Make a donation
« previous next »
Pages: [1]   Go Down

Author Topic: Misfire - no CEL?  (Read 2208 times)

Offline oo1005

  • Always Involved
  • ****
  • Thank You
  • -Given: 1
  • -Receive: 0
  • Posts: 52
Misfire - no CEL?
« on: March 27, 2015, 03:14:01 pm »
Car has developed an occasional misfire, but no engine light at all, even when trying to load the engine when its missing...

Need to plug the VCDS on when I get home to double check but does this sound weird? Felt like coil pack (had one go before) but that threw the light on..

Cheers
Logged
'07 GTi 5dr Black, Monza IIs, Xenon

Offline cooljimy84

  • Always Involved
  • ****
  • Thank You
  • -Given: 11
  • -Receive: 18
  • Posts: 215
    • Personal
    • Email
Re: Misfire - no CEL?
« Reply #1 on: March 27, 2015, 04:42:08 pm »
Could be a huge range of things, tho it might not have popped a check light, cause it's only missing every so often.
As u said have a look with vagcom for any 'soft' errors.
Logged
There is no replacement for displacement....
But a turbo does help....

Offline oo1005

  • Always Involved
  • ****
  • Thank You
  • -Given: 1
  • -Receive: 0
  • Posts: 52
Re: Misfire - no CEL?
« Reply #2 on: March 27, 2015, 04:42:52 pm »
Cool - cheers. Just wanted to check that there could still be error codes without the CEL.
Logged
'07 GTi 5dr Black, Monza IIs, Xenon

Offline oo1005

  • Always Involved
  • ****
  • Thank You
  • -Given: 1
  • -Receive: 0
  • Posts: 52
Re: Misfire - no CEL?
« Reply #3 on: March 27, 2015, 06:45:45 pm »
Cant find my VCDS cable but ran Diagnostics on my Bluefin - only showing P0441 which I think is unrelated?
Logged
'07 GTi 5dr Black, Monza IIs, Xenon

Saintsteve

  • Guest
Re: Misfire - no CEL?
« Reply #4 on: March 27, 2015, 08:25:58 pm »
You may have injector issues which won't throw a CEL light Untill the misfire count hits above the permitted amount.

Use VCDS and check blocks 15 and 16 under engine cylinder live misfires to watch what each cylinder is doing.

Very common issue unfortunately , excessive carbon build up on the induction side may well be to blame.
Logged

Saintsteve

  • Guest
Re: Misfire - no CEL?
« Reply #5 on: March 27, 2015, 08:28:34 pm »
Logged
Pages: [1]   Go Up
« previous next »