Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: steve6367 on 29 November 2014, 20:22:33
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I've had P0170-02 'Lean Exhaust' for a while, with tough running on startup.
Now it's running rough all the time and I ve got a real collection of codes!
P0170 'lean exhaust'
P1700 'svs request via can'
P0130 'O2 sensor 1 incorrect signal'
And in the tcu:
P1781 'CAN receives error'
P1740 'torque control failure detected'
Had a good look around and noticed positive battery terminal very hot and dropping almost 2 volts in the terminal - re-made that but things don't seem any better.
Any thoughts?
Steve
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Manual or auto :-\
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2001, CDX 2.2 Auto....
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When my 2.2 auto ran as sick as a pig i changed m a f and coil pack and made no difference....the car would not tick over properly and when you put your foot down would not go above 40mph,,,,,it turned out to be the 02 sensor,,,thats the first one on down pipe..changed that and all was well again :-\
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Well quick drive this morning and its very not well, running rough and gearbox goes into limp mode - all the same codes come back too. It seem s a strange mix of codes to me, so hard to know where to start!
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Has the cam sensor been looked at? Does all sorts. Of strange thinngs to an auto 2.2, and often without showing a cam sensor code :-\
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Cam sensor is only about 3 months old (genuine) - the old one turned out not to be faultily at the time though so I can try a quick swap back to rule it out.....
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Ok, I thought it might have been, but couldn't find the thread :-[
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Thats ok, any advise appreciated - I'm at a loss really tried so much over last couple of months but just not getting any better and now really gone down hill!
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my car kept going in to limp mode >:(. Then I decided to clean the throttle housing out and job done, might work for you :y
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Thank you - I have given the throttle body and breathers and good clean recently.
Picked up a GM MAF today as it is about the only involved part that has not been changed in the last few weeks - just about to pop it on and go for a spin so fingers crossed!
I will report back :y
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Well that's not fixed it :(
Has reduced the codes back to P0170, but still not running right.
Live data looks strange as o2 sensor (new genuine gm) goes rich and lean if accelerating / decelerating but never seems to cycle at cruise / idle. Then after a while all the live data stops and the only was to get it back is switch off engine and start again.
ECU on the way out? Faulty new Lambda?
Or time to drive it to Trents while it still moves?!
Steve
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Have you checked continuity from the lambda socket on the loom to the relatent ecu pins?
Cam timing definitely 100% correct?
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I will check Cam Timing, if it's wrong then it will have been so I changed HG at the start of the year. It did work very well after that though. What effect would it have if out? Would the internals not all crash together when started?
No not checked cabling - do you know which ECU pins?
Many thanks
Steve
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I will check Cam Timing, if it's wrong then it will have been so I changed HG at the start of the year. It did work very well after that though. What effect would it have if out? Would the internals not all crash together when started?
No not checked cabling - do you know which ECU pins?
Many thanks
Steve
Ecu pins will be in the wirirng section of the LPG guide :y
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Lambda Sensor 1 Violet X85 Pin28 Blue Pin28 Brown/Blue X83 Pin57/8 Black/Grey Pin36 Yellow
Lambda Sensor 2 Violet/Grey X85 Pin44 Blue Pin47 Brown/Blue N/A N/A
On the Z22XE, Y26SE and Y32SE engines there are two connectors on the ECU and we indicate above which connector is applicable. On the Y32SE/Y26SE X86 is the connector where the loom emerges and heads through the bulkhead into the car interior. X85's loom runs across to the cable tray on the engine.
On the Z22XE, X84 heads to the bulkhead while X83 heads to the engine.
Sorry to be a pain, but don't want to make things worse! The above is from the guide, so I need to disconnect and dismantle the ECU connector? Only 1 wire for the Lambda there though? Which one at the Lambda end will that be?
Steve
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Well that's not fixed it :(
Has reduced the codes back to P0170, but still not running right.
Live data looks strange as o2 sensor (new genuine gm) goes rich and lean if accelerating / decelerating but never seems to cycle at cruise / idle. Then after a while all the live data stops and the only was to get it back is switch off engine and start again.
ECU on the way out? Faulty new Lambda?
Or time to drive it to Trents while it still moves?!
