Welcome to 911UK
The only place for Porsche, 911uk is the definitive enthusiast and resource site for the Porsche 911.
Registration is fast, simple and absolutely free, so join up today for full access to the site and benefit from latest member offers.

Porsche Classifieds
Sell Your Porsche on 911uk
Create a Free Classified Advert
Search Ads
Classified Adverts FAQ
Trade Classified Information
Buyer & Seller Fraud Protection
Consumer Rights Act
Pre Purchase Inspection (PPI)
Porsche Car Sourcing
Porsche Cars Wanted
Official Porsche Centre Reviews
Model
Stock
Porsche 911
992 : 2019- 1
991 : 2011-2019 0
997 : 2004-2012 1
996 : 1997-2005 31
993 : 1993-1998 5
964 : 1989-1993 2
Carrera 3.2 : 1983-1989 3
Carrera SC : 1977-1983 1
930 Turbo : 1975-1989 0
Early 911 : 1964-1977 0
Porsche Other Models
Classic : 1950-1965 0
Boxster : 1997- 22
Cayman : 2005- 14
Cayenne : 2003- 2
Macan : 2014- 2
Panamera : 2009- 1
912-914-924-928-944-968 1
959 - CarreraGT - RaceCar 0
Car Parts For Sale & Wanted
Other Items For Sale & Wanted
Wheels Tyres For Sale & Wanted
Number Plates For Sale Wanted

Porsche Services
Porsche Body Shop Repair
Paint Protection & Wrapping
Porsche Classic Insurance
Porsche Classic Parts
Porsche Classic Restoration
Porsche Design Collection
Porsche Engine Gearbox Rebuild
Porsche Heritage & History
Porsche News
Porsche Picture Gallery
Win a New Porsche 911

Porsche Parts
Body Parts, Body Styling
Brakes, Clearance
Electrical, Exhausts
Engine Cooling, Engine Electrical
Engine Rebuild, Heating Cooling
Interior Incar, Lighting
Rubber Seals, Service Parts
Steering, Suspension
Transmission, Workshop Tools
Early 911, 911 - 930, 928 - 968
964 - 993, 996 - 997, Boxster
Cayman, Cayenne, Panamera

Porsche Model Range
911 [992] 2018-Current
Porsche 911 [992]
911 [991] 2011-2019
Porsche 911 [991]
911 [997] 2004-2012
Porsche 911 [997]
911 [GT] GT1-GT2-GT3
Porsche 911 [GT]
911 [996] 1997-2005
Porsche 911 [996]
911 [993] 1993-1998
Porsche 911 [993]
911 [RS] RS-RSR
Porsche 911 [RS]
911 [964] 1989-1993
Porsche 911 [964]
911 3.2 1983-1989
Porsche 911 3.2 Carrera
911 SC 1977-1983
Porsche 911 SC
911 [Early] 1964-1977
Porsche 911 [Early]
Boxster & Cayman
Porsche Boxster & Cayman
Cayenne & Panamera
Porsche Cayenne & Panamera

911uk Site Partners

Post new topic   Reply to topic
Author Message
markv8
Trainee


Joined: 27 May 2015
Posts: 96



PostPosted: Fri Jul 19, 2019 5:00 pm    Post subject: just cut out Reply with quote

hi all ,
today my 2002 targa just cut out , recovered back to my lock up and tested fuel pump ok I found C2
30A
IGNITION, INJECTION, HEATER OXYGEN SENSORS fuse blown and just keeps blowing , any one had this before , before I get the megger out rgds mark
 
  
View user's profile Send private message
   
markv8
Trainee


Joined: 27 May 2015
Posts: 96



PostPosted: Fri Jul 19, 2019 6:56 pm    Post subject: just cut out Reply with quote

quick update , no mechanical issues just loads of fault codes p0300 - p0301 -p0305 -p0264 p0261 - p0273 - p0037 - p0270 - p0276 - p0057 - p0267 -
and the blowing fuse , any pointers on what would cut the motor rgds Mark
 
  
View user's profile Send private message
   
deMort
Dijon


Joined: 21 Mar 2015
Posts: 7004
Location: Brighton


PostPosted: Fri Jul 19, 2019 7:55 pm    Post subject: Reply with quote

You have a lot going on there with misfires and the lambda heater fault .. i need to spend a bit of time researching this .. a wiring fault is the most obvious atm but it will take me a bit of time to have a go on this problem .

its late now but i'll have time tomorrow afternoon to research this so bear with me .

or perhaps someone else will answer in the meantime Smile

either way i'll look in detail tomorrow .
_________________
.

My Daughter's Crowdfunding has hit the target see Here

Thank you all so Very much .



Mechanic

7pm - 9pm

Now At An Indy.
 
