Question about Dodge Grand Caravan
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Posted on Jan 02, 2017
Bank one is toward the front of the vehicle. Sounds like the heated oxygen sensors have gone bad. The Oxygen Sensors are located in the exhaust pipe and require a special socket to remove and replace.
Posted on Jan 16, 2009
I think you will find the aftermarket Cat Conv. is the source of your problem, but without hooking up to the factory test equipment at my disposal at my Ford dealer this at best and educated guess based on 20 years of emission related work, I am a Ford certified master electronics technician
Posted on Jan 30, 2009
SOURCE: 2003 VW Golf - O2 Sensor?
Honestly it is not very expensive to replace, but it is not extremely important. What it does is measure the oxygen/fuel level coming out of the engine. This tells the computer that the engine is either using the right air/fuel mixture or allows the computer to change the mixture slightly to allow the car to run properly. You could pull the sensor out and clean the terminal as it usually has alot of carbon build up due to its location, but this is normally a temporary fix. I hope this helps you with your problem.
Posted on Jul 23, 2009
A v-6 or v-8 engine will have two banks. Bank one is the side of the engine with the number 1 cylinder. Bank 2 is the other side of the engine. In your case Bank 1 is cylinders 1-3-5 on the back side of the engine closest to the firewall. Bank 2 is cylinders 2-4-6 on the other side of the engine.
You have two cats bank 1 and bank 2. There are two oxygen sensors before each cat that help determine fuel trim and are refered to as sensor 1 and two oxygen sensors after the cats that monitor cat efficiency and are referred to as sensor 2. The bank 1 sensor 2 O2 sensor is either providing a higher than expected signal or is switching like the sensor 1 O2's. If either of these has occurred the PCM detects that the cat is no longer working as it should and sets the code/turns on the check engine light.
9 times out of 10 it is a cat that has gone bad.
Posted on Nov 16, 2010
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