Omega Owners Forum - paper clip results are in

dragon33 Newbie Offline Posts: 30 swansea Gender:	paper clip results are in 15. Jan 2007 at 18:35 omega v6 2.5i m reg 1. 31 2. 17 3. 73 can anyone tell me what the likely faults are
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STMO123 Ex Member Gender:	Re: paper clip results are in Reply #1 - 15. Jan 2007 at 18:47 The codes are here http://www.topbuzz.co.uk/info/fault_codes/fault_codes.htm
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tunnie Over Active Poster Offline Posts: 22520 London, W3 Gender: Drives: 2.2 CD (LPG'd) & BMW R1200 GS	Re: paper clip results are in Reply #2 - 15. Jan 2007 at 18:54 don't worry about 31, you always get that when then engine is not running
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TheBoy

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Re: paper clip results are in
Reply #3 - 15. Jan 2007 at 19:01

dragon33 wrote on 15. Jan 2007 at 18:35:

omega v6 2.5i m reg

1. 31
2. 17
3. 73

can anyone tell me what the likely faults are

IIRC, 17 is a knock sensor (won't stop it from starting, but may feel flat when going), 73 is the MAF, and the 31 is crank sensor (no rpm).

The 31 is non conclusive if can not running, as it means the ecu has not yet seen the rpm signal (so normal if car won't run, but may mean crank sensor fubar).

Never tried this, but should give a better idea; put the paerclip in, try cranking engine for 5 secs, then without turning ignition from II reread codes. If 31 still there I would suspect crank sensor.

Crank sensor is the only v6 sensor that hasn't got a limp mode...

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TheBoy Administrator Offline TBE has an MOT! Posts: 64817 Brackley, Northants Gender: Drives: 98 MV6, 03 Elite, 00 25, 89 ZX10	Re: paper clip results are in Reply #4 - 15. Jan 2007 at 19:02 tunnie wrote on 15. Jan 2007 at 18:54: don't worry about 31, you always get that when then engine is not running Doesn't mean it ain't faulty... ...I am worried about the 31
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dragon33 Newbie Offline Posts: 30 swansea Gender:	Re: paper clip results are in Reply #5 - 15. Jan 2007 at 19:10 so what are the likely causes and how do i rectify them bearing in mind that eml is constantly on
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TheBoy Administrator Offline TBE has an MOT! Posts: 64817 Brackley, Northants Gender: Drives: 98 MV6, 03 Elite, 00 25, 89 ZX10	Re: paper clip results are in Reply #6 - 15. Jan 2007 at 19:12 dragon33 wrote on 15. Jan 2007 at 19:10: so what are the likely causes and how do i rectify them bearing in mind that eml is constantly on Try my earlier suggestion of cranking it, then rereading codes without turning ignition off...
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dragon33 Newbie Offline Posts: 30 swansea Gender:	Re: paper clip results are in Reply #7 - 15. Jan 2007 at 19:24 tried cranking it for 5 secs same result. code disappears when engine running just 31 and 73.
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dragon33 Newbie Offline Posts: 30 swansea Gender:	Re: paper clip results are in Reply #8 - 15. Jan 2007 at 19:25 sorry 17 and 73
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TheBoy Administrator Offline TBE has an MOT! Posts: 64817 Brackley, Northants Gender: Drives: 98 MV6, 03 Elite, 00 25, 89 ZX10	Re: paper clip results are in Reply #9 - 15. Jan 2007 at 19:29 Sorry, I thought engine wouldn't start? What was problem?
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dragon33

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Re: paper clip results are in
Reply #10 - 15. Jan 2007 at 19:35

engine wouldnt start on saturday after i had cleaned spark plugs below idle control valve,after stripping loom in casing and checking for any open circuit connections the engine fired up on sunday morning and was ok today back and fore to work apart from misfiring mainly at low speeds or under load,what does the knock sensor and maf relate too as far as likely problems

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TheBoy

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Re: paper clip results are in
Reply #11 - 15. Jan 2007 at 19:39

dragon33 wrote on 15. Jan 2007 at 19:35:

engine wouldnt start on saturday after i had cleaned spark plugs below idle control valve,after stripping loom in casing and checking for any open circuit connections the engine fired up on sunday morning and was ok today back and fore to work apart from misfiring mainly at low speeds or under load,what does the knock sensor and maf relate too as far as likely problems

Right, it all becomes clear Wink

17 = Knock sensor 2 = passenger side.

The knock sensor plugs into loom in the plastic cable tray that sits above passenger side plugs). It then disappears down near dipstick tube.

Check for damage along its length (often damaged if it gets caught under cam cover), and that its plugged in...

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TheBoy Administrator Offline TBE has an MOT! Posts: 64817 Brackley, Northants Gender: Drives: 98 MV6, 03 Elite, 00 25, 89 ZX10	Re: paper clip results are in Reply #12 - 15. Jan 2007 at 19:41 The knock sensor, btw, advances ignition until 'knocking' occurs. If ECU detects sensor fault, it retards ignition, and it will run like a pig, esp above about 2k rpm unde rload...
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dragon33 Newbie Offline Posts: 30 swansea Gender:	Re: paper clip results are in Reply #13 - 15. Jan 2007 at 19:43 excellent it is plugged in but i did notice some black tape around it,also the other fault maf.i have noticed like an exhaust blowing sound coming from engine bay,somebody on here said it could be egr valve,or manifold gaskets,would that cause the maf code.
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TheBoy

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Drives: 98 MV6, 03 Elite, 00 25, 89 ZX10

Re: paper clip results are in
Reply #14 - 15. Jan 2007 at 19:46

dragon33 wrote on 15. Jan 2007 at 19:43:

excellent it is plugged in but i did notice some black tape around it,also the other fault maf.i have noticed like an exhaust blowing sound coming from engine bay,somebody on here said it could be egr valve,or manifold gaskets,would that cause the maf code.

Ignore MAF code until knock sensor fixed... ...MAF often give spurious codes when other faults present. However, a blowing exhaust can cause a MAF code.... ...but I would see what happens when knock sensor fixed...

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