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AutoTech08
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Category: Nissan
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Experience:  Diploma in Automotive Engineering, 30 years working experience.
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I start my car..accelerator & finally catches & runs fine..hesitation

Customer Question

When I start my car it starts fine but then dies right away. I can put my foot on the accelerator & finally catches & runs fine. Sometimes it starts fine without hesitation. It doesn't stall at red lights & doesn't act "funny" any other time. Please help.
Submitted: 5 years ago.
Category: Nissan
Expert:  AutoTech08 replied 5 years ago.

Hi there,

 

Did the Check Engine Lamp shows while driving?

When engine stalls on cold start, it usually is caused by a fault in the cold start system and possible causes are:

 

Check fuel pump circuit.
Check fuel pressure regulator.
Check fuel evaporative emission circuit.
Check Idle Air Control Valve (IACV)-Air Regulator.
Check idle speed adjustment.
Check Idle Air Control Valve-Auxiliary Air Control (IACV-AAC) valve
Check Idle Air Control -Fast Idle Control Device (IAC-FICD) circuit.
Check Camshaft Position (CP) sensor circuit.
Check Crankshaft Position (CK) sensor (reference) circuit.
Check Crankshaft Position (CK) sensor (position) circuit.
Check Mass Airflow (MAF) sensor circuit.
Check front Oxygen Sensor (O2S) circuit.
Check Throttle Position (TP) sensor adjustment and circuit.
Check Engine Coolant Temperature (ECT) sensor.
Check PCM inputs/outputs and PCM.

 

I believe the sensor replaced was the Knock Sensor.

 

 

 

 

 

 

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Diploma in Automotive Engineering, 30 years working experience.