Thread: couple of issues

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!

Cleaning out the MAP sensor with a small jewellers screwdriver or pocking anything down that hole can easily damage the sensor, it is not recommended. Use a spray such as electronic contact cleaner as to not damage the sensor!

I have just done mine and it looked very dirty just like LGM's sensor. I used MAF cleaner spray and some cotton buds wet with the spray. I will do it and the 2 MAF's in 30-40,000k.

Cleaned both of mines yesterday, running a lot better. The MAF sensor clean made a big difference.


Agree with other comments, don't go poking anything down the hole on the MAP sensor, I clean mine to start with carby cleaner then finish with MAF cleaner which is essentially a Freon type substance.

Rich is right be careful!

I did not poke the little screw driver down the hole but needed to break the gunk around the base and clear the hole for the spray and cotton buds etc.

Anyhow it all worked.

Took the D4 for a lunch at the pub run. She's running sweet as! Certainly better than before!!!!!

No for SWMBO's D2 for a check and clean.