SOURCE: 2001 Infiniti QX4 low beam bulb replacement instructions
Look directly behind the headlight box if there is a rubber sleave covering the plug take it off. Unplug the wires from the bulb, there may be a saftey clip you will have to pry up to get it off.after you get the plug off the bulb holder should twist counterclockwise then it will pull right off.When you change the bulb just remember to wipe your body oil off the bulb before attaching it back into the headlight box. Then plug it back in and your in business. The high beam has three wires and the low beam has two wires. The bulb will have to be the right one.
God Bless You Greg
SOURCE: how many catalitic converters are on the 2001 infiniti QX4
There are only to Catalysts monitored by the ECM. There is a wide pipe near the front of the exhaust system that looks like it houses a catalyst, but it doesn't. Look for the rear O2 sensor, that is where the catalyst is. If the bolts that hold it on are not badly rusted, and depending on your mechanical aptitude you could replace them, otherwise take it to a shop. Have you checked the warranty coverage with the dealership?
SOURCE: How to change Headlight HID bulbs in Infiniti QX4
It is really not that difficult for an 01 qx4, and if you order the bulb online you'll save enough money that if it takes you two or three tries (and bulbs) you'll still save over what the dealer or a mechanic would charge you:
Don't touch anything on the new bulb besides the plastic base (don't touch the glass!)
1. Make sure you disconnect the battery before anything else (you don't want to get shocked by these high voltage babies). If you're replacing the passenger side bulb, take the battery out for more room to work, especially to see what's going on in there (you can undo the air filter case on the drivers side for the same benefit, again--disconnect the battery first). 2. Find and unscrew the round, black, plastic lid behind the headlight, it's up and to the left. 3. You'll see a shiny metal connector with electrical warnings printed on it and Michael Jackson glove looking wiring attached to it. Turn that gently to the left to open up access to the actual bulb (you'll now see the bottom/back of the bulb--a black circle with a small metal tip in the middle). 4. Unhook the two metal braces that hold the bulb in place (push in gently to let wire out--kind of like unhooking a bungee cord or unsetting a mouse trap). 5. Pay attention how the two divots on the bulb case line up with the little nubs at the top of the encasing (you have to put the new one in lining up the same way.) 6. You can now take out the bulb. You might consider practicing the replacement sequence with your old bulb that you just took out before sticking the new one in there--just to get the hang of it so you aren't banging the new one around. 7. Once you've got the bulb back in there just put everything else back in place in reverse order. 8. Wash those dirty hands and try turning on your lights. 9. Go celebrate your automotive victory by driving somewhere at night!
SOURCE: Pls where is Swirl Control Solenoid Valve located in Infiniti QX4
This link shows the location of the SCV, If your motor is different the location should be similiar. http://img510.imageshack.us/img510/5687/vacuumdiagramuh3.jpg
There's a vaccuum line that runs off the SCV to the SCV check switch.
P0442: Have you inspected the lines, charcoal cannister etc? Make sure the fuel cap is tight. The easiest way to check the system is to have someone perform a smoke test. I had a DTC on my car which indicated a EVAP problem, it turned out to be the Fuel tank evaporator Control Solenoid.
SOURCE: tryen to find location of the crank sensor on 1998 infiniti QX4
looking for crankshaft sensor on 1998 infiniti qx4
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