20 Most Recent 2006 Buick Lucerne CX Questions & Answers

check hoses for vacuum leaks also throttle body may need to be cleaned and or throttle body position sensor can be starting to be faulty or may require cleaning with throttle body --the following links show how to clean a throttle body look up the ones that do it in /on vehicle you dont have to remove it from vehicle How to Clean throttle body GM 3800 throttle Body Tune Up Cable accelerator... Throttle body cleaning and idle relearn procedure

Could be a single battery cell that is failing that sometimes causes strange things to happen. Well maintained battery terminals don't normally need cleaning. When a battery begins to age or there is an overcharging fault the terminals could begin to corrode. Trickling boiling water over the corrosion will help disperse it before drying off and finishing off with manual methods as required. Paying attention to safety (a battery can explode if the precautions aren't followed) disconnect the battery and using abrasive paper, scraping tools or wire brushes remove remaining corrosion and oxide deposits to leave shiny metal. Apply a thin coat of petroleum jelly to all the surfaces and components and then refit the terminals.

your car has an alternator that is supposed to charge the battery. The light comes on when it doesn't. Most likely your alternator needs to be fixed, though it could simply be a loose fan belt. "Battery charge system" means "Alternator" and the associated wiring.

The compressor may be locked up or you may have an air leak. Look at each shock absorber to see id an air line has become disconnected. This will let all the air out of the system.

first take hose off, or drain from drain plug. antifreeze is what you are draining. Then get a 15 mm rachett and socket and pry tension pully back so you can remove belt. unbolt water pump and take off. Once off clean engine block with razor blade,or something to get old gasket off. put a thin layer of rtv blue permatex on new water pump. Now put new gasket on new water pump on top of the permatex . let dry and set up, this will keep the gasket from moving around when putting back on. follow the process backwards and should b 30 min job . GOOD LUCK YOU CAN DO THIS FOR SURE. ONE OF THE EASIER ONES.........................

Have you checked the drivers handbook. Basic info is usually in there.

https://www.youtube.com/watch?v=ndOUb5FLGUQ

Could be either a bad pump drawing to many amps, or a bad relay, or any push connector which has corroded, even a ground wire.

Please refer to the owners manual.

Read this,https://autoservicecosts.com/obd2-codes/p0520/

What makes you thing it's a sensor ? A lot of thing's could cause this , taking the vehicle to a qualified repair shop is what should be done. They will do a full system scan . ENGINE HOT A/C OFF Cooling System Description and Operation Coolant Warning Messages The radio will display the following messages if the following conditions exist in the cooling system. • Engine hot--A/C OFF will be displayed if coolant temperature is above 117°C (243°F). For imports 115°C (239°F). • Engine coolant hot--Idle engine will be displayed if coolant temperature is above 118°C (245°F). • Engine overheated--Stop engine will be displayed if coolant temperature is above 123°C (253°F). Cooling Fan Control - Two Fan System The engine cooling fan system consists of 2 puller type electrical cooling fans and 3 fan relays. The relays are arranged in a series parallel (S/P) configuration that allows the engine control module (ECM) to operate both fans together at low or high speeds. The cooling fans and fan relays receive battery positive voltage from the underhood fuse block. The ground path is provided at G104. During low speed operation, the ECM supplies the ground path for the low speed fan relay through the low speed cooling fan relay control circuit. This energizes the low speed fan relay coil, closes the relay contacts, and supplies battery positive voltage from the low fan fuse through the cooling fan motor supply voltage circuit to the left cooling fan. The ground path for the left cooling fan is through the cooling fan S/P relay and the right cooling fan. The result is a series circuit with both fans running at low speed. During high speed operation the ECM supplies the ground path for the low speed fan relay through the low speed cooling fan relay control circuit. After a 3 second delay, the ECM supplies a ground path for the high speed fan relay and the cooling fan S/P relay through the high speed cooling fan relay control circuit. This energizes the cooling fan S/P relay coil, closes the relay contacts, and provides a ground path for the left cooling fan. At the same time, the high speed fan relay coil is energized closing the relay contacts, and provides battery positive voltage from the high fan fuse on the cooling fan motor supply voltage circuit, to the right cooling fan. During high speed fan operation, both engine cooling fans have their own ground path. The result is a parallel circuit with both fans running at high speed. The ECM commands the low speed cooling fans ON under the following conditions: • Engine coolant temperature exceeds approximately 94.5°C (202°F). • A/C refrigerant pressure exceeds 1447 kPa (210 psi). • After the vehicle is shut OFF, if the engine coolant temperature at key-off is greater than 101°C (214°F), the low speed fans will run for a minimum of 60 seconds. After 60 seconds, if the coolant temperature drops below 101°C (214°F), the fans will shut OFF. The fans will automatically shut OFF after 3 minutes, regardless of coolant temperature. The ECM commands the high speed fans ON under the following conditions: • Engine coolant temperature exceeds approximately 104.25°C (220°F). • A/C refrigerant pressure exceeds approximately 1824 kPa (265 psi). • When certain DTCs set At idle and very low vehicle speeds the cooling fans are only allowed to increase in speed, if required. This ensures idle stability by preventing the fans from cycling between high and low speed. DTC P1258: Engine Coolant Overtemperature - Protection Mode Active

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Things you should check is locate the fuse box and find the label: Generator/Alternator. It could only cause by the blown fuse. If the fuse is ok, then you maybe experiencing faulty alternator. Your battery will last for 10 to 25 minutes only and everything will shut down. I suggest get your alternator check by electrical mechanic.