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A Friend Needing Help


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my friend has just brought a bugeye scooby and its not running to well, its a jap import. so we plugged in to my laptop it had a tumble sensor error which i have fixed, but it also is saying lean fuel bank 1. does anyone know what this might be and why its only on bank 1? the car wont boost, it keeps cutting the boost off?

any help would be great cheer

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Hi there, how did you manage to cure the tumble valve sensor?? been told by local garage its over £250 to replace left 2 valve, friend of mine has reaccuring engine code with this problem, car is running fine thou. Jolly may be able to give advice on the lean fuel bank fault!

you have to make sure that you put the sensor on right, you cant just put in straight on to the bolt holes you have to put it on off set and rotate it to line up with the holes. you know if you have it right because if you let it go a bit it will try to turn back

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my friend has just brought a bugeye scooby and its not running to well, its a jap import. so we plugged in to my laptop it had a tumble sensor error which i have fixed, but it also is saying lean fuel bank 1. does anyone know what this might be and why its only on bank 1? the car wont boost, it keeps cutting the boost off?

any help would be great cheer

Hi, bank 1 normaly is the o2 sensor pre cat, this is fitted in manifold just before the up pipe. please test the o2 sensor before carrying out replacement as the sensor is approx £300 from main dealer. there are other reasons why this is bringing up this fault code, has the vehicle still got all of its cats fitted? has the vehicle been re mapped? wrong grade of fuel used? hope this helps. Dean.

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Hi, bank 1 normaly is the o2 sensor pre cat, this is fitted in manifold just before the up pipe. please test the o2 sensor before carrying out replacement as the sensor is approx £300 from main dealer. there are other reasons why this is bringing up this fault code, has the vehicle still got all of its cats fitted? has the vehicle been re mapped? wrong grade of fuel used? hope this helps. Dean.

hi dean

yeah the car has got a 3inch de-cat system. i found out he was using 95 ron and not 99 so i'v got him to start using that. i had a look at the ecu aswell and at some point something was cut in to the ecu wiring but is not there now. How do i test the o2 sensor or what is the reading it should be running at? i am using ecuexpoler to see what everything is doing.

Thank you for your help

adrian

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Hi, you need to check that the o2 sensor is sending its signal to the ecu, get the engine to normal op temp and at 2000 revs you may be able to use your lap top to see if the sensor is reading/changing from rich to lean simultaniously, if this is the case than the sensor is working, if it stays rich or lean then there could be a fault with the sensor, good luck. Dean

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Hi, you need to check that the o2 sensor is sending its signal to the ecu, get the engine to normal op temp and at 2000 revs you may be able to use your lap top to see if the sensor is reading/changing from rich to lean simultaniously, if this is the case than the sensor is working, if it stays rich or lean then there could be a fault with the sensor, good luck. Dean

thank you i will give it a try at the weekend

adrian

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