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Symptoms of a Bad or Failing Crankshaft Position Sensor
Common signs include issues starting the vehicle, intermittent stalling, and the Check Engine Light coming on.
Symptoms of a Bad or Failing Crankshaft Seal
If your car is reaching high mileage or is experiencing oil leaks, it may be time to replace the crankshaft seal.
Symptoms of a Bad or Failing Crankshaft Harmonic Balancer
Common signs include engine vibration, misaligned timing marks, and a separated harmonic balancer.
How to Replace a Crankshaft Seal
Engine oil leaks are prevented by the crankshaft seal. Replacing one requires several tools, such as a dead blow hammer and a strap wrench.
How to Replace a Crankshaft Position Sensor
The crankshaft position sensor, along with the camshaft sensor, helps the vehicle determine top dead center, among other engine management tasks.
How Long Does a Crankshaft Position Sensor Last?
The crankshaft position sensor monitors the rotational speed and position of the crankshaft in the engine. It reports this information to the engine management system to control the ignition system timing....
How Long Does a Speed Timing Sensor Last?
Your car’s engine needs a considerable number of sensors in order to operate correctly. Oxygen sensors, the vehicle speed sensor, the mass airflow sensor – these are just a few of...
Why Crankshaft Seal Replacements Can Be Tricky
Changing a crankshaft seal, such as the front cover seal, can be challenging. It may involve working on the engine or another complex part of the car.
How to Replace a Speed Timing Sensor
Some signs of a failed speed timing sensor include a Check Engine Light and poor performance. It's also known as the crankshaft position sensor.
How a Modern Engine Works
You turn your key in the ignition, and the engine fires up. You press the gas and the car moves forward. You take the key out and the engine turns off. That’s how your...
3 Essential Things to Know About Your Car’s Tachometer
The tachometer is located on the dashboard next to the speedometer. It measures the revolutions per minutes (RPM). The tachometer can be a digital display or on a calibrated analogue dial. They are on both...
How to Buy a Good Quality Crankshaft Harmonic Balancer
It sounds musical, but what it really does is disperse vibrations that travel through the crankshaft to prevent damage to it and other vehicle components. The harmonic balancer, or vibration damper,...
How to Buy a Good Quality Crankshaft Position Sensor
Just like the name indicates, the crankshaft position sensor monitors the rotation speed and position of the crankshaft. The crankshaft is what turns the engine’s piston power into a force that...

Related questions

Bought cheap crank shaft sensor, now a code is coming on.
Hi - regarding the crankshaft sensor - if the new one (cheap or otherwise) is not causing any misfire, it is just fine for now anyway. What code is "still coming up"? That is fairly important in the diagnostic process....
No spark despite new spark plugs. I just replaced the camshaft sensor and I have fuel in the rail.
Hi there. Not sure why you replaced the camshaft position sensor. The most likely cause for no spark, would be a faulty crankshaft position sensor. The vehicle's PCM (powertrain control module) should be recognizing the fault. Accessing the vehicle's PCM/computer...
Replaced crankshaft sensor and timing belt on 05 kia optima lx after. Kia engine kept stalling cutting off now its still not running
Hello and thanks for you question. Your vehicle could be having an issue with the alarm system. Sometimes when the engine's crankshaft position sensor fails and the ignition switch keeps on being turned to try to start the vehicle, the...
My car showtimes take a few times to start. It turns off while I'm driving & sometimes jerks. I was told it's my crank sensor?
Hi there, thanks for writing in. In short, yes, a crank position sensor that is damaged or out of alignment can cause the symptoms you are describing above. The crank positioning sensor monitors the position and rotational speed of the...
Accelerating gas and it dies wont start after acts like it wants too & won't. I already changed fuel pump igni module crank sensor
Hey there. There are several issues that will keep a vehicle from starting. It really depends on exactly what is keeping the vehicle from starting. You'll need to find out if there is proper fuel pressure, is it getting sufficient...
Car will not start after replacing timing belt, camshaft, crankshaft, and purge sensor
Hello and thank you for your question. Check the three essentials that an engine needs to run. Check the air, fuel, and spark. If the engine gets fuel and has a good solid pressure, has a good strong spark at...
Oil pressure low
Hi there, thanks for writing in. It's very possible that the crank position sensor is either sending faulty data or is broken and needs to be replaced. The car is shutting off automatically as a safety precaution due low pressure...
Adjusting the camshaft and crankshaft for the timing chain
I believe the "official" procedure for these M30 engines is to: Leave the tensioner until last Install the chain with the crank and cam sprockets on TDC, and the chain tight on the driver side of the chain Use...
My car is cranking but will not start,was told its the camshaft sensor.
Hello. This may be caused by many different issues, however, the camshaft sensor is one of those possibilities along with the crankshaft position sensor. There are few other possibilities, such as bad coils, spark plugs or potentially a fuel delivery...
Transmission. Car turning off when changing gears.
Hi there, thanks for writing in. This is a common issue on a lot of Nissan vehicles. Most of the time it is due to a faulty throttle body. The throttle motor fails at times and cannot keep the throttle...
Car stalls out of nowhere
Hello - what a frustrating problem to solve! You may have provided a key clue to the solution, given that it requires another vehicle to jump start it to get it going again. This MAY mean that the increased starting...
I have oil leaking from my car I had a estimate done on it last week and told me to replace the whole crankshaft.
Hi there. With a car of this age, it should be highly unlikely that the car would need the crankshaft replaced as this is typically something that does not fail unless under catastrophic conditions. There are a number of places...
I installed a new crankshaft positioning sensor, now I'm getting misfires and code P0300. Is this supposed to happen?
Assuming you replaced your vehicle's crankshaft position sensor for a P0335 trouble code and that code has not returned, this leads me to believe that the new sensor is either faulty or misadjusted. The sensor replacement should not have caused...
Crank shaft and fuel pump problem.
Hello. If you are referring to the engine crankshaft, then yes, a loose crankshaft can definitely cause damage. A loose crankshaft means that the bearings or journals are worn, which will continue to wear, usually at an accelerated rate until...
How many crankshaft position sensors are on a 2011 GMC Terrain?
Usually there will only be one crankshaft position sensor. However, there is also a camshaft position sensor as well. It is more likely that there is multiple cam sensors than crank sensors. It is possible for engines to have anywhere...
Crank Shaft Sensor and Fuel Pump Issues.
Hello. A loose crankshaft sensor may be damaged if it falls off or catches on something. Aside from that, a loose crankshaft position sensor may also cause engine performance issues, including stalling, as it is one of the primary inputs...
I have a slight wobble in crank shaft pulley will replacing it fix my problem? Its a 2000 lumina with 76,000 miles. thank you
Hello. The crankshaft pulley and harmonic balancer is one unit on your vehicle. There is a strip of rubber that separates the two components, that will perish over time. This is typically why it begins to wobble. You will need...
My car stalls arbitrarily and with no warning and is getting progressively harder to start.
Hello and thank you for contacting YourMechanic. The code P1684 means that there was a battery disconnect from a sensor to the computer, or in other words, a sensor has lost communication with the computer. The code P0420 usually means...
2005 Chrysler 300C changed battery and alternator. Car started, ran, and then battery light came on. Shut car off and wouldn't start.
Hi. There is a couple of things that could be wrong here. The battery or alternator that was just installed could be defective. Theses parts need to be tested for proper operation. There also could be a fuse, fusible link,...
I know this can be a little frustrating when you do so much work and nothing happens. Starting fluid isn't going to be good if it doesn't run afterwards. You may want to inspect your timing belt. I often turn...

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