My '02 explorer problems : 1)4 whl drive hasn't worked for 5 years, it used to blink..2)check engine light ALWAYS on, even when oil/filters have all been changed...3)door open light always on, so power locks don't work...yes we have closed all the doors several times...4)NOW the power windows don't work, occasionally they will if the doors are open, I can't find the fuse for those or the 4 whl drive. NOTE: I live in a remote interior village of Alaska, only accessible by barge or air. Spouse has worked on Ford's for years, but this quirky car is a challenge. Any advice?
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Re: '02 explorer woes
Ok...several issues,and you won't believe this.......The 4 wheel drive is controlled by the Body computer,thats right,there is a computer that monitors and instructs Body functions like the door ajar sensors.Well,i just finished reading a technical article on a FORD that had no 4 wd,and the transfer case controller would not allow 4wd operation because the BODY computer sensed a door ajar,so 4wd operation was inhibited.They fixed the door ajar problem,a door sensor,the door ajar light went out on the dash,and the 4wd started working again...OK.....Check engine light is the vehicle computer that controls engine and transmission functions(PCM) has detected an error with a system.When this happens,the computer stores a diagnostic trouble code.Have the codes pulled with a scan tool or code reader.Repair the codes,and the Check Engine light will go out.The power windows,i honestly don't know,but HEY...2 out of 3 ain't bad!!
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This code means that the O2 sensor is bad. This is the first 02 sensor on bank 2, of the engine. It is stuck on a lean setting, and needs replaced. Bank 1 refers to the side of the engine that has the #1 cylinder. Bank 2 is the opposite side of the engine. Good-Day! If you have any questions on this, Im sure any auto parts store will help you out Auto-zone Etc, They will even scan a problem code for free, as long as the check engine light is on.
The check engine light is blinking usually because of a misfire which can cause damage to the cat. The blinking check engine light does not necessarily mean the the cat is damaged.
The first thing you need to do is find out what codes are causing the check engine light to come on. If there is an O2 code it will help you identify the O2 sensor. The sensors are divided into to banks. Bank one is the same side of the motor as the number one cylinder. Bank 2 is the other side of the motor. Then they are divided into sensor 1 and senor 2. Sensor 1 is always before the cat. Sensor 2 is always after the cat. So if you had an O2 code for the Bank 2 sensor 1 O2 sensor it would be the opposite side of the engine from the number one cylinder and the sensor before the cat.
IMO, your first priority should be to figure out why the engine is misfiring and causing the check engine light to blink. Solving that first may take care of the O2 issues or the O2 could be the issue.
1999 FORD TRUCKS EXPLORER 4.0L 6-cyl Engine Code [E] SOHC Engine Oil Grade 1......API* All TEMPS......5W-30Engine, with filter..........4.7 liters 1999 FORD TRUCKS EXPLORER 5.0L 8-cyl Engine Code [P] Engine Oil Grade 1......API* All TEMPS......5W-30, 5W-20 approved for this application per Ford TSB 02-1-9Engine, with filter..........4.7 liters Here's the information your looking for and thank you for using Fixya
The exhaust system has two 02 sensors One before the cat converter and one after. The #2 02 behind the cat converter is the one that trips the light if emmisions are unacceptable coming out of the converter. The #1 or front 02 sensor monitors and constantly adjusts the fuel to stay within parameters. If the #2 tries to compensate for an inefficient converter and it conflicts with the #1 02, the ebgine will run poorly due to either too rich or too lean fuel adjustment. Have the #2 02 sensor replaced and the converter checked. Good luck
This is where at home diagnosis and in-shop diagnosis diverge. A shop will begin by checking that bank for an over rich or lean condition, then moving closer to finding the problem which for example could be an injector with a bad spray pattern or leak, or a minor vacuum leak somewhere .(too many other items to mention) You can do further testing with the use of a manual and a decent digital volt-ohm meter.It takes more time and isn't always as productive but most times with a bit of research and learning on your part the problem can be found. Unless I made a lucky guess, I could spend all day writing down ideas and would not be correct.