CYLINDER 1 AND 4 MISFIRES AND LOSS OF POWER

  • Tiny
  • andrewmwicigi
  • 2003 Volkswagen Golf
  • 75,000 miles

My car misfires whenever it warms up. I get the following fault codes
16685: Cylinder 1 misfire
16688: Cylinder 4 misfire
16684: Random/Multiple misfire
16825: Evaporative Emission System incorrect purge flow.

It loses power and regains as you drive on.

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Monday, September 17th, 2012 AT 5:07 PM

3 Replies

  • Tiny
  • ALLPRO
  • Expert
  • 49 posts

These vehicles are really prone to coil failures. I would swap the coils to cylinders 2 and 3 and see if the miss follows.

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Monday, September 17th, 2012 AT 7:54 PM
  • Tiny
  • andrewmwicigi
  • Member

Thanks. I have renewed all 4 coils and still experience the same problem. When the misfire occurs, I realised that the fuel injectors 1 and 4 do not have electrical pulses. Immediately I clear the fault codes, power on the connectors resumes and thereafter disappears. The engine is also very hot then but have no temperature sensor faults. Could my ECU?

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Tuesday, September 18th, 2012 AT 6:56 AM
  • Tiny
  • ALLPRO
  • Expert
  • 49 posts

It sounds alot like a computer problem.

The injector driver in the ecm might be faulty.

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Tuesday, September 18th, 2012 AT 12:42 PM

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