Are they so hard to get at that I have to take the car to a shop to change them? Are sensors considered regular maintenance? that is, should I change them every 50,000 miles?|||There are 2 oxygen sensors in a %26#039;96 Caravan. One is mounted in the exhaust manifold, the second is mounted just behind the catalytic converter. Most manufacturers recommend changing them at 60,000 mile intervals as preventive maintenance, but they generally will last much longer, especially if you do a lot of highway driving. If you have an emissions test in your state and the vehicle passes OK, and/or your %26quot;Check Engine%26quot; lite is not on, I%26#039;d leave them alone (JMHO). Depending on what engine you have determines the difficulty in changing the sensor(s). On all engines, the sensor mounted in the catalytic converter is easy to change. Exhaust mounted oxygen sensors are as follows: On the 2.4 liter engine, you%26#039;ll need to remove the air cleaner/resonator assembly, and you need a special O2 sensor socket to change it . On the 3.0 liter V-6, Remove the Air cleaner upper and lower housing to change it, but you%26#039;ll still need an O2 sensor socket. Now, on the 3.3/3.8 Liter V-6, it%26#039;s a nightmare to change. You need to unplug the electrical connector from the top of the vehicle. Then raise the vehicle, and using a 7/8%26quot; crows-foot and a flex head ratchet, you can slowly remove the sensor (VERY tight work space). Also, USE ONLY CHRYSLER SENSORS!! I have seen so many problems with aftermarket sensors, it%26#039;s not funny. Sorry for the long post, HTH!!|||A sensor will go anytime
It is located on the upper part of the exhaust near the manifold
and you should only have 1
Some are hard to get at
But I bet you can do it...|||here are the instructions from auto zone|||This depends on if it%26#039;s six cylinders or four and since this is an OBD 2 vehicle, it will have two for each bank. A four has two and a six has four. There will be one before and one after the catalytic converter. They should be changed every 40,000 miles.|||I%26#039;ve got a 97, and they%26#039;re not all that tough. The hardest was the upstream. If you%26#039;ve ever changed the plugs in your van, then you know how hard it is to get your arm back there? Well, you have to reach a little farther to get to the O2 sensor. It%26#039;s gonna be hard to do without the right tool. I think AutoZone lends them. I ended up having to cut the wire and use a plug wrench to get it. But that worked just fine. It%26#039;s totally worth doing it yourself and saving a lot of money. I%26#039;m a chick, if I can do it, you can.|||one