Steve
I think thats normal . So have you got live data readings to chuck up...What code reader you got ,,,Maybe putting your live data up may help :-\
PS. Got another Cam sensor here if you wanna try it to be sure the one you got from GM is ok :y
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Z22XE
X84 Pin64 Black
X84 Pin62 Green
X83 Pin57 Black
X83 Pin 58 Grey
So on the engine loom plug pins 57 and 58 are the ones you need to test for continuity to the lamda sensor, and on the body loom, pins 62 and 64. Simply unplug and move the cable so the plug is reachable from the engine bay... that way you should, with an extra pair of hands, be able to check the wiring continuity with a multi meter :y
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Thank you both - got time to get the meter out tomorrow.
Will post some live data too :y
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Well wiring seems ok, good continuity the the sensor.
A high pitched wining noise seems to have developed on the rear left of the engine now, so I am wondering if my searching for a vacuum leak was not good enough. All the pipes in this area seem in tact - any likely suspects?
Many thanks
Steve
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Was o2 sensor brought from stealers by yourself or ordered online?
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I had a used pair off OOF originally, then just a front one from Eden VX in Bournemouth - collected myself. Currently running on used rear and new VX front.
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This is my noise:
(http://i429.photobucket.com/albums/qq19/steve6367/Omega/th_360509B1-69BD-4038-A33C-972AFEF99A59_zpsi4k4ngvp.mp4) (http://i429.photobucket.com/albums/qq19/steve6367/Omega/360509B1-69BD-4038-A33C-972AFEF99A59_zpsi4k4ngvp.mp4)
If I pull the vacuum hose from brake servo I can change the pitch of the noise by covering / uncovering the end of the pipe and it does not start for about 40 seconds after startup.
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Check inlet manifold nuts/bolt are tight to start with
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Inlet manifold and throttle body all seem secure - bolts / nuts at correct torque. I could pop the inlet off I suppose and check mating surfaces and gasket but thats not a 5 min job.
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20 min job,go on get out there lol
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Thats probably a fair point, I should not have sat down in front of the wood burner really!
I will have it off tomorrow and see if there is anything to see - I hope not though as only went back on a few months ago!
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Theres also where the egr is at the rear of the head,that gasket might have failed.
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So I think I've finally found the problem - gasket that secures the casting with the egr and temp sensors to the block had failed at the bottom. No idea why as was new when HG changed.
(http://i429.photobucket.com/albums/qq19/steve6367/9fcc14419ec83acbcdc372863b69db38_zps9f80c333.jpg)
Does anyone know what this part is called?
Many thanks again for all the help.
Steve
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Just use some rtv silicone on it,if you havnt got a gasket,but saying that i might have 1 in garage from my gasket set,as i never replaced mine.
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I almost tried the black VX cam cover sealant but managed to stop myself on the basis its a pain to get to so may as well get a new gasket :y
If you do have one, let me know - I will try local VX in morning just to see they have one on the shelf.
Many thanks
Steve
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I almost tried the black VX cam cover sealant but managed to stop myself on the basis its a pain to get to so may as well get a new gasket :y
If you do have one, let me know - I will try local VX in morning just to see they have one on the shelf.
Many thanks
Steve
Got 2 here you can have FOC Steve, if you want them PM me your Address and i'll have them on the way ASAP :y
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I almost tried the black VX cam cover sealant but managed to stop myself on the basis its a pain to get to so may as well get a new gasket :y
If you do have one, let me know - I will try local VX in morning just to see they have one on the shelf.
Many thanks
Steve
Got 2 here you can have FOC Steve, if you want them PM me your Address and i'll have them on the way ASAP :y
Update: Sorry Steve, I only have 1, the other is slightly different, but as I said, it will be on it's way tomorrow :-[
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Thank you, VX say they can't get one until next Tuesday so that's fantadtic :y
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Arrived and fitted today, a massive thank you as it let me get it sorted this weekend :y
So far it's running like a sewing machine again too.
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(http://i429.photobucket.com/albums/qq19/steve6367/Omega/B92A680A-2932-4128-A553-58E8555EF778_zpsm85a0um8.jpg)
http://i429.photobucket.com/albums/qq19/steve6367/Omega/25F60883-9D2D-451E-A1CE-5BE266480794_zpsn5laznqg.mp4
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Glad to help Steve, just giving a little back for all the help i've had from this Forum and its fantastic members! :y