i have 2006 buick lacrosse it run hot wont start back up it turns over just wont catch to start

it was a small hose that was connected to radiator may have case things to get wet first time car ran hot just got car 6 months ago I saw mugged looking stuff in radiator so was going to replace it

My car has 16000 miles.
My car has an automatic transmission.

Experienced mechanics share their insights in answering this question :
Hi there:

If you’re Buick LaCrosse is experiencing overheating issues, it’s possible that you have suffered severe internal engine damage or damage to ignition system components such as your crankshaft position sensor or the electrical harnesses connected to these components. You should probably have a local mechanic determine why you’re having the overheating issues first, which will most likely help them also diagnose why the vehicle’s having starting problems as well.

How to Identify and Fix Common car Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced mechanics :

The most common reasons a Buick LaCrosse won`t start are a dead battery, an alternator problem, or failed starter.
The most common reasons a Buick LaCrosse is overheating are a coolant leak (water pump, radiator, hose etc.), the radiator fan, or a failed thermostat.
Common reasons for this to happen:

If you don`t have enough coolant running through the system due to leaks, ruptured hoses, loose hose clamps, whatever heat will build up, and your engine will overheat.

If the car cranks when you turn the key, but the engine won`t start, it could be because fuel isn`t getting to the engine. One potential reason for this could be dirty fuel injectors. Over time, the fuel injector nozzles can become clogged with rust, corrosion or debris.
That said, a severely overheating engine can cause the cylinder walls or the pistons themselves to warp, bend and deform. This will cause the perfect seal between the piston and the rest of the engine to lose integrity. Oil could be forced past the piston rings and into the engine, where it will burn the oil.
A problem with your ECU could spell trouble for your engine, Issues with timing, fuel-air mixture, and overheating can damage vital engine components over time, which can be expensive to repair.
Inaccurate fuel gauges, transmission issues, electrical issues, and engine issues are some of the most common Buick problems.
The 3.6 L V6 continues to be an option on the CX and front-wheel drive CXL and standard on the CXS and all-wheel drive CXL.
Bad Sensors

One common culprit for this problem is the crankshaft position sensor, which measures the position and speed of the crankshaft. The computer uses the information from this sensor to know when to fire the spark plugs. If the sensor isn`t working, the spark plugs won`t fire, keeping the engine from starting.

Why won`t my car start but the battery is good? If your car won`t start but the battery is good, the most common cause is a faulty starter – though it could also be to do with your fuel. You may have insufficient fuel to get the car going.
A Bad Crankshaft Position Sensor

The crankshaft position sensor monitors the position and rotational speeds of the crankshaft. Without the crank sensor, the engine control module (ECM) wouldn`t know when to fire the fuel injectors and ignite the spark plugs.

If your car is still running as normal even though the engine overheated (aside from the rising temperature), you can turn your heat on while you wait for assistance as this will help to pull heat off the engine and might help to salvage it if possible.
If you notice that your engine overheats, the coolant temperature sensor could be the problem. At times, the coolant temperature switch may fail such that it starts transmitting hot signals permanently. This causes the computer to erroneously counterbalance the signal, thereby causing the engine to misfire or overheat.
If you find that you`ve got a car running hot but not overheating there might be a few reasons: Clogged or damaged radiator. Low coolant level. Damaged water pump or thermostat.
Leaks are the #1 reason a vehicle begins to overheat. Leaks in hoses, the radiator, water pump, thermostat housing, heater core, head gasket, freeze plugs and a few other things can all lead to problems with the vehicle`s cooling system.
One of the symptoms indicating that your ECM is not working properly is engine stalling or misfiring. Sometimes, this sign doesn`t show that there`s something wrong with the engine but that there`s a malfunction in the engine control unit. The chances are that the engine stalling won`t be consistent.
If your engine is misfiring, stalling, or experiencing other performance issues, it may be a sign of a faulty engine control module. Given that the ECM is responsible for making adjustments to your engine, your vehicle may experience drastic changes in fuel efficiency, power, and acceleration.
Technically speaking yes you can use plain water in your cooling system but it isn`t recommended as a long term solution and certainly not in extreme weather conditions.
Set your multimeter to Ohms X10K (or 10kΩ) mode and connect one of its probes to each of the two terminals in the temperature sensor connector. The gauge should register “OL” meaning that it has detected an open circuit between these two probes; if not, then the temperature sensor may be malfunctioning.
Buick LaCrosse is a premium midsize sedan. It`s quiet and pleasant-mannered as we`d expect of a Buick, yet its steering is more precise than owners of previous Buicks might expect, and it turns into corners crisply, with little body lean.
The most common reasons a Buick Encore won`t start are a dead battery, an alternator problem, or failed starter. Search our network of RepairPal Certified shops near you to speak with a technician about your issue.
Most Buicks can`t match the latest competitors` gas mileage, however. As is the case with most car companies, it`s increasingly focused on SUVs. Some Buicks do quite well in our tests. With its modest model line, Buick is among the most reliable domestic automakers, trailing only Lincoln.
Buick vehicles have an average lifespan of up to 200,000 miles. Buick drivers report that their vehicles last between 150,000 and 200,000 miles. That second number, however, should not be regarded as a firm deadline!

