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700/900 Series General Forum for the Volvo 740, 760, 780, 940, 960 & S/V90 cars |
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Lambda light is on but the car seems fine..?Views : 15061 Replies : 10Users Viewing This Thread : |
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Jul 7th, 2006, 16:15 | #1 |
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Lambda light is on but the car seems fine..?
Hello again folks, my third post today - sorry about that, but could really use advice from those who know their Volvos!
The Lambda warning light is on constantly, but then sometimes goes out for a few days and then comes back on. The car seems to run fine, and its just been serviced - at the time the light was out and had been for about a week, so I forgot to mention it (aarrgghh!). Now it's back on again. Is there something wrong here, or is it more likely to be the sensor itself failing? I appreciate that this is probably an old hat kinda problem for you guys but any advice is much needed and appreciated. I can't afford to be going back and forth to the garage more than I need to!! By the way the car is a 1996 N plate 940 2.3 Turbo SE Kind regards Sam Last edited by 818pumpkin; Jul 7th, 2006 at 16:18. |
Jul 8th, 2006, 16:30 | #2 |
VOC16743
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Don't Know if this could be of any use, but my Lambda light was lit after an inlet manifold gasket replacement,
Cured by dis-connecting the battery for a minute or so then re-connect (make sure you've got your radio code before dis-connecting). Dave
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'07 V70 T5 and '99 V40 1.8 XS also 1970 Morris Minor Traveller. Previously: '92 940s retired @ 195k, 87' 240GL retired @ 250k with terminal metal moth. |
Jul 17th, 2006, 01:58 | #3 |
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Reconnecting the battery did it for me under similar circumstances.
John D
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Volvo 760 GLE turbodiesel estate 1989 (auto). Ford Mondeo 2001 mk. 3 Ghia X petrol estate. Austin A60 Cambridge 1966 (auto) . Austin A60 Cambridge 1967 (manual) undergoing restoration. |
Jul 27th, 2006, 18:31 | #4 |
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Last Online: Oct 28th, 2021 14:10
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Location: Great Britain
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Ive got the same problem on mine . Garage seemed to think it was a wiring fault?
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Jul 27th, 2006, 23:46 | #5 |
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Mine was diagnosed as possibly a dry joint; it was reset and has been fine since. Garage advised if the light is on for the right reason car would most likely not be running all that well.
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Jul 28th, 2006, 10:53 | #6 |
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Mine came on a few times-940 2.3 lpt.I fixed the fault by taking out fuse ni 1
in the fuse box,started the car which wil not start put back in the fuse and the problem was solved joe |
Jul 28th, 2006, 11:06 | #7 |
RWD FTW!!!
Last Online: Mar 19th, 2019 09:06
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Location: Why should i have to tell you!
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Mine comes on when i pop a hose off (stupid clips), unmetered air into the system mess's up the a/f ratio that the 0/2 sensor senses, and it throws the light on...check all your hose's for leaks/splits, and do the usual battery reset and it will be fine...if it keeps coming on...time to check things out (0/2 sensor fail, or the cats dead)
Griz |
Aug 11th, 2006, 21:09 | #8 |
240 Turbo
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Try this,
Warm the car up and with the engine running, disconnect this plug (its the 02 sensor plug, located on the bulkhead amongst the loom) you'll need to use a flat screwdriver to unlock it where I've arrowed it. Listen for a change in the engine tone/smoothness. if the engine runs smoother with it disconnected then.... it may well be due to a blocked cat... check the service history to see if its ever been replaced. Chances are if its the original one its had it. get the emissions tested by a garage or mobile mechanic, this will tell you if the cat is blocked, a blocked cat clogs up the o2 sensor and then it all goes out the window. If the engine runs rougher then the o2 sensor is ok and the problem lies elsewhere. Switch off the engine, reconnect the sensor plug and disconnect the battery for a moment, this will reset the o2 sensor light (for the time being) Pm me, or post up here to let me know what happens. Mike
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1991 240 Turbo GL 1992 940 GL 1996 940 GLE Turbo Auto 1985 Bedford CF2 B230E |
Aug 11th, 2006, 21:27 | #9 |
240 Turbo
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1991 240 Turbo GL 1992 940 GL 1996 940 GLE Turbo Auto 1985 Bedford CF2 B230E |
Sep 21st, 2006, 09:43 | #10 | |
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Quote:
I have bought a 1996 Volvo 960 2.5, and it also had the Lambda light on. I tried to remove fuse 1,,, the tried to start(which it wont without the fuse), put the fuse back in, started and now the light is gone. Have driven about 30miles so far, and the light has not come back on. Super advice thank you. Anders ps. Does anyone know a good cheap independant workshop in the newcastle area?? |
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