  
View user's profile Send private message
   
markv8
Trainee


Joined: 27 May 2015
Posts: 96



PostPosted: Fri Jul 19, 2019 8:05 pm    Post subject: just cut out Reply with quote

Thanks for your reply ,car ran fine up until today , just had new cps fitted no mice or rats in lock up , just lots of codes thanks again for your time rgds Mark
 
  
View user's profile Send private message
   
infrasilver
Fast & Furious
Fast & Furious


Joined: 04 Oct 2010
Posts: 8329
Location: East Midlands

2001 Porsche 996 Targa

PostPosted: Fri Jul 19, 2019 8:55 pm    Post subject: Reply with quote

It would be worth checking continuity between the engine wiring loom plugs and the CPS connector, see if you are getting any voltage to the plug, IIRC it should be 5 volts?

I had a broken wire that started to get worse until one day it just failed, a new CPS didn't fix it and it was traced to a broken wire going across the engine which had to have a new wire soldered in.
_________________
http://euroroadtripper.blogspot.co.uk/

 
  
View user's profile Send private message Visit poster's website
   
markv8
Trainee


Joined: 27 May 2015
Posts: 96



PostPosted: Fri Jul 19, 2019 9:05 pm    Post subject: just cut out Reply with quote

thanks for replies , going to get car in the air and have a look , I think half the codes just logged as it failed it went down on some cylinders and felt rough then check engine light then died , I checked fuel pump when I got it back that's ok more tomorrow with demorts findings should have some where to start , quite interesting actually , I deal with MVB faults all day at work now I have one maybe,, anyway the outcome will be posted on here so that if anyone else suffers the same it might be able to help rgds Mark
 
  
View user's profile Send private message
   
markv8
Trainee


Joined: 27 May 2015
Posts: 96



PostPosted: Sat Jul 20, 2019 10:04 am    Post subject: Just cut out Reply with quote

My son senae of humour made me laugh
 



IMG-20190720-WA0000.jpg
 Description:
 Filesize:  93.02 KB
 Viewed:  1246 Time(s)

IMG-20190720-WA0000.jpg


  
View user's profile Send private message
   
deMort
Dijon


Joined: 21 Mar 2015
Posts: 7004
Location: Brighton


PostPosted: Sat Jul 20, 2019 4:47 pm    Post subject: Reply with quote

I've just started looking at this .. interesting .. give me an hour i think as this will be a long reply .


EDIT .. quick question .. fuse blows on crank or ign on ??
_________________
.

My Daughter's Crowdfunding has hit the target see Here

Thank you all so Very much .



Mechanic

7pm - 9pm

Now At An Indy.
 
  
View user's profile Send private message
   
markv8
Trainee


Joined: 27 May 2015
Posts: 96



PostPosted: Sat Jul 20, 2019 5:07 pm    Post subject: Reply with quote

Ignition off fuse blows key in
 
  
View user's profile Send private message
   
markv8
Trainee


Joined: 27 May 2015
Posts: 96



PostPosted: Sat Jul 20, 2019 5:10 pm    Post subject: Reply with quote

Thanks for taking time out to look into this i will wait for your findings . My next step was to start disconnecting wiring plugs then check fuse
 
  
View user's profile Send private message
   
deMort
Dijon


Joined: 21 Mar 2015
Posts: 7004
Location: Brighton


PostPosted: Sat Jul 20, 2019 5:16 pm    Post subject: Reply with quote

Ok then .. long post i feel ..

Fault codes
P0300 / general misfire seen
P0301 / Misfire on cyl 1
P0305 / Misfire on cyl 5
P0264 / Fuel injector cyl 2 below limit
p0261 / Fuel injector cyl 1 below limit
p0273 / Fuel injector cyl 5 below limit
p0037 / Ho2s heater circuit low .. no voltage i expect.
p0270 / Fuel injector cyl 4 below limit
p0267 / Fuel injector cyl 3 below limit
p0057 / Ho2s heater circuit low .. again no voltage i expect .

The only fuel injector not listed is no. 6 !

Basically these will all be consistent with the fuse C2 blowing other than the first 2 .. misfires .. strange we didnt get more misfires but i'm guessing there was a limit to what the dme could see as it died .

What could cause it though ...

well we have a fuse that keeps blowing that powers the coils , the injectors and the heater circuit of the lambda sensors .

Any one of these could have an internal short circuit to earth and cause it as could the feed wire to anyone of these be shorted out .

A visual check of each is needed and possibly unplugging every item .. at that point it's pining out all the wiring for the power side to each item for a short .. you would have to unplug Every item to do this test or you will just get a back feed via one of the other items .

relay pos 2 term 87 to each component .



I have a slight hunch .. or at least somewhere for you to start ..

It's a Targa .. let's say i know them rather well .. they leak and one main place they leak is at the rear drains .. this works its way forward soaking the carpet as it goes ..

The Dme and indeed the relay support is in the line of fire here .. fold down the rear seats ..

Pull out the carpet behind them .. pull in the center and up .. it pushes under the side quarter panels ..

Undo the x5 10 mm nuts and pull up the ally panels .

You know have access to the dme and the relay panel .. any water damage ?

The relay that powers everything is pos 2 in that board .. if you pull that , replace the fuse then you can see if it blows .. if not then we are onto some item or wiring engine bay side shorting out as first mentioned above .

also .. unrelated to a degree but look under the passenger seat .. alarm control unit is there .. make sure it's all nice and dry .

