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Lambda high - No fault codes

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04-15-2015, 02:27 AM

Bruce Wayne

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Join Date: Sep 2010

Location: UK

Posts: 303

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Lambda high - No fault codes

Just broken the 986 out of winter store, having been parked up due to the steering blowing a line. Replaced the rack and the coffin arms, alignment done, just went for the annual inspection and the lambda reading is 1.034 - pass is .97- 1.030

so it's running a tad lean !

my first suspicion was an O2 sensor, however, there are no fault codes thrown. at all.
Also there is a slight misfire at 3000 RPM.

I've run MAF cleaner through the ilet, cleaned the K&N filter and just about to check plugs. Also the fuel in it has been in there since November.

AOS was replaced max 3,000 miles ago

Anyone have any thoughts ?

__________________
986 x2 6sp
2x Range Rover Vogue 4.6
2004 MX5 Sport 6speed Strato Blue (wifelet)
2x Range Rover Classic & CSK

Last edited by Bruce Wayne; 04-16-2015 at 08:22 AM.

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