Stall on me when I was driving?

JOHN ASPINALL

MEMBER
2002 VAUXHALL ZAFIRA
61,000 MILES

My 52plate 2litre diesel Zafira stall on me when I was driving and when I restarted it two warning lights remained on the dash and the rev were hunting and it went in to limp home mode with no rev counter working. But when I restarted the engine when it had cool down everything seems to be fine even the rev counter works and the engine revving fine. Someone has told me this could be a crankshaft sensor problem the car has just had a oil change and service so any advice would be welcome. Thanks john

1 Reply

SQM

MECHANIC
6,383 POSTS

Hello,

It does sounds like a faulty crank position sensor.
With heat and vibration from the engine the crank sensor can lose its internal calibration and send error signal to the ECM, this can trigger a shut down. Depending on the fault, the engine may or may not restart.
Many times, the crank sensor will fault when the engine it hot and it could work normal after it cools down.

The crank sensor is located on the lower part of the engine next to the starter.

https://www.2carpros.com/articles/how-a-crank-shaft-angle-sensor-works
https://www.2carpros.com/articles/symptoms-of-a-bad-crankshaft-sensor

Is your check engine light illuminated? If so, retrieving the codes can help with the diagnostics.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Please let me know of any questions.
Thank you.

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