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Thread: Fault codes and lumpy drive help

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    Default Fault codes and lumpy drive help

    Hello, i must be posting in wrong section, please help

    Posted few weeks back but have a list of codes here that i did with pedal test which i think i got right

    P0704 Clutch Switch Input Circuit Malfunction

    P0170 Fuel Trim Malfunction (Bank 1)

    P1405 DPFE Sensor Upstream Hose Off Or Plugged

    P0134 O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1)

    P0567 Cruise Control Resume Signal Malfunction

    Can anyone help me out with the codes individually please. The car at start up idles funny and mis fires then is ok but ive noticed the car running lumpy now when driving, coming and going. The MAF has been done and didnt cure it, i want to do o2 sensor but without being a cheap skate dont want to wast £60 if it aint that.

    Its 2002 Vectra C 1.8 16v sri
    Last edited by vwsaxon; 18th April 2011 at 20:25.

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    Regular Member m8internet's Avatar
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    How old is the exhaust?

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    No idea, ive only just bought car, old i imagine.

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    the o2 sensor could be the problem alrite as it causes the ecu to read the wrong air fuel ratio, and would give lumpy performance

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    Ok, will start with that, then let you know. Thank you

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    Quote Originally Posted by vwsaxon View Post
    Ok, will start with that, then let you know. Thank you
    its horrible trying to guess what could be wrong, an spending money on parts that you mighten even need, also heard of people dipping an o2 sensor into lemon juice to clean it. probly wont work BUT if you where dead keen on getting a new one id just give it a try first. but thats just me, always look for a free fix first ha.

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    Free is good lol

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    Just a update, ive been to a local garage today and he confirmed the codes i had and then reset them, eml has gone off now and no codes now showing. So he said wait for the codes to come back on then we can go from there as they might be old codes.

    I also cleaned the egr valve today, whilst i was at it. Should the valve move as i was a little worried about pushing it so i didnt. Just had a bit of a clean round with some wd40 and removed some soot.

    I wont really know till the morning when i go to start it and the lumpy drive until i go for a bit of a drive. So have to wait and see.

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