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Home > Technical (L322) > Misfire on all cylinders, random misfire, misfire at startup

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Ian928

Member Since: 16 Aug 2016
Location: Kristiansund
Posts: 78

2006 Range Rover Supercharged 4.2 SC V8 Java Black

Danwilderspin wrote:
What mileage was your car? Did you have a slightly lumpy idle before do you remember? How is your idle now?

MU car is at 220.000 km’s.
As far as I remember, the Idle was normal. I remember there was a sound like the supercharger was recirculating air or something, I need to drive the car for a while to see if this is gone. 2006 Supercharged

21st Oct 2020 9:07pm

Ian928

Member Since: 16 Aug 2016
Location: Kristiansund
Posts: 78

Danwilderspin wrote:
Also did this fix your lamdba/ o2 faults? If you had one bank not firing at all it would mess up the values for sure

I think the ecu needs the engine to go through 2 or 3 warm up cycles before it will set Off the error code for this. I am crossing my fingers! 2006 Supercharged

21st Oct 2020 9:10pm

Danwilderspin

Member Since: 15 Jun 2016
Location: Cambridgeshire
Posts: 2215

2007 Range Rover Vogue SE 4.2 SC V8 Zermatt Silver

Ian928 wrote:
Danwilderspin wrote:
What mileage was your car? Did you have a slightly lumpy idle before do you remember? How is your idle now?

MU car is at 220.000 km’s.
As far as I remember, the Idle was normal. I remember there was a sound like the supercharger was recirculating air or something, I need to drive the car for a while to see if this is gone.

Interesting so aside from the sc noise it went from working lovely to like a bag of crap - just wondered if it slowly broke down. Current stable:
2006 BMW M6
2007 4.2 V8 S/C FF
Gone:
2002 4.4 V8 FF

21st Oct 2020 11:06pm

Ian928

Member Since: 16 Aug 2016
Location: Kristiansund
Posts: 78

You are right, it started with some misfiring at startup, then got Worse and Worse. 2006 Supercharged

22nd Oct 2020 4:43am

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