Notices

How to diagnose coilpack failure V1 WRX

Old 13 August 2011, 01:04 AM
  #1  
wotagr8bigchief
Scooby Regular
Thread Starter
iTrader: (1)
 
wotagr8bigchief's Avatar
 
Join Date: Jun 2011
Location: sussex
Posts: 316
Likes: 0
Received 0 Likes on 0 Posts
Default How to diagnose coilpack failure V1 WRX

Hello guys, I cant get any more than around 3500 revs without my engine hesitating and almost cutting. At first I though it was overboost but have installed a guage is boost is normal sooo my next thought would be coil pack or crank sensor. I am going to put it in diagnostic mode tommorow and attempt to read the fault but looking at the codes there doesnt seem to be one for coilpack and certainly not one for each individual pack. Any advice would be appreciated, cheers
Old 13 August 2011, 09:30 AM
  #2  
expat dan
Scooby Regular
 
expat dan's Avatar
 
Join Date: Jul 2008
Location: stockholm
Posts: 83
Likes: 0
Received 0 Likes on 0 Posts
Default

this happened to me and it was the MAF
Old 13 August 2011, 09:54 AM
  #3  
mylilscooby
Scooby Regular
 
mylilscooby's Avatar
 
Join Date: Aug 2010
Location: southend
Posts: 207
Likes: 0
Received 0 Likes on 0 Posts
Default

I think you have to take them out and look for cracks or noticeable sign of damage? When I sold some (yes I do have 4 more sitting around) someone took the rubber off around the tip and was looking for damage
Old 13 August 2011, 11:48 AM
  #4  
tubbytommy
BANNED
iTrader: (20)
 
tubbytommy's Avatar
 
Join Date: Mar 2010
Location: crawley :)
Posts: 16,950
Likes: 0
Received 1 Like on 1 Post
Default

when my coilpack failed the cel light came on and when i attached code reader it told me the coil no.
Old 13 August 2011, 04:07 PM
  #5  
scooby kid
Scooby Regular
iTrader: (6)
 
scooby kid's Avatar
 
Join Date: Jul 2010
Location: hastings
Posts: 1,590
Received 11 Likes on 6 Posts
Default

could be-

Boost leak or coil pack but im guessing boost leak. if it hasnt thrown up the eml light
Old 13 August 2011, 07:37 PM
  #6  
Jamz_
Scooby Regular
iTrader: (12)
 
Jamz_'s Avatar
 
Join Date: Jan 2009
Location: Co. Durham
Posts: 2,291
Likes: 0
Received 0 Likes on 0 Posts
Default

First thing I would be checking is the maf, but there is no harm in removing the coil packs and checking them for cracks... fairly straight foward and easy job to do
Old 15 August 2011, 08:54 AM
  #7  
wotagr8bigchief
Scooby Regular
Thread Starter
iTrader: (1)
 
wotagr8bigchief's Avatar
 
Join Date: Jun 2011
Location: sussex
Posts: 316
Likes: 0
Received 0 Likes on 0 Posts
Default

Thanks for your imput guys, forgot to say CEL came on the first time I took it up to 3.5k revs and this is after fitting replacement engine. Otherwise engine runs sweet but does smell a little fuely.
Old 15 August 2011, 12:46 PM
  #8  
joz8968
Scooby Regular
iTrader: (13)
 
joz8968's Avatar
 
Join Date: Aug 2006
Location: Leicester
Posts: 23,761
Likes: 0
Received 8 Likes on 6 Posts
Default

Don't forget that even if there's no visible crack, one/some could still have a "nano crack/s" that could cause arcing still...

This happened to a couple of my v.1 coilpacks on my previous '93 WRX.
Old 18 August 2011, 11:57 PM
  #9  
wotagr8bigchief
Scooby Regular
Thread Starter
iTrader: (1)
 
wotagr8bigchief's Avatar
 
Join Date: Jun 2011
Location: sussex
Posts: 316
Likes: 0
Received 0 Likes on 0 Posts
Default

Thanks for your advice guys but I have sussed the problem, took it for a drive yesterday and realised I have no speedo. No speedo = no speed sensor = limp mode!! Will be fixing satruday.
Old 20 August 2011, 11:07 AM
  #10  
joz8968
Scooby Regular
iTrader: (13)
 
joz8968's Avatar
 
Join Date: Aug 2006
Location: Leicester
Posts: 23,761
Likes: 0
Received 8 Likes on 6 Posts
Default

Nice one! Not too much of ballache hassle/price-wise to fix.

So much better than having to buy/rotate coilpacks, eh?
Old 20 August 2011, 07:52 PM
  #11  
wotagr8bigchief
Scooby Regular
Thread Starter
iTrader: (1)
 
wotagr8bigchief's Avatar
 
Join Date: Jun 2011
Location: sussex
Posts: 316
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by joz8968
Nice one! Not too much of ballache hassle/price-wise to fix.

So much better than having to buy/rotate coilpacks, eh?
Definetly!
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
shorty87
Full Cars Breaking For Spares
19
22 December 2015 11:59 AM
PetrolHeadKid
Driving Dynamics
10
05 October 2015 05:19 PM
bluebullet29
General Technical
2
27 September 2015 07:52 PM
alex_00s
Drivetrain
2
26 September 2015 06:07 PM


Thread Tools
Search this Thread
Quick Reply: How to diagnose coilpack failure V1 WRX



All times are GMT +1. The time now is 12:15 PM.