Coil Packs dying?
24 April 2002, 10:29 AM
#93
Scooby Regular
Join Date: Nov 2001
Posts: 228
Likes: 0
Received 0 Likes
on
0 Posts
I just checked my coil packs last night as per Scott's tests mentioned earlier in this thread.
1. "CHECK IGNITION COIL" - for all 4 roughly 0.78-0.79
2. Couldn't get any measurement on resistance on the secondary coil check.
3. Couldn't get a measurment for the current with the 12v supply in series. I probably was getting this wrong however.
Wondering if anyone else has tried the latter 2 tests & the results they got if any as I'm still a bit suspicious as I still think there's a slight misfire...
- or maybe I'm beginning to believe in what's not there!
Would love to know what anyone else has got as results.
Regards
Johny.
p.s. Used the info from this thread http://www.scoobynet.co.uk/bbs/threa...threadid=85837 to check if each coil was firing, which they seemed okay.
Edited to add above
[Edited by jmca - 4/24/2002 10:32:13 AM]
1. "CHECK IGNITION COIL" - for all 4 roughly 0.78-0.79
2. Couldn't get any measurement on resistance on the secondary coil check.
3. Couldn't get a measurment for the current with the 12v supply in series. I probably was getting this wrong however.
Wondering if anyone else has tried the latter 2 tests & the results they got if any as I'm still a bit suspicious as I still think there's a slight misfire...
- or maybe I'm beginning to believe in what's not there!
Would love to know what anyone else has got as results.
Regards
Johny.
p.s. Used the info from this thread http://www.scoobynet.co.uk/bbs/threa...threadid=85837 to check if each coil was firing, which they seemed okay.
Edited to add above
[Edited by jmca - 4/24/2002 10:32:13 AM]
25 April 2002, 11:46 AM
#95
Scooby Regular
Join Date: Dec 2001
Posts: 3,418
Likes: 0
Received 0 Likes
on
0 Posts
I haven't I am afraid...
I was expecting my car to get worse hence I started this thread but it had got better now... probably on borrowed time...
Scott might have done.. I am sure he will notice this thread again soon.
JGM
I was expecting my car to get worse hence I started this thread but it had got better now... probably on borrowed time...
Scott might have done.. I am sure he will notice this thread again soon.
JGM
25 April 2002, 04:17 PM
#97
Scooby Regular
Join Date: Nov 2001
Posts: 228
Likes: 0
Received 0 Likes
on
0 Posts
Cheers for the reply guys!
As mentioned above in my previous post - I coudnt get any sort of reading at all for the secondary coil!!
Afraid I don't have new coils to test on but hopefully someone may have & give it a go 'cos it'd be interesting what they read when new!
Any takers?
Regards
Johny.
03 May 2002, 07:56 AM
#99
It shouldn't make a difference with the coil still attached to the car, although you have to bear in mind that the plug will be grounding to the block so it 'May' have some effect.
Best to try one removed, then inserted to see if there is a difference.
With respect to the alternative solution, the plug leads will just push onto the top of the plugs in the same manner they do for a Post MY97 with the single coil pack.
I guess the best lead set would actually be a Subaru My97 set from halfords. Although it's worth checking that they fit the individual Bosh Coils before purchase.
What Group buy....I Can't find it !!!!!
[Edited by Scott.T - 3/5/2002 8:15:41 AM]
Best to try one removed, then inserted to see if there is a difference.
With respect to the alternative solution, the plug leads will just push onto the top of the plugs in the same manner they do for a Post MY97 with the single coil pack.
I guess the best lead set would actually be a Subaru My97 set from halfords. Although it's worth checking that they fit the individual Bosh Coils before purchase.
What Group buy....I Can't find it !!!!!
[Edited by Scott.T - 3/5/2002 8:15:41 AM]
03 May 2002, 10:41 PM
#100
Scooby Regular
Join Date: Mar 2002
Location: London
Posts: 427
Likes: 0
Received 0 Likes
on
0 Posts
After going through the entire thread I have one question - those who have 2 bolts securing the coil packs, are the bolts on the corners of the flange or are they both along the center line of the pack? I have my bolts offset (on the corners) and am wondering if these packs are available in the UK cos I have an import. Otherwise I'm a bit stuffed - unless I go for the remote Bosch solution... help please....
