2002 chevy impala 3.4 crankshaft position sensor location

2005 Chevrolet Impala

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Crankshaft Position Sensor A
Crankshaft Position Sensor B
More Articles
What are the symptoms of a failing crank sensor?
How many camshaft position sensors are in a v6?

Asked by in Racine, WI on October 17, 2013

where is the position of the crank sensor on the 2005 impala. Is it hard to do it yourself?

2 replies Report

Sensor A is behind the harmonic balancer, Sensor B is Left Rear on engine. They're not hard to replace, it's just how difficult they are too get to.

Depends on what engine option you have the 3.4liter engine has 2 different sensors...one is on side of block and the other is other is on the front of the engine behind crankshaft pulley.
Both 3.8 liter engines have 1 sensor in front behind crankshaft pulley.

I do have the 3.4 engine. Is it a do it youself ? Is that the driver side of the block?

I suspect that you could be barking up wrong tree going after the sensor. They do not fail too often and difficult to diagnose without using lab scope to check it. It would be more likely the one behind crankshaft pulley can set up a problem. What codes?

I did a tune up on the car. The check engine comes on so I took it to have the codes read. Now I have a random missfire and crank sensor come up. I get crapy aceleration when I hit the gas. What else could it be?

Hard to say for sure...P0300 I assume is the ramdom missfire code...what is the crankshaft code?

The 2002 Chevy Impala with a 3.4-liter engine has two crankshaft position sensors, crankshaft position sensor A and crankshaft position sensor B. Replacing the sensors is easy once you know where they are.

Crankshaft Position Sensor A

Crankshaft position sensor A is the sensor on the part of the engine block facing the front of the vehicle. This sensor is slightly above and toward the passenger's side of the engine oil filter.

Crankshaft Position Sensor B

Crankshaft position sensor B is attached to the block of the engine near the rear of the engine compartment. It is exactly below the exhaust manifold, toward where the transmission and engine bolt together.

Function

The crankshaft position sensor is a magnetic sensor. It measures the exact position that the crankshaft is in and the engine's rpm and relays that information to vehicle's computer. The computer measures the timing of the ignition and fuel injectors according to the crankshaft's position.

References

Writer Bio

Justin Cupler is a professional writer who has been published on several websites including CarsDirect and Autos.com. Cupler has worked in the professional automotive repair field as a technician and a manager since 2000. He has a certificate in broadcast journalism from the Connecticut School of Broadcasting. Cupler is currently studying mechanical engineering at Saint Petersburg College.

What are the symptoms of a failing crank sensor?

5 Signs of a Failing Crank Sensor.

Crank Sensor Problems Could Make it Hard to Start Car. One sign that your crankshaft sensor might be failing is if you find it hard to start your vehicle. ... .

Engine Vibration Issues. ... .

Fuel Economy Slippage. ... .

Uneven Acceleration. ... .

Check Engine Light On..

How many camshaft position sensors are in a v6?

While the number can vary based on the age of your car, a new car should have four camshaft sensors, one for each camshaft. A camshaft sensor determines the exact position of your engine's camshaft, helping your car keep your engine's combustion running smoothly.

chevy impala crankshaft position sensor location