MATTIE281 Posted January 11, 2015 Report Posted January 11, 2015 Hi, I've still not got to the bottom of the problem with my galaxy. It's very flat. No boost. Does anyone know what the map sensor should read on a live scan? Any help will be much apriciated Matt Quote
richyrich Posted January 12, 2015 Report Posted January 12, 2015 Hi Matt,Just did a quick look on my Gal using my MaxiScan and I got 99kPa for the MAP,I also got 9.1 g/s on the MAF.Both readings change when I rev the engine.Not sure about this but I thought our cars had a MAF (mass air flow) sensor, and not a MAP sensor, which I think is a different sort of sensor that measures pressure in the intake manifold. Maybe there is a conversion in the engine management system.I had a very poor performance with mine some time ago (before I had my scanner), unplugged the MAF and no difference at all, fitted new one from VW(cheaper than Ford) and the difference was unbelievable.Hope this helps.Rich Quote
chrispb123456 Posted January 12, 2015 Report Posted January 12, 2015 Matt.Assuming you have Vagcom/VCDSVCDS is more suited to these engines you can check MAF sensor, boost control and EGR at the same time by collecting live data while driving the car.You would need to record measuring blocks 003. 010. 011 you need a good 5 - 10 seconds of 100% throttle (flat out) at 30mph Rich.The car has both MAP sensor located in the boost pipe work and the MAF on the air filter box. Quote
richyrich Posted January 12, 2015 Report Posted January 12, 2015 Thanks Chris - so long since I had to do any work on the engine.It's on the boost pipe work near to the engine fuse box isn't it?Rich Quote
MATTIE281 Posted January 12, 2015 Author Report Posted January 12, 2015 Cheers lads. I'll have another look . The map reading was nearly off the scale Quote
MATTIE281 Posted January 16, 2015 Author Report Posted January 16, 2015 Hi folks. Not had chance to have lap top on it , I swapped the map sensor with my mated Alhambra tonight and mine went the best it's ever gone, his was flat, they both had same numbers. Where is best place to get a new one? Main dealer ? VW or seat . Quote
BrianH Posted January 17, 2015 Report Posted January 17, 2015 it won't make any difference to the part you receive if you get it from either of them or ford for that matter. Might be a different price though so if you have access to both give them a call and ask? Quote
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