17 May 2002, 08:37 AM
#101
Scooby Regular
Join Date: Dec 2001
Posts: 3,418
Likes: 0
Received 0 Likes
on
0 Posts
After starting this thread it is funny that mine still seem to be fine.. perhaps I shouldn't say that.
Last night I was having a good look around the engine bay, I can see the coil packs.. mine have a single bolt, so sorry I cannot help above.
Where are the spark plugs? I can see the fuel rails and the injectors and the coil packs and was beginning to wonder if they are under the coil packs as I cannot see anything even resembling a HT lead.. just call my dumb ***.
JGM
Last night I was having a good look around the engine bay, I can see the coil packs.. mine have a single bolt, so sorry I cannot help above.
Where are the spark plugs? I can see the fuel rails and the injectors and the coil packs and was beginning to wonder if they are under the coil packs as I cannot see anything even resembling a HT lead.. just call my dumb ***.
JGM
17 May 2002, 08:41 AM
#102
Undo the 12mm bolt holding the coil pack and pull.....
The spark plug is under it.
There are no HT leads on a Pre96 only 2-wires to each coil pack. This then connects direct to the Plug using a sprung contact.
[Edited by Scott.T - 5/17/2002 8:42:06 AM]
The spark plug is under it.
There are no HT leads on a Pre96 only 2-wires to each coil pack. This then connects direct to the Plug using a sprung contact.
[Edited by Scott.T - 5/17/2002 8:42:06 AM]
17 May 2002, 08:46 AM
#103
Scooby Regular
Join Date: Dec 2001
Posts: 3,418
Likes: 0
Received 0 Likes
on
0 Posts
Oh excellent so my assumption was right.
If you follow the two front coil packs up on either side you come to two black covers with oil pipes attached. One of which has the oil filler on. I have a slight oil leak from the both..
The look like the oil feeds for the cams or something like that, any idea?
Have you fitted the Prodrive chip now?
I have just fitted 17inch gold speedlines.. looks and handles so much better now.
JGM
If you follow the two front coil packs up on either side you come to two black covers with oil pipes attached. One of which has the oil filler on. I have a slight oil leak from the both..
The look like the oil feeds for the cams or something like that, any idea?
Have you fitted the Prodrive chip now?
I have just fitted 17inch gold speedlines.. looks and handles so much better now.
JGM
17 May 2002, 08:51 AM
#104
I know what you mean but I don't know what they are..
Yep, Prodrive chip is in and does improves things... Boosts to about 14psi and provides more torque at 3,000rpm.
Still wanna get about 16psi with my DIY FCD (which I havn't fitted yet).
Yep, Prodrive chip is in and does improves things... Boosts to about 14psi and provides more torque at 3,000rpm.
Still wanna get about 16psi with my DIY FCD (which I havn't fitted yet).
17 May 2002, 08:54 AM
#105
Scooby Regular
Join Date: Dec 2001
Posts: 3,418
Likes: 0
Received 0 Likes
on
0 Posts
I keep switching between wanting to up the boost or add a prodrive chip and then looking at the mileage and think that perhaps I should keep it standard.
About to click over the 100k.
JGM
[Edited by Jolly Green Monster 2 - 5/17/2002 8:57:02 AM]
About to click over the 100k.
JGM
[Edited by Jolly Green Monster 2 - 5/17/2002 8:57:02 AM]
17 May 2002, 08:58 AM
#107
Scooby Regular
Join Date: Dec 2001
Posts: 3,418
Likes: 0
Received 0 Likes
on
0 Posts
So my typing changed the meaning of the post..
I have editted it so hopefully it makes more sense and is now correct.
I don't have a prodrive chip but have always fancied one.
JGM
I have editted it so hopefully it makes more sense and is now correct.
I don't have a prodrive chip but have always fancied one.
JGM
18 May 2002, 10:15 PM
#109
Scooby Newbie
Join Date: Feb 2002
Location: St Albans
Posts: 16
Likes: 0
Received 0 Likes
on
0 Posts
Nutterkam
The coil packs with 2 bolts, as mentioned earlier for the Legacy have the bolts along the centreline. Looking at the top of the coil the flange is sort of diamond shaped with the bolts at the 2 narrow points, if you get what I mean.
