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Bent pulse wheel, CEL Misfire

unrealford

Mustang owner since 84
521
0
At work we have a article about the Pulse wheel that have 1 bent tooth that was creating
Issues with the 3.5 ecoboost engine.
It goes on to says each tooth creates a pulse for a magnetic sensor inside the engine.
The engines were haveing intermittent issues that couldn't trace down the problem. A 47 yr employee kept trying6a5emate.jpg to track it down and found it.
The system is supposed to identify when the number 1 cylinder is TDC, but with the one tooth bent, the sensor would identify multiple cylinders at #1 causing engine sputtering and check engine issues.
 
Very interesting and great find.
 

unrealford

Mustang owner since 84
521
0
Re: Re: Bent pulse wheel, CEL Misfire

WinterSucks said:
I wonder how just one tooth would get bent. Careless assembly or handling? They don't look that weak.
Yes, they traced it down to handling.
 

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