mass flow sensor

ssc1 · 9th February 2009, 16:56

yet again the mass airflow sensor on my 75 diesel is failing , it seem to packup when the weather on the roads is very wet ,seems like water may be getting onto the sensor bit and causing a short. is this why they fail and is there anyway that i can stop this . the first one was a bosch one ,the second a cheap ebay one ,they both have lasted about the same time and failed in the same way.

would one of roverons maf items stop this happening again or would it help one that has partially failed , i must say that its the only annoying thing on the car and it has now done 205k ...

JohnDotCom · 9th February 2009, 18:27

The only sure way IMHO is to do the MK2 Air Intake Mod,
this does seem to prevent any water getting into system and damaging MAF by it getting wet.

Is your Air Filter getting very wet?

The Pierburg MAF is of course a lot cheaper and with the Added performance etc gained with a Synergy,
you will really notice a difference, please note that you cannot just fit a Pierburg MAF as a replacement,
it needs either the Synergy or a Mafam unit from him to work.

The cheap MAF's on EBay do not seem to last or be very good \I'm afraid,
but a Genuine Bosch one should be a lot better.
It should also have some form of Warranty with it,
but not sure of timer/mileage.

eu53zxr · 10th February 2009, 20:17

Just fitted a Pierburg MAF & Synergy from Roverron today. I spoke to him on Saturday morning, paid for it, he said he would post it Monday. Turned up this morning whilst I was a work.

Took about 1 hour to fit, best £125.00 I ever spent on the car

Goes so much better, pulls like a train.

Ron is da man

9th February 2009, 16:56	#1
ssc1 Avid contributor 75 saloon Join Date: Nov 2006 Location: northampton Posts: 179 Thanks: 0 Thanked 1 Time in 1 Post	mass flow sensor yet again the mass airflow sensor on my 75 diesel is failing , it seem to packup when the weather on the roads is very wet ,seems like water may be getting onto the sensor bit and causing a short. is this why they fail and is there anyway that i can stop this . the first one was a bosch one ,the second a cheap ebay one ,they both have lasted about the same time and failed in the same way. would one of roverons maf items stop this happening again or would it help one that has partially failed , i must say that its the only annoying thing on the car and it has now done 205k ...

9th February 2009, 18:27	#2
JohnDotCom * Rover 75 FaceLift Tourer CDTi 170BHP Auto ConnSE 2005 Model Starlight Silver Join Date: Nov 2006 Location: Abergele Posts: 28,735 Thanks: 0 Thanked 6 Times in 5 Posts	The only sure way IMHO is to do the MK2 Air Intake Mod, this does seem to prevent any water getting into system and damaging MAF by it getting wet. Is your Air Filter getting very wet? The Pierburg MAF is of course a lot cheaper and with the Added performance etc gained with a Synergy, you will really notice a difference, please note that you cannot just fit a Pierburg MAF as a replacement, it needs either the Synergy or a Mafam unit from him to work. The cheap MAF's on EBay do not seem to last or be very good \I'm afraid, but a Genuine Bosch one should be a lot better. It should also have some form of Warranty with it, but not sure of timer/mileage.

10th February 2009, 20:17	#3
eu53zxr Newbie MG ZT Cdti + Join Date: Jan 2007 Location: Essex Posts: 15 Thanks: 0 Thanked 0 Times in 0 Posts	Just fitted a Pierburg MAF & Synergy from Roverron today. I spoke to him on Saturday morning, paid for it, he said he would post it Monday. Turned up this morning whilst I was a work. Took about 1 hour to fit, best £125.00 I ever spent on the car Goes so much better, pulls like a train. Ron is da man