jiffy
Member
Registered: 31st Jan 16
Location: swindon
User status: Offline
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I have a 1.0 corsa c 2002, I started with a p0141 fault which is the heater circuit on the post cat lambda sensor. changed rear lambda sensor with ngk lambda sensor. I have now changed the exhaust as the flexible pipe under the engine was cracked. still getting p0141 code. changed air maf unit on air intake. still the same .changed 1st lambda sensor in catalytic convertor. cleared fault code. ok for 1 day. now have p0136 fault code. checked fuse 33 all ok. does anybody have any clues or advice of what could be causing this problem. been going on for a couple of months now.
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Ian
Site Administrator
Registered: 28th Aug 99
Location: Liverpool
User status: Offline
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Could do with seeing live data for the voltage coming out of that sensor, not sure whether its lean or rich or both but P0136 means the air fuel ratio can't be corrected, ie. ECU tried by adjusting injector pulse width but there's still a problem.
Tempted to say air leak after the MAF as that would give you lean condition. Quickest way to diagnose that is spray brake cleaner around the pipes when its running on idle and see if it sucks and in revs up.
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jiffy
Member
Registered: 31st Jan 16
Location: swindon
User status: Offline
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no leak found around maf or inlet manifold. however a hairline crack has been found on the exhaust manifold,so when the car was started in the morning from cold the crack would allow air into the system triggering faulr code p0136.catalytic convertor has now been replaced and all ok.
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Ian
Site Administrator
Registered: 28th Aug 99
Location: Liverpool
User status: Offline
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