What info do you have to fault find .. diagrams etc ?

Pm me what you might need and ill see if i can find anything .

Time for a beer methinks .. fingers hurt after this post Razz
_________________
.

My Daughter's Crowdfunding has hit the target see Here

Thank you all so Very much .



Mechanic

7pm - 9pm

Now At An Indy.
 
  
View user's profile Send private message
   
markv8
Trainee


Joined: 27 May 2015
Posts: 96



PostPosted: Sat Jul 20, 2019 5:24 pm    Post subject: Reply with quote

Thanks for that car is bone dry not a drop as its garaged rats or mice not here wiring diagram would help if you have one 2002 3.6 targa will start the testing tomorrow and let you know rgds mark
 
  
View user's profile Send private message
   
deMort
Dijon


Joined: 21 Mar 2015
Posts: 7004
Location: Brighton


PostPosted: Sat Jul 20, 2019 5:30 pm    Post subject: Reply with quote

Pm me an email addy for you please .

just to add you can download the manual from here ..

http://911uk.com/viewtopic.php?t=83491

It's the slightly earlier car but it will be sufficient for most things .

My post on Targa problems if you want to scare yourself some more !

http://911uk.com/viewtopic.php?t=116450
_________________
.

My Daughter's Crowdfunding has hit the target see Here

Thank you all so Very much .



Mechanic

7pm - 9pm

Now At An Indy.
 
  
View user's profile Send private message
   
markv8
Trainee


Joined: 27 May 2015
Posts: 96



PostPosted: Mon Jul 22, 2019 12:04 pm    Post subject: just cut out Reply with quote

Firstly thanks to DeMort for taking time out to have a look into my cars problems , So i removed the air box and disconected the 02 sensors first , they were the easiest , the fuse still blew , knowing that fuse C2 protects ignition, 02 heaters , injectors , I made my way underneath to the coil packs , removed the heat shields and on inspection found two cases cracked and one coil pack melted This would coincide with the misfire reported on the DME I removed the plug on the coil and replaced the fuse and it held so I fired it up and hey presto 5 cylinders , so I need 6 new coil packs , not to bad a job just fiddly ,so who,s doing the best deal on coil packs ,, rgds Mark
 
  
View user's profile Send private message
   
sunburn
Newbie


Joined: 05 May 2018
Posts: 5



PostPosted: Mon Jul 22, 2019 1:38 pm    Post subject: Reply with quote

£23.74 each inc vat (BERU) carparts4less code MID20 Very Happy
 
  
View user's profile Send private message
   
deMort
Dijon


Joined: 21 Mar 2015
Posts: 7004
Location: Brighton


PostPosted: Mon Jul 22, 2019 6:18 pm    Post subject: Reply with quote

The melted coil pack will be the problem one .. coils often crack and misfire when wet .. they don't do this though .. trust me !!!

Not Surefire coils fitted by any chance ??

2 people here have had similar to this with these coils going tits up !!
_________________
.

My Daughter's Crowdfunding has hit the target see Here

Thank you all so Very much .



Mechanic

7pm - 9pm

Now At An Indy.
 
  
View user's profile Send private message
   
markv8
Trainee


Joined: 27 May 2015
Posts: 96



PostPosted: Mon Jul 22, 2019 6:28 pm    Post subject: just cut out Reply with quote

No Mate they were Beru pt no 997.602.102.00 , i had some other bits to order as well so Design 911 got the full order and i will have a fit up this week then back on the road just got the AOS to do during winter months rgds Mark
 
  
View user's profile Send private message
   
deMort
Dijon


Joined: 21 Mar 2015
Posts: 7004
Location: Brighton


PostPosted: Mon Jul 22, 2019 6:30 pm    Post subject: Reply with quote

very strange .. i've not seen not even heard of this in 16 years on porsche with beru coils .

just unlucky i guess Sad
_________________
.

My Daughter's Crowdfunding has hit the target see Here

Thank you all so Very much .



Mechanic

7pm - 9pm

Now At An Indy.
 
  
View user's profile Send private message
   
markv8
Trainee


Joined: 27 May 2015
Posts: 96



PostPosted: Mon Jul 22, 2019 6:33 pm    Post subject: just cut out Reply with quote

here you go
 



coil.jpg
 Description:
 Filesize:  1.45 MB
 Viewed:  864 Time(s)

coil.jpg


  
View user's profile Send private message
   
markv8
Trainee


Joined: 27 May 2015
Posts: 96



PostPosted: Mon Jul 22, 2019 6:38 pm    Post subject: just cut out Reply with quote

just got to be age , ive had the car 4.5 years covered 23,000 miles all good with just normal serviceing and tyres , and they have been grin factor miles but never thought of coils , it had plugs just before I brought it , going to change them again when the coils get here
 
  
View user's profile Send private message
   
Display posts from previous:   
Post new topic   Reply to topic   All times are GMT - 12 Hours
Goto page 1, 2  Next
Page 1 of 2

 
Jump to:  

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You can attach files in this forum
You can download files in this forum
You cannot post calendar events in this forum