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Author Topic: eml light  (Read 2181 times)

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lawdman

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eml light
« on: 09 January 2009, 23:18:46 »
hi guys. my eml comes on first thing in the morning for about 2 mins, if i start and go. if i leave the car to warm up and then go it doesnt come on. however it has now started coming on even after being warm, especially if at low revs say on the motorway. even then it goes off after about 20 seconds. i read something about lambda sensors??? any ideas cheers
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hotel21

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eml light
« Reply #1 on: 09 January 2009, 23:24:13 »
[movedhere] Forum Problems [move by] hotel21.
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RobG

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Re: eml light
« Reply #2 on: 09 January 2009, 23:30:28 »
Quote
hi guys. my eml comes on first thing in the morning for about 2 mins, if i start and go. if i leave the car to warm up and then go it doesnt come on. however it has now started coming on even after being warm, especially if at low revs say on the motorway. even then it goes off after about 20 seconds. i read something about lambda sensors??? any ideas cheers
Read this http://www.omegaowners.com/forum/YaBB.pl?num=1189022687  Do the test, then post up the codes :y
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lawdman

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Re: eml light
« Reply #3 on: 11 January 2009, 22:50:20 »
ok did the paperclip test and got

12
16
31

am i right in saying this is a knock sensor fault? if so what is it where is it and how much to fix??

cheers
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feeutfo

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Re: eml light
« Reply #4 on: 12 January 2009, 03:00:39 »
Quote
hi guys. my eml comes on first thing in the morning for about 2 mins, if i start and go. if i leave the car to warm up and then go it doesnt come on. however it has now started coming on even after being warm, especially if at low revs say on the motorway. even then it goes off after about 20 seconds. i read something about lambda sensors??? any ideas cheers
Even in the manual it says to drive off straight away rather than wait for the car to warm up. Try the paper clip test and post up the codes.http://www.omegaowners.com/forum/YaBB.pl?num=1189022687
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lawdman

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Re: eml light
« Reply #5 on: 12 January 2009, 21:23:24 »
hmm yeh like i said i did the paperclip test.
12 16 31

am i right in saying this is a knock sensor fault? if so what is it where is it and how much to fix??

cheers
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iainb

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Re: eml light
« Reply #6 on: 12 January 2009, 21:38:55 »
On the V6 you have 2 knock sensors
Check to see if the wires are trapped
if you have had work done recently to cam covers or cam belt.
The wire runs close to the front of the engine. On the right bank check from the EGR down
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Marks DTM Calib

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Re: eml light
« Reply #7 on: 12 January 2009, 21:40:19 »
16 is knock sensor 1 which is the drivers side one....check the wire has not been caught in the aux belt following a (poor) cambelt change
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lawdman

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Re: eml light
« Reply #8 on: 12 January 2009, 22:15:40 »
dont suppose anyone as got any pics of what im looking for?
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Marks DTM Calib

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Re: eml light
« Reply #9 on: 12 January 2009, 22:20:36 »
Look at the front of the engine where the aux belt runs.

Below the throttles you will see a plastic tray which has cablse coming out of it.

Near the middle of the tray (slightly left of centre), you will see a single wire that is part of a connetor which is also clipped to the tray.....this is the knock sensor wire in question
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lawdman

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Re: eml light
« Reply #10 on: 12 January 2009, 22:26:50 »
what does the knock sensor do?
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RobG

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Re: eml light
« Reply #11 on: 12 January 2009, 22:30:06 »
Controls ignition advance and retard to prevent knocking (pinking) :y
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lawdman

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Re: eml light
« Reply #12 on: 12 January 2009, 22:52:11 »
it means nothing to me but thanks
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RobG

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Re: eml light
« Reply #13 on: 12 January 2009, 23:16:29 »
The "knock sensor" picks up when the engine is starting to "pink", in simple terms the ignition is too far advanced for the load on the engine. The ecu receives a signal from this sensor and retards the ignition to suit.

It is an "active" signal since the ecu is nearly always trying to run the timing as advanced as possible.  :y
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lawdman

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Re: eml light
« Reply #14 on: 31 January 2009, 17:59:00 »
had a look but cant see any wires trapped, though not really got a clue what im looking at. can anyone recommend a garagae round manchester area good on these cars and anyone got  a clue on price i should be looking at to get it sorted

cheers
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