A/c sometimes works 01 altima

1.   Close and lock all doors with the driver’s side power lock/unlock switch.

2.   Insert key into ignition and remove it from the ignition key cylinder at least six times within 10 seconds. Your Hazard Lamps will flash if you have performed this step successfully. NOTE: Withdraw key completely from ignition cylinder each time. If this procedure is performed too fast, system will not enter programming mode.

3.   Insert key into the ignition cylinder and turn to the ACC position.

4.   Within 5 seconds, push ANY button on the remote transmitter. Your Hazard Lamps should flash. NOTE: Do not press the button more than one time in the above step. If the button is pressed more than one time, the programming procedure will not be successful.

5.   If there are any remaining transmitters (including the old ones), unlock then lock all doors using the driver’s side power lock/unlock switch and within 5 seconds, push ANY button on the next remote. Your Hazard Lamps should flash. Repeat this step for each transmitter (including any existing transmitters).

6.   Turn the key to the OFF position, remove keys from the ignition, unlock doors using the driver’s side power lock/unlock switch and open the driver side door.




Make sure you have the right fob for your car.

If the clutch has been replaced check the engine grounds and tranny grounds. you might be getting a change in ground when the clutch is pressed.

Its probably the brake switch. When the brake pedal is depressed there is an electrical switch that is tripped and it tell the car that the brakes are engaged and safe to start, shift into gears, etc. Mine went out on my 2008 Altima and was a fast 50 dollar fix at the dealership. Its worth it to just pay the dealership rather than try give yourself a headache trying to figure out how to replace it yourself.

do the brake lights come on when you press the brake? If not the brake switch is bad. If they do, check your brake fluid. Ive heard of these Altimas having bad master brake cylinders. If your brakes(pads) are good and your fluid is really low, this may be your culprit. Should be covered under warranty.Let me know how you make out.

1. Close and lock all doors with the driver’s side power lock/unlock switch.

2. Insert key into ignition and remove it from the ignition key cylinder at least six times within 10 seconds. Your Hazard
Lamps will flash if you have performed this step successfully. NOTE: Withdraw key completely from ignition cylinder
each time. If this procedure is performed too fast, system will not enter programming mode.

3. Insert key into the ignition cylinder and turn to the ACC position.

4. Within 5 seconds, push ANY button on the remote transmitter. Your Hazard Lamps should flash. NOTE: Do not press
the button more than one time in the above step. If the button is pressed more than one time, the programming
procedure will not be successful.

5. If there are any remaining transmitters (including the old ones), unlock then lock all doors using the driver’s side
power lock/unlock switch and within 5 seconds, push ANY button on the next remote. Your Hazard Lamps should
flash. Repeat this step for each transmitter (including any existing transmitters).
6. Turn the key to the OFF position, remove keys from the ignition, unlock doors using the driver’s side power lock/unlock switch and open the driver side door.

maybe the fan for the A/C under hood isnt switching on the condensor is there ,its like the radiator for the A/C

Sounds like a control panel or A/C push control unit ! (electronics)
Here is section from repair manual . Download 2000 Nissan Altima Heater Air Condition Section HA PDF Manual 76...

check the coil and the condensor on the dist or the electronic module

sometimes if the steering wheel is in a bind the switch will not turn try turning the wheel a bit while at the same time turning the switch good luck

you might check the coil points and condensor or if it has one the sensor on the side of the distributor. i dont remember if it has points and condensor or not but either way it will keep it from starting