so i have a case of the hesitation blues. the mustang runs like a champ when its cold but once it warms up to operating temp i get hesitation when im cruising. it doesn't hesitate under acceleration, no idling issues, just when its cruising. it finally decided to throw a check engine light too. i took it to advance auto and the obd2 code reader came back with P0156.. which means o2 sensor bank 2 sensor 2. so after doing some digging around on " them interwebs" i see that it might not even be an issue with the sensor but a whole slew of other things.

the other thing i have noticed is a very fowl smell coming from the exhaust. its not blowing smoke of any kind but the smell is pretty bad. like sulfur, rotten eggs, mixed with some bad indian food.

now ive been known to just throw parts at a car and it be the simplest of things and this is a bad habit im trying to break. any ideas guys?

 

Dead cat in your exhaust maybe.

(either variety would stink)

 

what year mustang? Was it an o2 heater circuit code? If so it's definitly the sensor.If not the sensor might be fine but reading something else thats wrong like a bad catalytic converter. Bank 2 sensor 2 is the sensor after the cat. You might have a clogged converter

 

its a 98gt, the code did say heated o2 sensor malfunction but im wondering if it did that because the Cat is bad. The exhaust smell is what really makes me think its a bad cat.

 

yeah, the sensor could definitly be a symptom. Is there more exhaust pressure from one side?That would point to a clogged cat too. I m manage an exhaust shop.If you need a cat give me a call.977-7703. You wont get one cheaper anywhere else.We also have magnaflow cats in stock

 

Who needs cats lol.

 

if anything ill just get a x pipe and a rear o2 eliminator kit. i miss the days of no cats and carbs.