01 chevy impala ls

Asked by Brandon Jan 27, 2019 at 06:50 PM about the 2001 Chevrolet Impala LS FWD

Question type: Maintenance & Repair

My 01 impala will run and then it will shut off and not start
again for 30 mins to hr. Its almost like a vaper lock.

4 Answers
2,570

Sirkut_Interrupted answered 5 years ago

With this year id be concerned abt ignition inputs such as crank sensor, when it wont start see if the car is losing spark

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2,570

Sirkut_Interrupted answered 5 years ago

On both the 3.4 and 3.8 its a bypass ignition so during cranking the module alone controls spark without any input from the pcm, all it needs is power/ground and a crank signal.. the cam sensor is a 1x signal thats only there for injector sequencing so it will not give you a no spark

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