When I had similar issues I finally traced it to the air pressure sensor that is fixed to the nearside of the intercooler. Bought a bosch replacement from Carparts4Less ~£30 (collectected from EuroCarParts) and the problem went away. N.B. the same part on the ECP web site was ~50!
You should check the inercooler hoses for leaks too, and possibly a vacuum line test.
Last edited by wynnj; Mar 14th, 2024 at 21:15.
|