Cheers!
My XJR failed emissions test today as the fast idle Lambda value was higher than max allowed. Everything else is OK, car drives perfect, has steady idle and has normal MPG and so on.
Tester told me that Lambda value tends to be high if the is an intake or exhaust leak. XJR had full specialist head repair last year because of leaking head gaskets so I don't think that's where the problem is. However there is an exhaust leak between center muffler and left side rear muffler. The exhaust leak can be felt by hand.
My question is how sensitive Lambda value tends to be ie. could this exhaust leak be enough to cause this?
My XJR failed emissions test today as the fast idle Lambda value was higher than max allowed. Everything else is OK, car drives perfect, has steady idle and has normal MPG and so on.
Tester told me that Lambda value tends to be high if the is an intake or exhaust leak. XJR had full specialist head repair last year because of leaking head gaskets so I don't think that's where the problem is. However there is an exhaust leak between center muffler and left side rear muffler. The exhaust leak can be felt by hand.
My question is how sensitive Lambda value tends to be ie. could this exhaust leak be enough to cause this?