Cheers
Steve
The coil packs with 2 bolts, as mentioned earlier for the Legacy have the bolts along the centreline. Looking at the top of the coil the flange is sort of diamond shaped with the bolts at the 2 narrow points, if you get what I mean.
Cheers
Steve
03 July 2002, 05:01 PM
#110
BANNED
Join Date: Jan 2001
Location: In my own little world
Posts: 9,644
Likes: 0
Received 0 Likes
on
0 Posts
Have just wipped out the Crankshaft one..Small siver "cokecan" thing covered in dirt at the bottom. has made no difference. will try Camshaft next. Just done this. Sprayed a bit of brake cleaner in just to help.
Scott T ,are you a Subaru mechanic??? You know one hell of a lot about them!!
Would I need to do a ECU reset to make any difference after cleaning these sensors???
Dosenoffer ( Means "Tin opener" in German!! Maybe he is a Subaru mechanic with a name like that!!) Spoke to me about
1. Does the car do it when it is cold... Coil packs tend to fail after they are realy hot.will try in the morning.
2. If I come of the throttle a fraction does it stop?? Well yes it does.
[Edited by Luke - 3/7/2002 5:19:36 PM]
Scott T ,are you a Subaru mechanic??? You know one hell of a lot about them!!
Would I need to do a ECU reset to make any difference after cleaning these sensors???
Dosenoffer ( Means "Tin opener" in German!! Maybe he is a Subaru mechanic with a name like that!!) Spoke to me about
1. Does the car do it when it is cold... Coil packs tend to fail after they are realy hot.will try in the morning.
2. If I come of the throttle a fraction does it stop?? Well yes it does.
[Edited by Luke - 3/7/2002 5:19:36 PM]
03 July 2002, 05:15 PM
#111
The Crank and Cam sensors normally show up as being problematic when starting.
Although they do play a major role with the timing advance/retard (crank Sensor) and Fuel Injector pulse (Cam Sensor).
No I am not a Subaru Mechanic, I've just had a flat spot / mis-fire at 4,700rpmm approx that I have been unsuccessfully trying to crack for 8 months.
Therefore have got to know 1 or 2 things about how some things work and where they are.
Both Barratts Motorsport and PE have been unsuccesful in solving it too, along with my own part substitution of the following :
ECU - Borrowed
Lambda Sensor - New
Crank Sensor - New
MAF - Borrowed
Cam Sensor - Borrowed
Ignition Module - Borrowed
Boost Control Solenoid - Borrowed
Spark Plugs - New and Re-gapped several times
Coil Packs - Borrowed, although in worse looking condition than mine
Fuel Filter - New
Fuel Regulator - 2nd Hand
Earthing Mod - Done
Dump Valve - Removed/Blanked
Map Sensor - Borrowed ...... Edited cause I forgot
Will the 'Brown' thing have anything to do with it ?
[Edited by Scott.T - 3/7/2002 5:26:33 PM]
Although they do play a major role with the timing advance/retard (crank Sensor) and Fuel Injector pulse (Cam Sensor).
No I am not a Subaru Mechanic, I've just had a flat spot / mis-fire at 4,700rpmm approx that I have been unsuccessfully trying to crack for 8 months.
Therefore have got to know 1 or 2 things about how some things work and where they are.
Both Barratts Motorsport and PE have been unsuccesful in solving it too, along with my own part substitution of the following :
ECU - Borrowed
Lambda Sensor - New
Crank Sensor - New
MAF - Borrowed
Cam Sensor - Borrowed
Ignition Module - Borrowed
Boost Control Solenoid - Borrowed
Spark Plugs - New and Re-gapped several times
Coil Packs - Borrowed, although in worse looking condition than mine
Fuel Filter - New
Fuel Regulator - 2nd Hand
Earthing Mod - Done
Dump Valve - Removed/Blanked
Map Sensor - Borrowed ...... Edited cause I forgot
Will the 'Brown' thing have anything to do with it ?
[Edited by Scott.T - 3/7/2002 5:26:33 PM]
03 September 2002, 02:17 PM
#112
BANNED
Join Date: Jan 2001
Location: In my own little world
Posts: 9,644
Likes: 0
Received 0 Likes
on
0 Posts
Ok listen up!!
First a very big thanks to a big guy Mr Dosenoffner (Glen)!!
After a quick breakfast I popped down to south London. A realy nice part!!!!
