Car - 1991 3B coupe
Back story - Changed the lambda sensor for a new bosch item, and air box for an ABY item and K&N two weeks ago.
Since the lambda and airbox change the car has run perfectly, better than ever in fact while using it daily, until today. When driving to work along a back road I booted it in 3rd gear and at about 3.5k I was almost launched through the windscreen with what I assume was my first experience of boost cut
Recreated the issue a number of times before pottering the rest of the journey at no/low boost without issue.
Read the fault codes when I got to work.
523 - Intake air temperature sender G42
533 - Idle speed control
544 - Boost pressure to maximum exceeded
523: This has been an ever-present and is normally the only code showing and the car seems to run fine. On this alone I assume this is not the issue here.
533: This has appeared occasionally since I've owned the car. Again, due to it running fine for months/years when showing the code, I assume this is not the issue here.
544: This is new and thus, likely the problem(??).
To cut an increasingly long story short, is this likely to be as a result of something I've done or just a coincidence and I should start with the basics. I believe a boost leak is one of the most likely caused for this problem??
Back story - Changed the lambda sensor for a new bosch item, and air box for an ABY item and K&N two weeks ago.
Since the lambda and airbox change the car has run perfectly, better than ever in fact while using it daily, until today. When driving to work along a back road I booted it in 3rd gear and at about 3.5k I was almost launched through the windscreen with what I assume was my first experience of boost cut
Recreated the issue a number of times before pottering the rest of the journey at no/low boost without issue.Read the fault codes when I got to work.
523 - Intake air temperature sender G42
533 - Idle speed control
544 - Boost pressure to maximum exceeded
523: This has been an ever-present and is normally the only code showing and the car seems to run fine. On this alone I assume this is not the issue here.
533: This has appeared occasionally since I've owned the car. Again, due to it running fine for months/years when showing the code, I assume this is not the issue here.
544: This is new and thus, likely the problem(??).
To cut an increasingly long story short, is this likely to be as a result of something I've done or just a coincidence and I should start with the basics. I believe a boost leak is one of the most likely caused for this problem??
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