Got a question for those more experienced with the newer cars. In the old days I used to be able to clean the throttle plate on my GTIs, Jettas and Passats with carb cleaner. I'm currently getting a constant CEL on my wife's Passat (P1128 code). My Bentley manual says that code means: Long term fuel trim B1; system too lean. I fixed a bunch of broken vacuum lines, cleaned out the snow screen in th intake box and checked for more air leaks around the engine bay. I then reset the CEL but it keeps returning. I'm hoping that it is not the MAF because I am past the 70,000 mile warranty period. I've read that I can clean it but I want to make sure that I don't damage it. Can I use carb cleaner or do I have to use an electrical contact cleaner? Is this a PITA to do?
Thanks in advance.
Ron