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

i have 2006 buick lacrosse it run hot wont start back up it turns over just wont catch to start
ANSWER : Hi there:

If you’re Buick LaCrosse is experiencing overheating issues, it’s possible that you have suffered severe internal engine damage or damage to ignition system components such as your crankshaft position sensor or the electrical harnesses connected to these components. You should probably have a local mechanic determine why you’re having the overheating issues first, which will most likely help them also diagnose why the vehicle’s having starting problems as well.

Vehicle won’t start, once it’s jump started it only stays running until you turn it off, then it work start again without jumping.
ANSWER : Hi there. There could be two problems here. It is possible that your battery is bad and will not take a charge from your alternator while driving. In that case every time you shut your car off you will not have enough juice to start it again. Inspect your battery – it should have at least 12.5 to 13 volts to start your car, if it doesn’t you will need to replace the battery. The second problem could be that your alternator is bad and not charging your battery, in this case you will need to replace your alternator. Both the battery and the alternator can be tested in your car. If you would like to have the car checked for you, a certified professional from YourMechanic can come to your car’s location to diagnose the starting problem and proceed with repairs.

Wont start (Click), shift gear from P to R then back to P Starts it, after runs for a while it starts up fine.
ANSWER : Your vehicle has something called a neutral safety switch that will prevent the vehicle from starting when it is in any gear position other than park or neutral. Occasionally, this switch can malfunction causing the car to stall as soon as you put it into any gear. This switch usually also monitors gear selection data as well to transmit back to the computer. This switch is connected to the starter solenoid which allows it to complete the starter circuit only when the transmission is in park or neutral. I would suggest having a professional from YourMechanic come to your location to diagnose and inspect your vehicle.

Car won’t turn over. No lights come on when I turn it. Can’t even lock my doorsvor push the seat up or back.
ANSWER : Your probably correct, it sounds as though your battery is done. But it also sounds like you have charging system issues. I’m not sure that fixing your battery and charging system will solve the problem with the car shutting off, but it’s possible that it will and it’s a darned good place to start. By contacting Your Mechanic, you can have a technician come to your home or office to check out your car and help you figure out what to do next.

Fuel pump engages. Batery good, alternator good volts, jump start helps when wont start. Temp does not matter. Intermittent?
ANSWER : Hello. Thank you for writing in. There are several reasons your vehicle may only start when jump starting. The first and most common is a build up of resistance that is causing you to need a boost of voltage to get the engine started. This may be due to poor battery cables, a bad ground connection, a poor starter solenoid, and a couple of other issues. The first thing you want to do is perform a visual inspection of the starting system. Make sure there is no corrosion build up in the battery cables. You can also check the resistance across these wires and make sure you have a solid connection between components. You then want to make sure the starter solenoid is doing its job. It is responsible for taking the small amount of electricity sent by the ignition and turning it into a huge electrical charge that is strong enough to push over the engine with the help of some gear ratios in its favor. Do some more testing, and stick to the basics before assuming its something seriously complicated.

Car won’t start – 2004 Ford Focus
ANSWER : Hi and thanks for contacting YourMechanic. Check the battery cables for more corrosion and clean them up again. You may need to put backing soda and water mixture on the terminals to clean the corrosion completely off. Make sure that the cables are tight and also tight on the starter solenoid. By rocking the vehicle back and forth and using the clutch to start the vehicle, this is an indication that the cable on the starter is either corroded or loose. If you need further assistance troubleshooting your starting system, then seek out a technician, such as one from YourMechanic, to diagnose and resolve the issue.

Car turns off
ANSWER : The problem sounds like your alternator has stopped charging the car. This will cause the car to have weak electronics like what you are experiencing. Have the charging system double checked, and if verified as the fault, replace the bad alternator.

Car wont turn back on after being turned off, windows/radio turned off while car was running, dashbaord flickers on and off
ANSWER : The battery was loosing power and causing systems in the vehicle to shut down. Charge the battery up and have the alternator checked to see if its performing a 13.5 to 14.7 voltage and the proper amount of amperage. If the alternator is not working, then I recommend replacing it. If you need further assistance with your battery not holding a charge, then seek out a professional, such as one from Your Mechanic, to help you.