Cylinder 1 and 4 misfires and loss of power

Tiny
ANDREWMWICIGI
  • MEMBER
  • 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.
Monday, September 17th, 2012 AT 5:07 PM

3 Replies

Tiny
ALLPRO
  • MECHANIC
  • 48 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.
Was this
answer
helpful?
Yes
No
Monday, September 17th, 2012 AT 7:54 PM
Tiny
ANDREWMWICIGI
  • MEMBER
  • 2 POSTS
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?
Was this
answer
helpful?
Yes
No
Tuesday, September 18th, 2012 AT 6:56 AM
Tiny
ALLPRO
  • MECHANIC
  • 48 POSTS
It sounds alot like a computer problem.

The injector driver in the ecm might be faulty.
Was this
answer
helpful?
Yes
No
Tuesday, September 18th, 2012 AT 12:42 PM

Please login or register to post a reply.

Related Engine Low Power Content

Fix an Engine with Low Power!
VIDEO
Fix an Engine with Low Power!
Instructional repair video
Symptoms of Low Engine Power
GUIDE
Symptoms of Low Engine Power
The power your car's engine is producing is important. When you step on the gas you need your car to accelerate, mainly to keep you out of trouble when getting onto the...
VIEW MORE