Out came the coils and sparks... There was the problem. SPARK GAP. The end of the Nipple thingy!! had worn down a lot. So after seting to .7 (!!!!) and testing coils which are perfect. The whole lot got fitted back.... All this time my hands are clean !!!!!! Glen was well stuck in!! Quick test drive. What a difference.
Scott T ,many thanks for all you help. It was good to have your thoughts.
JGM. The coils that Glen has WOULD NOT have fitted my car (Legacy93). Mine have 2 x bolts with 10mm heads. His had one bolt 12mm. But could easly be made to fit.Give him a shout if you need them to test yours.
What a great end to my week...
Thanks again Glen ( You have to see what he has at the bottom of his Garden!!!!)
Group buy Spark plugs anyone!!
[Edited by Luke - 3/9/2002 8:32:33 PM]
First a very big thanks to a big guy Mr Dosenoffner (Glen)!!
After a quick breakfast I popped down to south London. A realy nice part!!!!
Out came the coils and sparks... There was the problem. SPARK GAP. The end of the Nipple thingy!! had worn down a lot. So after seting to .7 (!!!!) and testing coils which are perfect. The whole lot got fitted back.... All this time my hands are clean !!!!!! Glen was well stuck in!! Quick test drive. What a difference.
Scott T ,many thanks for all you help. It was good to have your thoughts.
JGM. The coils that Glen has WOULD NOT have fitted my car (Legacy93). Mine have 2 x bolts with 10mm heads. His had one bolt 12mm. But could easly be made to fit.Give him a shout if you need them to test yours.
What a great end to my week...
Thanks again Glen ( You have to see what he has at the bottom of his Garden!!!!)
Group buy Spark plugs anyone!!
[Edited by Luke - 3/9/2002 8:32:33 PM]
10 October 2002, 09:26 AM
#117
Scooby Regular
Join Date: Feb 2002
Posts: 2,005
Likes: 0
Received 0 Likes
on
0 Posts
Link do a similar product which costs very little. You can use it on any voltage producing sensor (MAP, Lambda, etc...). You can tie it in to boost and offset the voltage signal sent. This is not the PossumLink ECU. This is a seperate unit which retails around £35-£50.
11 May 2003, 04:34 PM
#120
Scooby Regular
Join Date: Jul 1999
Posts: 182
Likes: 0
Received 0 Likes
on
0 Posts
Is it possible to test the twin coil pack module with built in ignitor on a 99 sti using a multi meter? All the things I've seen refer to the four seperate coil packs or the twin coil pack module with a seperate ignitor.
I got 12.06K ohms between 1 and 2 and 12.13K ohms between 3 and 4 on the secondary coils (ie the connections for spark plugs 1-2 and 3-4). I couldn't get anything between any of the other pins. Is this coil module ok? Anyone else get similar figures for theirs?
My sti v does not run with the smoothness it once did especially at high revs and low down torque is lacking. It feels like bad ignition leads but they were replaced with magnecor kv85's and the plugs have been replaced too. It also occasionally doesn't like to start until you press the accelerator - it just cranks away making no attempt to get going but I'm wondering if this is an aside to the smoothness/torque issue. Maf, O2, and crank sensors have been replaced at different times. I'm sure the garage think I'm imagining it. It made about 275bhp 250ftlb last time on the rolling road and it has a scoobysport back box and magnex silenced mid section with the standard dp. I've been all round the houses with this issue and don't really want to throw more money at it.
I got 12.06K ohms between 1 and 2 and 12.13K ohms between 3 and 4 on the secondary coils (ie the connections for spark plugs 1-2 and 3-4). I couldn't get anything between any of the other pins. Is this coil module ok? Anyone else get similar figures for theirs?
My sti v does not run with the smoothness it once did especially at high revs and low down torque is lacking. It feels like bad ignition leads but they were replaced with magnecor kv85's and the plugs have been replaced too. It also occasionally doesn't like to start until you press the accelerator - it just cranks away making no attempt to get going but I'm wondering if this is an aside to the smoothness/torque issue. Maf, O2, and crank sensors have been replaced at different times. I'm sure the garage think I'm imagining it. It made about 275bhp 250ftlb last time on the rolling road and it has a scoobysport back box and magnex silenced mid section with the standard dp. I've been all round the houses with this issue and don't really want to throw more money at it.