S2 ABY Engine

[mathias]

The ECU that ive got now is standard, ok i Will change the mfts

[mathias]

Now ive changed the mfts and the problem is still there but its better. But now the temperature gauge shows above 90degrees.

[prj]

Lol, problem can't be "still there but better".
With blown MFTS you just have spring boost. So you either have spring boost or not.

Pressurize the intake. Do a boost leak test.

[mathias]

Lol, problem can't be "still there but better".
With blown MFTS you just have spring boost. So you either have spring boost or not.

Pressurize the intake. Do a boost leak test.

Ok will do a leak test, but the engine temperature is there anything i should worry about ?

[prj]

Ok will do a leak test, but the engine temperature is there anything i should worry about ?

How much over 90 degrees does it show?
From memory there are different MFTS as well, some of them show a slightly different value for coolant temp.

I think I remember this being talked about on the forum.

[mathias]

How much over 90 degrees does it show?
From memory there are different MFTS as well, some of them show a slightly different value for coolant temp.

I think I remember this being talked about on the forum.

its like 95-100 on the gauge

[prj]

Check the temperature in the ECU via the measuring blocks.
If that shows 90 deg, then don't worry about it.

[mathias]

Check the temperature in the ECU via the measuring blocks.
If that shows 90 deg, then don't worry about it.

Today ive found a hole one the hose wich goes From the turbo to the air filter box, so i temporary fixed it and hot out and drove for about 30-40 min and the temperature gauge showed about 95, but in the obd was never above 80. And as long as you didnt rev above 3000rpm the car was fine but at the end of the run it started to die and hacking very much,

Another question does it have any catch tank or lp pump ?

[prj]

Did you pressurize the intake? How long does it hold 1 bar?

[mathias]

Did you pressurize the intake? How long does it hold 1 bar?

no havent pressurize the system waiting for some stuff for that, i just took down the hoses around the turbo and found a hole.

[prj]

You probably will find a lot more holes once you do a pressure test.
Fix that first...

[mathias]

You probably will find a lot more holes once you do a pressure test.
Fix that first...

Ok will do that, did you see my question regarding the fuel ?

[mathias]

now i have done a pressurize test and found a vacuum hose that was broke, i also changed the fuel filter. The car worked great for about a day and then it was back to restarting the ecu.....


But i found that one of the fuel hose to the fuel filter could be a problem. But could that make the ecu restart ? if it doesnt get any fuel ?

[prj]

ECU restarts because there is a problem with software, there is a bad ground/ignition, or there is no signal from the engine speed sensor.

These are the only three possible reasons.

[mathias]

ECU restarts because there is a problem with software, there is a bad ground/ignition, or there is no signal from the engine speed sensor.

These are the only three possible reasons.

ok i have been checking som grounding, like those on the inlet manifold. will do a thoroughly check of the grounding, ignition and engine speed sensor.