What happens when an O2 sensor goes bad in a jeep?
What happens when an O2 sensor goes bad in a jeep?
When an O2 (oxygen) sensor go bad, it’ll cause your Jeep Grand Cherokee ‘s engine to run less efficiently. Your Grand Cherokee can exhibit symptoms when the Oxygen sensor has gone bad.
Where is the coolant sensor on a Jeep Cherokee?
Your Jeep’s coolant sensor (or at least the one that annoying light is referring to) is located in your coolant overflow reservoir. There’s something about the design that is almost guaranteed to cause a failure of some sort. Sometimes it’s the wiring, other times it’s corrosion at the plug. Then sometimes the sensor really us the problem!
Can a bad oxygen sensor cause a check engine light to come on?
The trouble codes associated with the OBDII scan will reveal which sensor is at fault and why it is bad (at least what the computer thinks is wrong). It is very rare for there to be a problem with an oxygen sensor, and not have the check engine light come on. Here are the most common symptoms of a bad oxygen sensor in your Grand Cherokee:
Where is the oxygen sensor in the engine?
An Oxygen sensor that is between the catalytic converter and the engine is known as an “upstream” sensor. Oxygen sensors after the catalytic converter are “downstream sensors”. As a rule, the upstream sensor is more important for engine timing and air/fuel ratios.
When an O2 (oxygen) sensor go bad, it’ll cause your Jeep Grand Cherokee ‘s engine to run less efficiently. Your Grand Cherokee can exhibit symptoms when the Oxygen sensor has gone bad.
Your Jeep’s coolant sensor (or at least the one that annoying light is referring to) is located in your coolant overflow reservoir. There’s something about the design that is almost guaranteed to cause a failure of some sort. Sometimes it’s the wiring, other times it’s corrosion at the plug. Then sometimes the sensor really us the problem!
The trouble codes associated with the OBDII scan will reveal which sensor is at fault and why it is bad (at least what the computer thinks is wrong). It is very rare for there to be a problem with an oxygen sensor, and not have the check engine light come on. Here are the most common symptoms of a bad oxygen sensor in your Grand Cherokee:
What should the coolant resistance be on a Cherokee?
Remove the coolant sensor from the reservoir tank. With the float all the way down, the resistance across the contacts should be zero. Now raise the float up as if you had a full coolant tank — the resistance should be approximately 3.3 ohms.
