Ive just had a quote from McGrath for nearly £580 for replacement lambda sensors in the 4200.. Only one has thrown up a recorded fault.
Quite apart from the prices ( I note that there are significantly cheaper https://secure.lambdapower.co.uk/partsearch/az2.asp?manu=MASERATI&model_grouping=4200 but there may be a lead time sourcing them ) I want some educated opinion on PO128 (https://www.samarins.com/diagnose/p0128.html )
I am at a loss to understand how the two can be related; the assertion seems to be that the coolant temp fault generated is more likely the result of a seemingly stored lambda fault, than a thermostat failure. The car runs great. It wouldnt if the O2 sensors were done, would it ? Dont get me wrong, the lambdas are well past the Maserati schedules service interval...
Any views...?
TIA
Quite apart from the prices ( I note that there are significantly cheaper https://secure.lambdapower.co.uk/partsearch/az2.asp?manu=MASERATI&model_grouping=4200 but there may be a lead time sourcing them ) I want some educated opinion on PO128 (https://www.samarins.com/diagnose/p0128.html )
I am at a loss to understand how the two can be related; the assertion seems to be that the coolant temp fault generated is more likely the result of a seemingly stored lambda fault, than a thermostat failure. The car runs great. It wouldnt if the O2 sensors were done, would it ? Dont get me wrong, the lambdas are well past the Maserati schedules service interval...
Any views...?
TIA
Last edited: