CYLINDER 1 AND 4 MISFIRES AND LOSS OF POWER

2003 Volkswagen Golf

Tiny

andrewmwicigi

September, 17, 2012 AT 5:07 PM

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.

FOUND 16219 RELATED QUESTIONS

3 Answers

Tiny

ALLPRO

September, 17, 2012 AT 7:54 PM

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

Tiny

andrewmwicigi

September, 18, 2012 AT 6:56 AM

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?

Tiny

ALLPRO

September, 18, 2012 AT 12:42 PM

It sounds alot like a computer problem.

The injector driver in the ecm might be faulty.

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