Air flow sensor

rodb · Nov 10th, 2015, 22:22

Hi all. Had trouble with the car tonight wouldn't tick over. Rac came disconnected air flow sensor car working. Question is is a new sensor required or could it be worth cleaning. Could it be something else. Thanks in advance. Also is that the proper name for it as tried online for a price and the website didn't recognise it

cheshired5 · Nov 10th, 2015, 22:32

It's a MAF which means Mass Airflow Sensor.
If you get the part number off it, that'll help your search.
Cleaning can help but in theory, they shouldn't need cleaning because they're well protected.
With cheap £5 diagnostics, you could test it easily and quickly to save guessing as they're expensive new.

oragex · Nov 10th, 2015, 22:44

As above, get one of these and download Torque app for Android for free. You will be able to read the MAF, fuel pressure, intake air temp and many other and compare them with the normal values (normal MAF is about 3.0 at idle)

To clean it get a MAF sensor cleaner and spray inside. Check out this other video

rodb · Nov 10th, 2015, 23:11

Guessing it is the sensor is it worth cleaning or replace. Some cheap ones about are these worth it or should it be the bosch one

cheshired5 · Nov 10th, 2015, 23:28

Quote:

Originally Posted by rodb

Guessing it is the sensor is it worth cleaning or replace. Some cheap ones about are these worth it or should it be the bosch one

Never buy a cheap one. Bosch only but I would suggest testing yours first as it may be ok.
A used genuine is better than a new generic copy every time and they're often cheaper. £15-20.
What engine have you got? Oragex's figure would be too low for a D5 which runs at 13g/s at idle.

rodb · Nov 11th, 2015, 06:29

Hi it's a 2.4t figured as the car run it with it disconnected it had to be the sensor.

rodb · Nov 11th, 2015, 10:29

Took apart this morning. Found the security screws a pain (hacksawed a slot in the screw when unit off) gave it a big spray with electric contact cleaner back together seems ok. Will see if it's done the trick. Thanks for replies.

Georgeandkira · Nov 11th, 2015, 22:05

I hope it works.
There is an irony here.
Whenever cleaning a MAF is mentioned, "Use MAF cleaner only and not contact cleaner" is shouted from the rooftops. Also, people are warned against touching it. "Let it air-dry completely" is the other command. Kira

oragex · Nov 12th, 2015, 02:37

Quote:

Originally Posted by rodb

Took apart this morning. Found the security screws a pain (hacksawed a slot in the screw when unit off) gave it a big spray with electric contact cleaner back together seems ok. Will see if it's done the trick. Thanks for replies.

This may help in the future

Nov 10th, 2015, 22:22	#1
rodb Junior Member Last Online: Jul 4th, 2016 13:59 Join Date: Mar 2013 Location: swindon	Air flow sensor Hi all. Had trouble with the car tonight wouldn't tick over. Rac came disconnected air flow sensor car working. Question is is a new sensor required or could it be worth cleaning. Could it be something else. Thanks in advance. Also is that the proper name for it as tried online for a price and the website didn't recognise it

Nov 10th, 2015, 22:32	#2
cheshired5 Premier Member Last Online: Dec 26th, 2021 13:42 Join Date: Dec 2013 Location: Crewe	It's a MAF which means Mass Airflow Sensor. If you get the part number off it, that'll help your search. Cleaning can help but in theory, they shouldn't need cleaning because they're well protected. With cheap £5 diagnostics, you could test it easily and quickly to save guessing as they're expensive new. __________________ 2002 S60 SE D5 Manual 209000 miles

Nov 10th, 2015, 22:44	#3
oragex Premier Member Last Online: Jul 26th, 2021 21:24 Join Date: Jun 2013 Location: Coldnada	As above, get one of these and download Torque app for Android for free. You will be able to read the MAF, fuel pressure, intake air temp and many other and compare them with the normal values (normal MAF is about 3.0 at idle) To clean it get a MAF sensor cleaner and spray inside. Check out this other video __________________ Several Volvo Repair Videos https://www.youtube.com/playlist?lis...ECTts0FSVSOT_c

Nov 10th, 2015, 23:11	#4
rodb Junior Member Last Online: Jul 4th, 2016 13:59 Join Date: Mar 2013 Location: swindon	Guessing it is the sensor is it worth cleaning or replace. Some cheap ones about are these worth it or should it be the bosch one

Nov 11th, 2015, 06:29	#6
rodb Junior Member Last Online: Jul 4th, 2016 13:59 Join Date: Mar 2013 Location: swindon	Hi it's a 2.4t figured as the car run it with it disconnected it had to be the sensor.

Nov 11th, 2015, 10:29	#7
rodb Junior Member Last Online: Jul 4th, 2016 13:59 Join Date: Mar 2013 Location: swindon	Took apart this morning. Found the security screws a pain (hacksawed a slot in the screw when unit off) gave it a big spray with electric contact cleaner back together seems ok. Will see if it's done the trick. Thanks for replies.

Nov 11th, 2015, 22:05	#8
Georgeandkira Premier Member Last Online: Yesterday 03:44 Join Date: Feb 2009 Location: Hackensack	I hope it works. There is an irony here. Whenever cleaning a MAF is mentioned, "Use MAF cleaner only and not contact cleaner" is shouted from the rooftops. Also, people are warned against touching it. "Let it air-dry completely" is the other command. Kira

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