1989 Nissan Maxima - Answered Questions & Fixed issues

All the wiring for all the windows flow through the master switch...both power and ground. So the problem is most likely a bad master switch or a broken wire in the hinge area of the driver's door. Get a wiring diagram and check for power and ground coming to the switch. If so, then the switch is most likely bad. Read this post http://ricksfreeautorepairadvice.com/window-goes-up-but-not-down/

White or blue?

If you have the original key you can look at the end of it where the actual key meets the plastic and you will see 4 engraved numbers that will be the original key code, if you have the manual you can look in it for the key code that you can use to reset the security key code to what every you want.

The steel belt in the tire shifted.

Take your car or cars vin number to the local dealer. They will printout a light and electrical wiring diagram. While there - as about RECALLS - you will be amazed at the out standing recalls people pass over.

what did the resistance on the injectors read. between the two connectors on the injector it must not drop below 10ohm, if these are per say "good injectors" than i would start with checking fuel pressure, not sure what pressure your particular car should have before the regulator but most have anywhere between 45-60 psi. if the fuel pump checks out than i would lean towards the catylitic converter being plugged up( easier to check this first and eliminate by looking under car and seeing the eminant glow) if this is plugged than the "ex gas sensor would throw a code" because it does not see the correct temperature feed back signal from the 02 sensor. the 02 sensor acts as a heating element and the exhaust gas is what cools it down by flowing across it, if there is no gas flowing by it that it cant cool down, it will also cause the engine to overheat and shut down... because it cant breathe. I would find the product they call cataclean at your local autoparts store read directions and see what it does. i havent used it myself but know people who swear up and down by it....cheaper than a new cat

Two separate problems. If the speedo is inop,, check connections at the transmission and at the back of the instrument cluster. If they are fine, replace instrument cluster.If the heater is not operating, check power and grounds, the in/output of the control switches. Generally the control unit in the dash is faulty.

In site for the most part, on the front of the motorYou only have one drive belt on most cars & it has to turn the pump your looking forIf your planning on adding any fluid, to any vehiclesystem, you have a leak to repairNo Fluids are consumed or need to need topped offAsk a neighbor to look for you or use google or You Tube Video

Have to remove the drive axles,to replace the bootsOn a car that old, may as well justreplace the axles

here ya go. Sadly, it's in the fuel tank. I believe there is an access door in the floor under the back seat, but I think that is more trouble to get to than just dropping the fuel tank.

One is power and the other is ground

Please see my tip at http://www.fixya.com/cars/r6235876-no_heat_fan_blowing_cold_air . These are generic instructions. If you get stuck or need specific instructions for your car, please get back to me with model, year and engine info.

TCM coding

If alternator is working,then the battery is shot.Or the alternator went bad and you fried the battery

I'm not a mechanic and I know this is an old post but I have the same car and in my research trying to figure out what's wrong with mine I have found in several posts that the MAF Sensor is bad because if it is bad the cars computer will NOT let it go past 2000 rpm's. When I saw that number in your post I KNEW that was the answer.

What have you checked so far ?Is the check engine light on ?

If you go to one of the auto parts stores online you can look it up - the size depends on the brand of belt.

The radio and a/c are on two different circuits other than both being powered thru the key switch. But they both share the same ground connections.Its possible the two problems are not connected.I would check the ground circuits for the radio and the blower motor. You may need a shop manual to find the wiring diagrams you will need.On import cars, the blower motor speed is usually controlled by a resistor in the ground circuit. So if that ground is not good, the fan will run thru the relay but not thru the resistor. The high blower relay bypasses the resistor.

It sounds like your starter relay could be bad.

Given everything you have already done to it I would suggest checking for a faulty distributor or coil. Have you checked the timing? I had almost the exact problem in a previous vehicle and it ended up that the top of the coil wire was arching onto the exaust manifold intead of firing the cylinders. I found this out by having someone rev the engine while I inspected all the plug wires and coil wire for external sparks. Good Luck keep me posted.