John Hughes Posted May 21, 2011 Share Posted May 21, 2011 Firstly a big thanks to Nick Chan for advice and loan of the CAN-USB adapter and a spare Lambda Sensor. Problem - Did a test day at Curborough with LADS last Wednesday all went well until the drive home. After about 10 miles the car started to hesitate ad then surge on light throttle, mid to full throttle no problem at all. Stopped for fuel approx 15-20mins then same again, OK for 10 miles then very difficult to drive on light throtted. To cut along story / trip home short the pattern was repeated again on the final leg home. The last 15 miles on the motorway driven by accelerating to 80 then off the throttle to 65 then accelerating again. The car would not cruise with the throttle in a steady position. A visual check revealed no loose connectors / TPS / split MAP sensor pipe. Diagnosis - Ran car with Easimap on Laptop and it revealed no change in the Lambda reading - was giving 1.12 constantly. Previous research suggested that it should oscillate. Cure - Replaced Lambda Sensor - Car now behaves as it should, no hesitancy etc, Easimap shows the Lambda output oscillating between 0.6 an 1.0. Lambda Sensor cross reference is # BOSCH : 0258 006 155 - 0258 006 156 - 0258 006 484 - 0258 006 485 # FORD : 1215538 - 98 AB 9F472 BB - 98 FB 9F472 CA - 98 FB-9F472-DA - 1143514 - 2S6A-9F472-BB - 1053108 - 1067580 - 1088851 # MAZDA : 1 E04 18 861 # NGK : OZA519-D1 - 0244 # NTK (NGK-GROUP) : 0383 - OZA659-EE9 # VW : 7M0 906 265 B - 7M5 906 265 D - 7M5 906 265 B Maybe of help in the future Link to comment Share on other sites More sharing options...
huwp Posted May 21, 2011 Share Posted May 21, 2011 Interesting. Had exactly the same issue with my Sigma 125 last year. Useful reference material in your post. Huw Link to comment Share on other sites More sharing options...
DJ. Posted May 21, 2011 Share Posted May 21, 2011 Thanks for posting, I'm sure this will help a lot of owners in the future. Duncan Link to comment Share on other sites More sharing options...
Area Representative paul richards Posted May 21, 2011 Area Representative Share Posted May 21, 2011 Glad it's cured and ready for Borders Tour next weekend. Just got to mend Peters car now!!! Link to comment Share on other sites More sharing options...
Martin J Posted May 21, 2011 Share Posted May 21, 2011 Thanks useful info. Out of interest what did you pay for a new lamda sensor? Link to comment Share on other sites More sharing options...
John Hughes Posted May 21, 2011 Author Share Posted May 21, 2011 New sensor on order £45 + VAT from local motor factors. FleaBay appears to be about the same sort of price Link to comment Share on other sites More sharing options...
Steve Cornford Posted May 22, 2011 Share Posted May 22, 2011 Numpty question. Are you saying that any Lambda sensor from your list is a suitable replacemnt? Link to comment Share on other sites More sharing options...
John Hughes Posted May 22, 2011 Author Share Posted May 22, 2011 Steve Yes that would appear to be so Link to comment Share on other sites More sharing options...
Area Representative Nick Chan Posted May 24, 2011 Area Representative Share Posted May 24, 2011 Hi John, Excellent news and much quicker diagnosis with the Can Bus adaptor Glad its all sorted and with not much cost or hassle 😬 Nick Link to comment Share on other sites More sharing options...
Windy Corner Posted May 24, 2011 Share Posted May 24, 2011 Almost exactly the same symptoms I had after my trip to Curborough Caterham Midlands also diagnosed a Lambda Sensor, although at a significantly higher cost Nice to know there are alternatives Rik Link to comment Share on other sites More sharing options...
brianmurray325hotmail.com Posted May 25, 2011 Share Posted May 25, 2011 Well isn't it strange! i'm on Lambda sensor No3 on my Sigma 150 in 7000 miles, tried it with both Cat in service and Cat bypass pipes in service, car still likes to consume oxygen probes. Never owned a vehicle where i've had so much problem with the device. I daren't leave home with out one! I had the same symptoms as above, during acceleration its ok of course because the control loop that the probe is in goes "Open Loop" to allow maximum fuel delivery. I'm wondering if there's something that's poisening the probe, which they are prone to, sealing compound, gasket compund that may have been used during the engine assembly. May be if thats the case i'll have burnt it off, destroying probes on the way, and things may be ok from now on...fingers crossed Link to comment Share on other sites More sharing options...
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