Volvo 240/260 - car just dead, driving smooth, then lambda sond on

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Sun 7 Nov 2010 16:38
Volvo 240/260 - car just dead, driving smooth, then lambda sond on - BDG

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I am driving Volvo 240 's for a long time but this one 1991 with lambda sond is giving me headaches. Basically, my car runs smoothly, sometimes problems with wet start but runs at the end. All electrics renewed: distributer cap, leads, plugs, bobine. But driving around sometimes the car just stops! Then the lambda sond turns on and after a couple of minutes being dead, we can start the car again: it runs smooth again but we never know when it will happen again ...... after one hour, a day, a couple of days or even a week? Went to garage, they can't find it, replaced (2nd hand though mass airflow sensor - MAF) made things worse ..... I found one person online having the same problems; eventually came back with distributor cap problem but as I mentioned before, in ours has been replaced. Getting nuts by the fact that not even a garage, not Volvo, (reading the lambda faults and resetting the system / light) can not find the problem. Please help me out, I am getting nuts here

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Sun 7 Nov 2010 18:04
Volvo 240/260 - car just dead, driving smooth, then lambda sond on - Peter D

Whay do the diag codes tell you. The LED and selector unit on the LHS strut. Regards Peter

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Sun 7 Nov 2010 18:12
Volvo 240/260 - car just dead, driving smooth, then lambda sond on - Peter D

You need to tell me more but this may be a faulty Flywheel sensor as it does not report a fault to the ECU as it thinks you have stalled. and whilst the car misses then shuts down it has pumped unbernt fuel through the exhaust thus the lamda message. Lamda Sond is a different system and uses recirculating gases. Are you sure you have that option. Regards Peter

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Sun 7 Nov 2010 19:37
Volvo 240/260 - car just dead, driving smooth, then lambda sond on - injection doc

240/260 volvos used to suffer with the fuel pump relay failing as it got hot. also the ign modules have been known to be trouble some and if the wrong type of replacement has been fitted these cause all sorts of issues that make diagnostics really difficult.

I would concentrate on fule pump relay, crank sensor & ign modu;e functions

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Mon 8 Nov 2010 10:22
Volvo 240/260 - car just dead, driving smooth, then lambda sond on - ajs2

Sounds like a typical lambda failure. Often these do not show up on diag's as the sensors poor track the gas/air mix in exhaust rather than dont track them at all. Symptoms sound right for this kind of issue

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