20 Most Recent 1999 Chevrolet Lumina - Page 5 Questions & Answers

Take it , it does not set . ? only sets when driving over about 35. turned on light indicates on in cluster OK.. but will not set, right.?? Dealers go nuts with this one. give them a try. brake switch on brake peddle arm often fail and go out of ajustment. Next is big money unit under the hood. Cheaper to bye after market system.. check brake peddle cut out .switch . sw has 2 functions: brake lights off when at rest and on for crusie. remove connector. check out the switch.. the sw tabs often fail. tierap helps. or replace switch $ 20. item any local parts store. ajusted on install.

if fuses are good then check the brake light switch. one wire should have battery voltage all the time and power on the 2nd wire only with the brake pedal is pushed. if you have no power on the 2nd wire but on the feed wire then the switch is bad. if you have power going into the switch and out then you will have to check for a brake in the wire going to the rear brake lights. check the ground for the sockets if diagnosis goes this far.

The low pressure evaporative port (green cap) near the firewall,The re-charge port is usually BEFORE the compressor or ON the compressor itself.
Any HOSE or PORT coming out of the compressor is the High side. There are two ports on the A/C lines. One high pressure (bigger) and one low pressure (smaller). You will add the R143a into the Low Pressure port (smaller port) on the A/C line coming out of the A/C compressor (one that is belt driven).The compressor is usually located in the middle front of the engine.Follow the serpentine belt, the long belt that goes around the components.

----------For ac recharge port:-- Follow the larger hose from the compressor Could be near the drier at the passenger side firewall its located between the evaporator and compressor.--------the other possibility is -- A/C service ports are located on the drivers side of the vehicle in the front, right next to the battery, which is located under the windshield washer reservoir, it will kindof take some contorting to get to it, but thats where GM put it . Thanks. Keep updated for any more query. You can rate this solution and show your appreciation.

Replace the water pump this is the sign its bearings are going out and they start leaking out a weep hole in the back

When is the last time you had the transmission fluid changed? If you can't answer you might want to look into doing that before replacing a Automatic transmission which can be more $$$ than the engine.

could be a air lock in the coolant system or the thermostat may not be fully opening , take the thermostat out a place in a pan of boiling water a watch to see if it open completely if not fit a new one,

the low side charging port for the a/c is near the accumulator/receiver, dryer canister. in the larger a/c line. good-day ! the larger hose coming from a/c if you follow it back, you will run into the low pressure port. the a/c fitting, will only fit the low side so you cant get it wrong.

Although I have never personally removed the fuel tank from a 1999 Chevy Lumina, on most sedans you must first RELEASE THE FUEL PRESSURE FROM THE FUEL SYSTEM (follow standard safety precautions in doing so)*, hoist the vehicle on a lift, position a support under the tank, then undo the two fuel tank straps to free the tank. Once the tank is free, CAREFULLY maneuver the tank out of place, and disconnect the pressure line, return line, gauge lines, and vapor line from the top of the tank, before lowering the tank fully from the vehicle. It is also recommended that you siphon as much fuel out of the tank before proceeding to reduce the weight of the tank. * A good way to relieve the fuel pressure in the system is to either remove the fuse for the fuel pump or disconnect the inertial switch in the trunk so that the fuel pump cannot engage. Once you have disabled the fuel pump, start the vehicle. Once it stalls and cannot be restarted, the pressure has been relieved from the fuel system. NOTE: You will need to cycle the ignition key several times after you have finished your work, in order to restore fuel system pressure, prior to being able to restart the vehicle.

Only the left and right brake lights are wired through the turn signal switch. Don't go out and buy a new turn signal switch until after you try my trick. Does the center brake light illuminate when you depress the brake pedal? If it does, that will confirm the operation of the brake light switch at the brake pedal. Now try this: First get a helper to watch the lights, or park where you can see the reflection of the brake lights. To see what you have to work with, perform the following steps: 1 - Sit in the driver's seat and turn the ignition switch to "RUN". 2 - Pull the turn signal lever part of the way back in the direction you would to operate the high beam switch. 3 - While holding the lever back operate the turn signals. 4 - If both of the signals work, smile! If the problem is the same as it was on my car, the internal positioning mechanism may be all that is damaged an there is an easy fix you can do that will cost only a dollar. Imagine that there is a thingamabob inside the steering column that prevents the lever from moving forward. With the lever in that position, the switches remain in contact. Then imagine that the dimmer switch was pushed forward and caused the positioner to fail. Now there is a situation that allows the switches to separate and no longer make contact. The trick is to build an external positioning device that keeps the lever from moving forward. See how the lever extends through an opening in the steering column shroud? Fill the gap between the turn signal lever and the forward edge of the opening in the shroud. I found a piece of black rubber hose and: A - Cut the hose to the same length as the forward edge of the opening in the shroud. B - Slice the hose lengthwise. C - Position the hose so that it fills the gap between the shroud and the lever, and secure the hose in place so that it applies rearward pressure on the lever without interfering with the necessary movements of the lever for operation of the signals and dimmer. I hope that helps. If you need a photo, let me know. Good luck.

The drain tube from the evaporator housing is most likely plugged up. With the vehicle in the air locate the drain tube on the passenger side of the firewall and using coat hanging or something similar carefully snake it through it Be careful as a lot of water may pour out and don't go crazy poking with the coat hanging as the evaporator core is at the other end of the tube.

the heater and air conditioner control switch could be bad.

If your ac system has the snap on fittings it takes 134a if its the screw in fittings it takes r12.

good luck!

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A car with a bad vacuum line will often have a rough and/or "bad idle. A bad idle is uneven--the car's engine speed will fluctuate up and down as the engine computer struggles to find an equilibrium. to my knowledge the car will start but may quit because of a vacuum leak.Good-day!

It kinda sounds like it might be your car's computer that is something like a ECM. A bad coil pack could do same thing because with it being fuel injected that has no timing adjustment. What ever you do is don't try putting fuel into fuel jets as that will kill your engine computer. Read the Diagnostic Code Reader for a fault code that would provide area causing this problem.

It could be several different things causing this, my first guess would be to look at the EGR port going into the intake. Most times it will clog up and can cause rough idling. You must know how to clean it properly, the EGR valve will have to be pulled as well as the throttle body in order to clean it properly. Also, check for vacuum leaks. It could be other things as well but this is where I would start. Hope this helps. Thanks, Allen with Morgan's Auto Repair 912-282-1602 Waycross, Ga.