Mass Air Meter Or Maf

[Guest mcdoo]

Hi Just bought an M reg 2ltr petrol galaxy off ebay and it stalls

at light and when you slow down at junctions been reading all

your replies to people but cant decide on the prob. whats the diff. between

mass airflow meter and a maf? also the engine revs sometimes goes up and down on its own when standing still any help will be gratefully recived <_< ;)

[Guest galaxykid]

Mass Airflow Meter = MAF <_< same thing different name, try cleaning the ISV ;)

[Guest mcdoo]

cheers mate but whats the ISV ?

[Guest galaxykid]

Idle Stabilisation Valve it's a bypass valve that allows air in on closed throttle so the engine doesnt suffocate ;) located on the inlet manifold on the rear of the engine, it gets gummed up and sticks, I'm sure if you hit the search engine its' been covered before? type ISV. into the search subject, the full stop is important ;) dont forget it <_<

[Guest mcdoo]

cheers galaxykid but could not find any info on ISV. thanks anyway

[Masked Marauder]

It is looked like this:

[bigdaddy]

mcdoo,,,,,,did u change the search settings to,,,,,,any date,,,,,,it helps

 

 

the default setting is for 30 days

[Guest Wanny]

Guy's I'd like to see the outcomes as per my post

 

http://www.fordgalaxy.org.uk/ford/index.php?showtopic=7751

[Scorpiorefugee]

I've had this problem on a couple of old grannies with 2L engines and a couple of other makes on mates cars, all having been misdiagnosed by main dealers!.

 

Try cleaning around the butterfly in the throttle mechanism. I haven't looked at this on the galaxies but my probs were caused by a build up of gunge which caused the slow tickover gap to close up and the anti-stall valve to work hard causing hunting and stalling at tickover.

 

Fraud bent the sealed stops as a temporary measure and tried to charge me 1/2 day's labour for a 'demon fix'.

 

I did it myself in 5 mins with a piece of rag and a screwdriver! I only had to do it once and it lasted another 200K!