Q: My Check Engine Light is on and my truck does not idle when cold. Do I need a new crankshaft position sensor or is this an ECM or timing chain issue?

asked by on

Two years ago my truck backfired and would not run. I replaced the distributor, egr valve, mass airflow sensor, cleaned the intake and adjusted the throttle to idle slightly higher than normal.

Now my truck will not idle when cold, and sometimes will not idle when hot. Otherwise it runs great through acceleration. Check engine light says the crankshaft position sensor is bad but I replaced it as well and code remains after resetting.

So, how do I test all the electronics? Is it worth it or just get the timing chain replaced? I do not think it has been replaced at all.

Thanks!

My car has 220000 miles.
My car has a manual transmission.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. My Check Engine Light is on and my truck does not idle when cold. Do I need a new crankshaft position sensor or is this an ECM or timing chain issue?

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Hello there, I have a question about my Chrysler 200, 2012.

Hello, we will be happy to assist you. Usually when a transmission presents fault codes like that a new transmission will be required. Though it is less likely that your transmission will need replacement because it is somewhat new. You...

Q: Front Passenger Lock sometimes does not lock with a remote control or by locking button located on either doors.

The solenoid is on the door latch and is most likely the cause of the problem for your 2005 Toyota Tacoma. If you want to have this inspected and repaired, a certified technician from YourMechanic can come to your home...

Q: Q: Transmission slips

The transmission may be slipping internally from a bad clutch servo or it has an internal seal leak. Have the transmission tested for proper pressures to see if it is a solenoid issue or the seals are leaking causing it...

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...