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There are no reset buttons for a factory security system.
I would start buy checking for fuel pressure and spark. There will be a test port for fuel pressure on the fuel rail. you should see around 35 psi. If there is none than check for power to the fuel pump. I suspect you will find a fuel issue.
Generally if the a/c works fine at highway speeds but kicks out or slowly begins to blow warmer and warmer air as the vehicle is driven at slow speeds or is stopped the a/c condensor cooling fan is usually at fault. At highway speeds there is enough air being forced through the radiator, condenser, and oil coolers to keep everything working and cool but when the vehicle is moving slowly or is parked the electric and mechanical cooling fans have to be working to pull enough air through to keep things working. If the cooling fan isn't working or can't pull enough air through the a/c condensor the system will kick out once the internal pressure reaches a certain point. Once the vehicle is moving again the system can get rid of the heat that it has gathered from the passenger cabin, the pressure drops back to normal and the system cools again. I would start by looking for a blown cooling fan fuse in the fuse panel under the hood. Usually they are 25 amps or larger and run only the cooling fan.
BATTERY MUST READ 12 VOLTS AND 11 VOLTS ON A DRAW OR WITH A LOAD ON IT
IF YOUR ALTERNATOR STOPS WORKING THEN THE BATTERY WILL GO DEAD AS THE ENGINE HAS TO HAVE ELECTRIC TO RUN ( WHEN YOU CAR REACHES 8 VOLTS THE COMPUTER WILL SHUT OFF EVERYTHING TO SAVE IT'S SELF FROM BURNING UP SO CHECK YOUR ALTERNATOR AND RECHARGE THE BATTERY
The car may be hard to start because it may need a normal tune-up. If the spark plugs are pretty used, they will slowly stop burning as much fuel because the spark slowly gets lesser and lesser. On a cold day the fuel is harder to ignite with a small amount of spark.
Normal idle when its cold means that your cars idle is probably too high. If you lower the idle, the choke on a cold day will keep the idle a little higher until the motor warms and then it will kick back off. If the idle is too high, it will run very rich, smothering itself with fuel, and causing the idle to stay low. When the car warms, its creating better spark when its warm, and with the idle being too high its running at a fast idle.
The car wont start sometimes can be the cause of a few things. If the ground is bad on the fuel pump, it wont make a good connection sometimes for when you turn the key on, the fuel pump dont pump the fuel to the engine. Another one can be that your accessory switch can be loose going to the fuel pump. I think its your ground though. Good luck! Hope this helps.
Have a nice day.
When you tur the key forward do you hear the fuel pump running? You should hear a low hum for about 20 seconds near the gas tank and then it stops. If you hear this your pump is good. If it keeps running or you can't hear it at all it's bad or the main fuel pump fuse is blown.
pull your plugs and then get a breaker bar or a large ratchet with a leverage bar. Disconnect your belts and remove your crank pully. Find the apropriate socket and turn it. if it moves its not seized, However this does not and I repeat this does not mean there is not a lot of work ahead of you. You still nead to find out whats wrong and then the bigger problem how to fix.
If you have no clue of what the first part of the directions are please don't try this. Taking everything apart can just make a bad problem worse.