[Brandon-w]

If you have access to a scanner scan it. And see if the O2 sensors are close both sides and see if they're responding properly when throttle is applied and released quickly.