Originally Posted by
LGM
Reading this thread got me thinking so I decided to check and clean, if required, my 3.0L D4 MAF and MAP sensors. The two MAF sensors are easy enough to get to and on checking one was in a grubby state and the other reasonably clean. Out with the trusty can of CRC MAF cleaner and hey presto a clean sensor. I also gave the other one a shot of the cleaning stuff just for luck!
On removing the MAP sensor I was certainly surprised to find it totally blocked with a black oily gunck! I used a very small jewellers screwdriver (very carefully) to scrape the gunck out. Cleaned it all up and put the sensor back into its mount then started the old girl up. Idle seems smoother. Anyhow I have yet to go for a run to see how it is at highway speed. That a tomorrow jobby!