Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: markey mark on 11 February 2009, 10:43:19

Title: fault codes help please
Post by: markey mark on 11 February 2009, 10:43:19
just done paperclip test on mine after breaking down last nite and im getting codes
73 maf voltage
72 ????
31 no rpm signal

was expecting crank sensor but no ! just cut out coming up to a roundabout and would not go again any ideas on the 72 code  :(
Title: Re: fault codes help please
Post by: RobG on 11 February 2009, 12:08:37
Quote
just done paperclip test on mine after breaking down last nite and im getting codes
73 maf voltage
72 ????
31 no rpm signal

was expecting crank sensor but no ! just cut out coming up to a roundabout and would not go again any ideas on the 72 code  :(
72 Amplifier (Direct Ignition System (DIS)) control signal (A+B) Lead interruption, open circuit  :-?
Title: Re: fault codes help please
Post by: Marks DTM Calib on 11 February 2009, 12:41:20
Totally failing crank sensor Mark......as opposed to one with a crap signal.

Normaly a bit intermittent as its often due to a wire break
Title: Re: fault codes help please
Post by: markey mark on 11 February 2009, 13:23:34
Quote
Totally failing crank sensor Mark......as opposed to one with a crap signal.

Normaly a bit intermittent as its often due to a wire break

have changed it mark still no joy  :( :(
Title: Re: fault codes help please
Post by: markey mark on 12 February 2009, 12:35:40
right then just fitted brand new gen vx crank sensor and brand new vx battery still no go ???? could it be dispac ?? :( :( :'(
Title: Re: fault codes help please
Post by: RobG on 12 February 2009, 12:39:23
Code 72 points that way :'(
Any spark at the plugs :question
Title: Re: fault codes help please
Post by: markey mark on 12 February 2009, 12:42:18
Quote
Code 72 points that way :'(
Any spark at the plugs :question

thats me next check rob  :(
Title: Re: fault codes help please
Post by: RobG on 12 February 2009, 12:45:12
Thought you would have done that before whacking another crank sensor on ;)
Title: Re: fault codes help please
Post by: Marks DTM Calib on 12 February 2009, 12:46:42
72 is not a Motronic code.

Try disconnecting the MAF as a little test
Title: Re: fault codes help please
Post by: markey mark on 12 February 2009, 12:53:02
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Thought you would have done that before whacking another crank sensor on ;)

right checked got spark will go dissconect maf now
Title: Re: fault codes help please
Post by: markey mark on 12 February 2009, 12:56:49
Quote
72 is not a Motronic code.

Try disconnecting the MAF as a little test

no different mark all lights going just battery light staying on ??
Title: Re: fault codes help please
Post by: Marks DTM Calib on 12 February 2009, 12:58:04
Ok, any vac leaks?

Does it start if you apply light throttle?
Title: Re: fault codes help please
Post by: markey mark on 12 February 2009, 12:59:55
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Ok, any vac leaks?

Does it start if you apply light throttle?

no but when towing home i jumped it off and it started but as soon as you take foot of pedal it dies deffo no vac leaks
Title: Re: fault codes help please
Post by: Marks DTM Calib on 12 February 2009, 13:05:15
If it will run as described it does sudgest a possible vac leak or a sticking idle valve.

When it ran, was it lumpy or nice and smooth?
Title: Re: fault codes help please
Post by: RobG on 12 February 2009, 13:06:32
Quote
Quote
72 is not a Motronic code.

Try disconnecting the MAF as a little test

no different mark all lights going just battery light staying on ??
Sorry, my mistake Code 72 relating to DIS is for the GM Multec ECU but I`m pretty sure on the Motronic 2.8.1 72 is the throttle switch not running on full load
Title: Re: fault codes help please
Post by: Marks DTM Calib on 12 February 2009, 13:09:11
Quote
Quote
Quote
72 is not a Motronic code.

Try disconnecting the MAF as a little test

no different mark all lights going just battery light staying on ??
Sorry, my mistake Code 72 relating to DIS is for the GM Multec ECU but I`m pretty sure on the Motronic 2.8.1 72 is the throttle switch not running on full load

Nope, not a valid code at all for the V6 Motronic (and I just double checked the reference  :y)

Remember, there is no throttle swicth
Title: Re: fault codes help please
Post by: markey mark on 12 February 2009, 13:12:49
Quote
If it will run as described it does sudgest a possible vac leak or a sticking idle valve.

When it ran, was it lumpy or nice and smooth?

yep smooth as allways but died straight away  :(
Title: Re: fault codes help please
Post by: RobG on 12 February 2009, 13:19:13
Quote
Quote
Quote
Quote
72 is not a Motronic code.

Try disconnecting the MAF as a little test

no different mark all lights going just battery light staying on ??
Sorry, my mistake Code 72 relating to DIS is for the GM Multec ECU but I`m pretty sure on the Motronic 2.8.1 72 is the throttle switch not running on full load

Nope, not a valid code at all for the V6 Motronic (and I just double checked the reference  :y)

Remember, there is no throttle swicth
Not doubting you Mark, but why would it throw a "72". Am I right in thinking that 72 might relate to "first generation 2.8.1" i.e. up to say MY 95/96 or am I just waffling :D
Title: Re: fault codes help please
Post by: markey mark on 12 February 2009, 16:18:38
any more ideas chaps ???
Title: Re: fault codes help please
Post by: markey mark on 13 February 2009, 10:05:22
so whats this code 72 ????
Title: Re: fault codes help please
Post by: RobG on 13 February 2009, 10:30:21
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so whats this code 72 ????
AFAIK 72 relates to first generation Motronic 2.8.1 ECU

BOSCH Motronic ECU Fault Codes
 
This fault code chart shows the Bosch Motronic fault codes for the following systsms:- 1.5, 1.7, 1.8, 2.5, 2.7, 2.8, 2.8.1, 2.8.3, 3.1, MP3.1, 3.2, 4.1, 5.1, 5.1.1, First Generation and MPi.
 


72 Throttle Switch (TS) - full load contact High voltage - Full load switch not running
Title: Re: fault codes help please
Post by: markey mark on 13 February 2009, 17:55:00
well mines a 99 mv6 3.0 so buggered on that then !  :(