on dubs Member 132 Member For: 16y 5m 7d Gender: Male Location: Gawler, SA Posted 07/09/10 10:33 PM Share Posted 07/09/10 10:33 PM (edited) I've had some trouble with my BF suddenly having a missfire while driving, it has become more and more regular over time.I have replaced the spark plugs and the ignition coils, the problem is still there although it went away for a few days after.Is there a rev limiter in place that cuts spark?If I accelerate full throttle I get a very harsh surge-like effect that instantly cuts power and the car starts missfiring after that at low rpm.A couple of revs usaully sorts it.ECU is now showing a DTC. P0353 Ignition coil cylinder 3 Circuit failure (COP-B (or 3))Damaged or defective wiring or connectors. Defective power supply Defective switching signal from PCM.As I've just put in brand new WeaponX coil packs I'm not thinking I have a fault there. The problem existed before putting them in.No obvious signs of faults with the clips or wiring under the coil cover either.Where can I find the PCM? Edited 07/09/10 10:34 PM by on dubs Link to comment Share on other sites More sharing options...
Phooned Member 72 Member For: 17y 7m 27d Gender: Male Location: SE Melbourne Posted 08/09/10 03:57 AM Share Posted 08/09/10 03:57 AM Where can I find the PCM?G'Day on dubs,My mate had a similar problem and it turned out to be one of the wires going to the PCM. The insulation had come off the wire and it ended up grounding against the metal. He ended up having to replace the PCM along with soldering and heat shrinking the wire. Hope the problem is not as severe in your case.The PCM is the silver rectangular box in the engine bay, right next to the ABS module. I have circled it in the picture below.Cheers,Phooned Link to comment Share on other sites More sharing options...
tab Sucker Moderating Team 32,303 Member For: 20y 9m 10d Gender: Male Location: Brisbane Posted 08/09/10 04:44 AM Share Posted 08/09/10 04:44 AM That's the ECU...PCM is inside the cabin Link to comment Share on other sites More sharing options...
Ralph Wiggum Moar Powar Babeh Lifetime Members 19,323 Member For: 19y 4m 12d Gender: Male Location: Perth Posted 08/09/10 05:52 AM Share Posted 08/09/10 05:52 AM @TAB UMMMM..............No it ain't, thats the PCM not the ECU............BCM is in the car, there is no "ECU" as such...... Link to comment Share on other sites More sharing options...
tab Sucker Moderating Team 32,303 Member For: 20y 9m 10d Gender: Male Location: Brisbane Posted 08/09/10 05:53 AM Share Posted 08/09/10 05:53 AM Really? Always thought the PCM was mounted under the ICC or passenger footwell or something? Link to comment Share on other sites More sharing options...
Ralph Wiggum Moar Powar Babeh Lifetime Members 19,323 Member For: 19y 4m 12d Gender: Male Location: Perth Posted 08/09/10 06:00 AM Share Posted 08/09/10 06:00 AM Under the ICC is the Body Control Module, The one in the engine bay is Powertrain Control ModuleNo ecu/pcm/bcm/m&m's in the footwells that i know of? Link to comment Share on other sites More sharing options...
senna_T Forged Member Lifetime Members 15,818 Member For: 17y 11m 27d Gender: Male Location: SW Sydney Posted 08/09/10 06:15 AM Share Posted 08/09/10 06:15 AM He's talking about that one that has the wire you cut so your car goes faster... Link to comment Share on other sites More sharing options...
Ralph Wiggum Moar Powar Babeh Lifetime Members 19,323 Member For: 19y 4m 12d Gender: Male Location: Perth Posted 08/09/10 06:23 AM Share Posted 08/09/10 06:23 AM 1st rule of Ex Cop Spec XR6T secret mods, You do not talk about Cop spec XR6T's secret mods.....() Another thread successfully Hijacked by the moderator dept....... Link to comment Share on other sites More sharing options...
Dirty32 Legendary member!! Donating Members 1,739 Member For: 18y 13d Gender: Male Location: Dianella, West Oz Posted 08/09/10 06:53 AM Share Posted 08/09/10 06:53 AM He's talking about that one that has the wire you cut so your car goes faster...Iv heard a rumour that this boosts fuel supply, remaps the ECU and cuts the 0 - 100 times by 1 second!! Link to comment Share on other sites More sharing options...
on dubs Member 132 Member For: 16y 5m 7d Gender: Male Location: Gawler, SA Posted 08/09/10 10:51 AM Author Share Posted 08/09/10 10:51 AM haha good one kentsBit confusing about the PCM as that silver box is always refered to as the ECU. Thanks for the info phooned and hiddeous. very interesting, will unbolt and have a look at the wiring. Link to comment Share on other sites More sharing options...
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