E4 means your Ambient air temperature sensor is open/bad. It is located above and to the right of the a/c condensor core behind the front bumper. Other possible causes are shorted wiring to the sensor or a bad ground.
All I have heard is to replace it.
Dont repair...just replace it for your safety!
A training electronic equipment is needed to control how many cars come to a repair shop. This is what keeps count on how many customer you have.
You dont, you replace them.
You need to have the system checked for codes. You can then diagnose and find and repair the cause.
Electronic technician, electronic maintenance, small appliance repair, computer repair or maintenance technician and so forth.
96 Trooper how do you repair the electronic window rear passenger?
The first step is have the system checked for trouble codes. The cause will be the main factor in the repair.
4 how to repair climate controlI have a 95 park ave and my climate control broke and the heat stayed on, so I purchased a new climate control from a used parts place for around $70 bucks and installed it my self, you will need to take off the front dash pannel and unplug the old one and insert the plug into the new one. The climate control on my 92 PA was not working properly. I found that the vacuum line going through the fire wall had got disconnected. Connecting that solved my problems.
buy a chiltons repair manual they have all the diagrams
that depends whats wrong with it and your mechanical skills