Skip the auto shop - Our mechanics make house calls

Q: I fixed the crankshaft sensors and cam sensor and it's still pulls up the crankshaft code can it be my ecm

asked by on

I replaced my crankshaft sensors and my cam sensor on my 2004 Impala 3.4l and it's still pulling up the crankshaft code and when it gets hot it's hard to start till it cools down then it starts could it be my ecm

My car has 135 miles.
My car has an automatic transmission.

A: You will need to monitor the crankshaft sen...

You will need to monitor the crankshaft sensor input to the ECM to see if the signal is correct or going away when it gets hot. This is caused when a sensor is not producing a strong enough signal or when the sensor is too far away from the sensor ring.

Perform the test and also make sure the sensor is correctly positioned as close to the sensor ring as possible. This engine had two types of sensors for this year. There is one on the side of the engine block and another behind the crank pulley. Make sure that the pulley sensor ring is not bent and the pulley itself is fully seated.

If you need some assistance with these checks, consider contacting a qualified mechanic who can diagnose the trouble code and make the necessary repairs to your vehicle.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Hi can you use gasket maker on 05 impala oil pan 3.8 instead of paying 100 bucks for gasket

Hi there. If you use gasket maker instead of the gasket made for the motor, then you would not have a good seal and the oil pan would be too close to the oil pickup tube and restrict the oil...

Q: Window not working

There are a few reasons why the window in your Honda Civic will not roll up or down. The issue may be as simple as a blown fuse, or something as serious as a bad window motor. There may also...

Q: Starting issue, fuel smell

A few things can cause rough starting like you have described. The usual culprits are issues with the battery, starter, fuel pump, fuel filter, or the ignition switch. I'd recommend enlisting a qualified technician to help you check these components....

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...