I have no power from battery to the engine
Battery is good but no power to engine tried to jump start it and no good the horn won't blow as well as lights and gauges
My car has 165000 miles.
My car has an automatic transmission.
Experienced mechanics share their insights in answering this question :
If you are not getting power to the vehicle at all then there is likely some sort of wiring issue. I would carefully examine the battery cables and terminals for any signs of damage or corrosion that may be hindering their ability to conduct power. If the cables appear to be okay, I would then check the vehicle’s main fuses and relay for any signs of potential damage or the need for replacement. Get in touch with a certified technician, like one from YourMechanic, who can come to your home in order to service your car’s battery if you need some help with this. Good luck.
How to Identify and Fix Common car Problems ?
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The battery can be fully charged but still not be able to start the vehicle if it is failing or has a dead cell. Other likely issues are the fuel pump, ignition switch, battery cables, starter, or a clogged fuel filter.
Dead battery: A dead battery is the No. 1 cause of a no-start. If the battery is weak, but not totally dead, the starter may turn slowly.
If your vehicle won`t start, it`s usually caused by a dying or dead battery, loose or corroded connection cables, a bad alternator or an issue with the starter.
Your car battery can drain over time from stereo components (subwoofers), phone chargers, and anything you leave plugged into vehicle outlets that continue to draw power from the battery after the car is turned off. Other power drains include interior and below-vehicle LED lights. Loose or corroded connections.
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.
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.
Low engine oil, loose cables, and a clogged catalytic converter commonly cause reduced engine power. Tighten loose cables or clean your oxygen and mass air flow sensors to bypass reduced engine power. Replace your battery or catalytic converter if they are damaged to override reduced engine power.
Faulty spark plugs result in an engine misfire due to incomplete burning fuel. An interrupted combustion process can significantly affect the engine performance. Unattended engine misfire may result in intermittent strange engine sounds, power loss, and engine knock.
If the voltmeter reads between 14-15 volts then the battery is normal. But if the battery reads over 15 volts or less than 13 volts, then there might be a problem with the alternator. The alternator is over charging the battery or not giving enough charge to the battery.
Volts and amps do not necessarily correlate. Most batteries that fail the performance test are fully charged when they come into the shop, dipping into the cells to check the specific gravity of the electrolyte is an unnecessary hazard.
Bad or dead battery
The most common reason cars don`t start is a dead or faulty battery. Even though most cars run on gasoline, they all require electrical power to function. The starter that cranks your engine to start requires an electrical signal to fire.
Relevant Questions and Answers :
the most relevant questions and answers related to your specific issue
Engine malfunction light, reduced engine power, engine powered down
Hi there. There are a lot of things that can cause this on your 2012 BMW M5. I usually start by scanning the computer for codes to see what comes up. If there are not codes then I load test the alternator and the battery to see if they are failing. Low voltage in the electrical system will cause this. If that is fine, then it is usually caused by a failing throttle body. I have seen a lot of these fail due to the motors in them hanging up. If the problem is only happening intermittently, this can make the issue hard to duplicate, but you can still have tests done on the car. If you are going to have this fixed, consider YourMechanic, as a certified mechanic can come to your home or office to test the vehicle and diagnose the Engine Malfunction Light.
Reduce engine power / check engine light is on
Hi there. Most of the time, reduced engine power is caused by a restriction of fuel, or the throttle body’s inability to efficiently mix air and fuel. This could be caused by a failing mass air flow sensor, EGR valve or other fuel system components. Since the check engine light is on, you should have a professional mechanic complete an inspection at your location to determine what codes are stored and which components require repair. This should resolve your issue.
Can front wheel drive car engine power rear wheel drive
Anything is possible with enough engineering. The changes you are looking at would take major structural changes and would definitely not be an easy job. You could possibly consult a manufacturing engineer to get more details on how this could actually be carried out and whether it would be feasible.
Car sometimes give me acceleration and power issues. Engine power reduced message and engine light appear intermittently.
It is possible that your vehicle’s PCM has failed. This is somewhat of a common problem amongst many GM vehicles. If the computer has failed, this could be one of the reasons that no trouble codes are appearing and the fact that the problem is intermittent. It is possible that the computer is somehow getting overheated and by stopping the vehicle for a short period of time, the PCM cools down allowing the vehicle to run again. I would recommend having your PCM tested for proper function by a certified technician with experience in computer diagnostics.
I have Chrysler 300c. Battery light came on, changed battery and alternator but power still getting drained and battery light still comes on.
Hi, thanks for writing in. This may be a sign of a failing starter relay. The starter relay is a small unit near the starter that directs power to the starter from the battery. When this fails, it may cause a clicking sound and will not allow the starter to engage the flywheel when you turn the key. I would suggest having a professional from YourMechanic come to your home to diagnose your starting issue to determine the solution to get you back on the road.
My car is having power issues. I get a message that says engine power reduced/ service traction along with headlights flickering and engine cutting out.
Hi there. Check the battery and alternator to the vehicle. With all of the electrical issues that you are having, it sounds as if the battery is not charged and making the engine stall out due to lack power. Check the battery for a 12.6 volt reference and load test the battery. If the battery fails, then replace the battery. If the battery passes, then check the alternator and see if its putting out the full amount of amps. If you need further assistance with electrical issues, then seek out a professional, such as one from Your Mechanic, to help you.
If you replace both engine and transmission and still have reduced engine power, what do you do
The first thing to do is to have the computer system scanned and codes logged. Then clear the codes and road test to see if problem and check engine light returns. If it does then retest the system for codes and do the pinpoint test of the codes received to fix the problem. Any major failure can cause the computer to go into failure mode and limit speed and transmission shifting.
2012 equinox reduced power light engine light and traction light came on. Lost a lot of power got home and all light except engine
Your car has what is called a "safe mode" that will be engaged by the computer when it detects that something critical has gone wrong related to any of the major components in your engine chassis or power train. This may be related to a number of things, most of which should have been registered in the computer when the check engine light came on. I recommend having an expert from YourMechanic come to your location to inspect your check engine light and diagnose any codes registered by your vehicle’s computer.