Ah yeah, sorry bit on the tired side here,
Ok, that's good the brake pedal gets hard to press when car is off,
Also try that again, but this time keep your foot on the pedal, not pressing hard just resting on it, then turn the car on but don't start up, just switch to accessories, see if the pedal goes soft,

Plus usually the abs light will show up on dash if it's not working properly, but then again, maybe not,

I'm in Australia, just outside the capital,

3:05am

Good night Good morning Good afternoon

Talk about in a few hours

llamallama said:

Ah yeah, sorry bit on the tired side here,
Ok, that's good the brake pedal gets hard to press when car is off,
Also try that again, but this time keep your foot on the pedal, not pressing hard just resting on it, then turn the car on but don't start up, just switch to accessories, see if the pedal goes soft,

Plus usually the abs light will show up on dash if it's not working properly, but then again, maybe not,

I'm in Australia, just outside the capital,

3:05am

Good night Good morning Good afternoon

Talk about in a few hours

Click to expand...

Well Evening nearly. And Good Morning to you !

Ok, so: Car off - pump pedal a few times (Goes rock hard). Then turn key to accessories (Stays hard), turn key further to start the car - and with foot still on the pedal - it starts to depress down. All sounds normal to me - yes ?

Just to be clear too. Car has no fault codes., no dash lights showing and no other faults. Just this stalling issue that seems worse when hot (From my limited experience of it / what my son / the garage have told me). And when hot it always stalls when the brakes are pressed / pumped a few times.




Argh cool being in Aus. A native ? I asked really because my wife and i are really into our Travel the last few years and anything other than where i live [Lowestoft in England....The UK's most Easterly Town] is really interesting to me.

We're off to Dubai on Tuesday, then Tokyo in Sept; and Las Vegas - then onto New York for Christmas. So a really exciting year for us and 'exploring' the Globe a little.

Never done Aus yet though. Guessing from the vastness of the Country and the huge choices of cities, suburbs and wilderness; we'd need to pool all our Holidays into one and do a 3 week trip or something. So would be the one holiday for the year for sure. I do have a friend out there i could likely stay with too. Which would be pretty cool.

Have a great weekend yourself.

My head still says Brake Servo.

Trouble is now - i bought a second-hand unit which was supposedly tested. warranted etc...BUT if we fit that and the stalling when braking still happens - we can't honestly / 100% rule out that it could be the newly fitted unit.

So; what i'm going to do i think is get a rebuild kit for the servo we now have sitting here. Rebuild and paint that and re-fit.

Either it will cure the issue - or at the very least i can 99.9% rule out the servo being the issue if the problem is still there.


So....where do i get a rebuild kit from ???

Now it's about time to get seriously on that one...

Hook MES on the car and watch the expected fuel delivery curve and the inlet manifold air pressure. They will tell where the stall comes from.

BRs, Bernie

If someone here helped You fix -or better, understand- your issue, hit the thanks icon @ bottom right corner, it's free and makes us feel helpy ;-)

Bernievarian said:

Now it's about time to get seriously on that one...

Hook MES on the car and watch the expected fuel delivery curve and the inlet manifold air pressure. They will tell where the stall comes from.

BRs, Bernie

If someone here helped You fix -or better, understand- your issue, hit the thanks icon @ bottom right corner, it's free and makes us feel helpy ;-)

Click to expand...

Hi Bernie,

I asked about this before.


Is MES some Fiat only diagnostic equipment ?

Cheers Syer.

If you're interested in getting it, I'd recommend going through Gendan. They're a UK company who will supply not only the software but also the appropriate cables, as well as great after sales support.

sevenfourate said:

Hi Bernie,

I asked about this before.


Is MES some Fiat only diagnostic equipment ?

Cheers Syer.

Click to expand...

Hi Shuv, it's actually a Fiat/Alfa/Mitsubishi? diagnostic tool, if you order it go ahead and buy also the adapters kit, you'll need the yellow one (#3) to access other modules than the ECU ...
MES will allow you to monitor almost everything that's on your car and you will also be able to send commands to every actuator.

That is a MUST have for any Fiat enthusiast !!

BRs, Bernie

If someone here helped You fix -or better, understand- your issue, hit the thanks icon @ bottom right corner, it's free and makes us feel helpy ;-)

Just to update this for anyone else in the future.

Car went into Desira Fiat Gt Yarmouth for fault Diagnosis Thursday. Cost was quoted as £108 for an hour.....and they were pretty sure that would be long enough to diagnose the fault.

This was the email i received shortly after their Master Technician had road-tested and then looked into:

"Just to let you know we have got to the bottom of the problem with the vehicle.

The underlying issue was corrosion on the crankshaft sensor, we have removed it and cleaned it.

The problem now seems to be cured but as a result on removing you sensor we now have to program the phonic wheel back to the vehicle. This will take an additional half an hour bringing

total cost of repair to £164.00 inc vat.



I trust this will be okay for you


******So this goes back to the very first thing we tried all those weeks ago ie: New crankshaft sensor (And the only actual fault / code the car ever showed up at any stage ) - and seemingly NOT being fitted in an professional manner.

I'm an Engineer (Not Automotive) so have some idea about the way in which these things should be done to minimise potential issues. Whether the sensor area wasn't cleaned up, if where the flange bolts on to the engine was corroded and not cleaned up, if there was gunge inside that was never removed before fitting the new sensor etc i can't say.


What i can say is the car has been faultless and better than ever the last few days !!!!! :slayer:


***Can anyone tell me / guess / understand why the corrosion / dirt in or around the crank sensor only manifested itself when warm - AND the brake was depressed !!!!!! And why no fault code pinged up ref the crank sensor. A strange one perhaps - but gladly sorted now.

Cheers guys.

sevenfourate said:

Just to update this for anyone else in the future.

Car went into Desira Fiat Gt Yarmouth for fault Diagnosis Thursday. Cost was quoted as £108 for an hour.....and they were pretty sure that would be long enough to diagnose the fault.

This was the email i received shortly after their Master Technician had road-tested and then looked into:

"Just to let you know we have got to the bottom of the problem with the vehicle.

The underlying issue was corrosion on the crankshaft sensor, we have removed it and cleaned it.

The problem now seems to be cured but as a result on removing you sensor we now have to program the phonic wheel back to the vehicle. This will take an additional half an hour bringing

total cost of repair to £164.00 inc vat.



I trust this will be okay for you


******So this goes back to the very first thing we tried all those weeks ago ie: New crankshaft sensor (And the only actual fault / code the car ever showed up at any stage ) - and seemingly NOT being fitted in an professional manner.

I'm an Engineer (Not Automotive) so have some idea about the way in which these things should be done to minimise potential issues. Whether the sensor area wasn't cleaned up, if where the flange bolts on to the engine was corroded and not cleaned up, if there was gunge inside that was never removed before fitting the new sensor etc i can't say.


What i can say is the car has been faultless and better than ever the last few days !!!!! :slayer:


***Can anyone tell me / guess / understand why the corrosion / dirt in or around the crank sensor only manifested itself when warm - AND the brake was depressed !!!!!! And why no fault code pinged up ref the crank sensor. A strange one perhaps - but gladly sorted now.

Cheers guys.

Click to expand...

Hi ,

The Crank sensor fails in a way that it will fail to ' see' rotation of the crank.

It has little else seeing rpm.. so doesnt see any issue.

Good that the garage has done enough to get it running well..

The BRAKE comment.. smacks of poor wiring

Other FIATs have had brake switch issues causing random stuff..

Charlie