MAP sensor repeatedly failing. 4th in 6 months. Help

[sirjimalot]

After having no look the with the other two posts at all ive found myself here hoping someobe may have an idea.

MAP sensor failed again last night that's the 4th one I've had in 6 months. 3 new 1 from the scrappy.

What's happening is when I fit a new sensor the car feels great. After a week or so it seems to develop flat spots through the rev range which gradually get worse and worse then becomes very hesitant.

Everytime a sensor has failed it seems to be hard acceleration from maybe 2k rpm to 4-5k rpm when you let off the throttle it makes an almighty bang (sounds exactly like when a boost pipe blows off) doesn't seem to do it in between changes just when you let off the throttle. This happens rather often and then from nowhere it does it and the car goes into limp and that's the sensor kaput.

Sometimes after it makes the almighty bang it misfires and the EML light flashes. Then goes. Vag com has only ever once detected a misfire.

All wiring is fine around sensor and I've even had an auto electrician at it from work.

Sorry about the long winded-ness but I'm really hoping someone can help me out this Time.


Car is a mk3 Ibiza cupra. K03s, revo stage 2 , millteck system, QPENG Downpipe, TIP etc

Any help or ideas is much appreciated.

Cheers

 

[georgen]

I have same problem, this is my 3rd Maf in 4 months, I think its down to my pipercross panel filter as when i open up the filter it has grit sitting on top of it, so think some getting through to maf and taken it out. this is only my opinion on it and dont know what filter you run but I know someone else thats having probs with his TT, he has just fitted another maf and a bosch filter to see if it sorts it.

Ps whats the crack with a pipercross filter that doesnt filter lol.

 

[sirjimalot]

I have same problem, this is my 3rd Maf in 4 months, I think its down to my pipercross panel filter as when i open up the filter it has grit sitting on top of it, so think some getting through to maf and taken it out. this is only my opinion on it and dont know what filter you run but I know someone else thats having probs with his TT, he has just fitted another maf and a bosch filter to see if it sorts it.

Ps whats the crack with a pipercross filter that doesnt filter lol.

Wow a reply at last. Lol

I still haven't solved the problem as the car has been off the road for winter etc.
I run a Jetex open filter and never had any issues at all until the first one went.

There is not dirt or anything inside the filter so I think that could be unlikely for my situation but again I'm still no further forward.

I've been debating getting another map and ditching the stage 2 revo as this is when the problems began. Maybe a coincidence but worth a try.

 

[ibizacupra]

you mean MAF sensor right? you posted MAP.. which is it?

 

[sirjimalot]

you mean MAF sensor right? you posted MAP.. which is it?

Hi Bill,

No no I do mean MAP which is why I say dirt inside the filter would be highly unlikely. I think the reply by Georgen confused matters as I think he means MAF.

Do you have any idea why I've destroyed so many???

 

[georgen]

Sorry, my fault should of opened eyes, I was talking about Maf

 

[sirjimalot]

Sorry, my fault should of opened eyes, I was talking about Maf

DOH

 

[ckyliu]

If you fit a cotton filter and put too much oil on it, the excess is sucked towards the intake manifold and on to the MAF, which will kill it if it's a hot wire type (this was a well known issue with the 1.9 TDI PD130). I wonder if the oil could affect MAP sensors too?

It should also be noted that paper element disposable filters provide superior filtration to cotton panel types, you only need to hold them up to the light to see the difference! Not sure if that would affect MAPs though.

 

[tjagnewLCR265]

Actuator on the turbo could be giving you a ghost fault of a map sensor. Manifold air pressure is not being released or built up correctly. What fault did they list when failed mate. ? If you remap the car you could have it removed chum

 

[andrewpain]

After having no look the with the other two posts at all ive found myself here hoping someobe may have an idea.

MAP sensor failed again last night that's the 4th one I've had in 6 months. 3 new 1 from the scrappy.

What's happening is when I fit a new sensor the car feels great. After a week or so it seems to develop flat spots through the rev range which gradually get worse and worse then becomes very hesitant.

Everytime a sensor has failed it seems to be hard acceleration from maybe 2k rpm to 4-5k rpm when you let off the throttle it makes an almighty bang (sounds exactly like when a boost pipe blows off) doesn't seem to do it in between changes just when you let off the throttle. This happens rather often and then from nowhere it does it and the car goes into limp and that's the sensor kaput.

Sometimes after it makes the almighty bang it misfires and the EML light flashes. Then goes. Vag com has only ever once detected a misfire.

All wiring is fine around sensor and I've even had an auto electrician at it from work.

Sorry about the long winded-ness but I'm really hoping someone can help me out this Time.


Car is a mk3 Ibiza cupra. K03s, revo stage 2 , millteck system, QPENG Downpipe, TIP etc

Any help or ideas is much appreciated.

Cheers

my daughter's golf 5 GT (1.4TSi twincharger) kept showing MAP faults and we had 2 sensors changed. Finally had a deep diagnostics in a VW dealer, who changed the Turbo Solenoid Actuator valve, and so far it's been a transformed car. Running MUCH better. Mind you, it also had new plugs, air filter etc. But the turbo solenoid made a huge difference.