Technical No power and little to none boost

[Fabs29]

Hey guys wonder if any of you can help, I have a 500 twinair and it has no power and little to zero turbo boost, a friend used a code reader and it gave me P0236-62 Air Leakage in Turbocharger if has anybody come across this can you tell me how to fix it please. Thanks

 

[s130]

Nearest I can get is P0236-00
Your -02 is an extention code but still part of the same base fault code.

 

[Fabs29]

Thanks @s130, bit confused now as I’ve read that it could be turbo boost pressure sensor, what do you think?

 

[s130]

Thanks @s130, bit confused now as I’ve read that it could be turbo boost pressure sensor, what do you think?

Difficult to say. You really need to find your -62 suffix information. The P0236 is still a valid code/condition for sensors not having the same expected values.

https://www.kbb.com/obd-ii/p0236/

I found this on a French forum

P0236-62 air leak in the turbocharger, signal comparison anomaly.
The fiat diagnosis for this code leads to analyze only and exclusively the pipes of the turbocharging circuit, as I told you. So intercooler, intake sleeves and also the rigid iron pipe that comes out of the turbine ... the one fixed with the two allen screws and 13 screws. That for example I happened to find one bent right in the flange due to a blow and caught just the same error.

I've personally never had a turbo and associated sensor issue to diagnose and fix so can only offer all the above information to try and help you. Maybe someone else will chime in with better experience.

 

[varesecrazy]

Thanks @s130, bit confused now as I’ve read that it could be turbo boost pressure sensor, what do you think?

Hi

weve had a few failures reported of the hard plastic section of intercooler pipework

Seems to be a 2 door 500 specific issue...

 

[Fabs29]

Thanks for all the support, made a video to show what happens from a stand still (private road could only get to 4th gear)

 

[Keith Spencer]

Easy way to find any leaks is to pressurise the whole intake with a smoke machine, besides a good look see.

 

[Fabs29]

Easy way to find any leaks is to pressurise the whole intake with a smoke machine, besides a good look see.

Thanks Keith, wish I had one, can I use brake cleaner to detect leaks?

 

[Fabs29]

Hi

weve had a few failures reported of the hard plastic section of intercooler pipework

Seems to be a 2 door 500 specific issue...

Thanks @varesecrazy, can I access these from the engine bay or do I need to lift the car?

 

[Keith Spencer]

Thanks Keith, wish I had one, can I use brake cleaner to detect leaks?

The purpose of using brake cleaner is for the engine to suck it in at a point of air ingress and it provides additional fuel so the engine revs up slightly. This guys problem is on the pressure side from the turbo so it would have no effect, but a smoke test of all would do no harm.

 

[Fabs29]

The purpose of using brake cleaner is for the engine to suck it in at a point of air ingress and it provides additional fuel so the engine revs up slightly. This guys problem is on the pressure side from the turbo so it would have no effect, but a smoke test of all would do no harm.

Thanks Keith, where could I hire a smoke tester from?

 

[Keith Spencer]

Thanks Keith, where could I hire a smoke tester from?

Not sure, Google it and see! May be cheaper to buy 1

 

[Fabs29]

Thanks again @Keith Spencer found one, picking it up tomorrow, where do I attach it to so that the smoke goes through the entire system?

Not sure, Google it and see! May be cheaper to buy 1

 

[Keith Spencer]

Thanks Keith, where could I hire a smoke tester from?

Smoke Leak Detector EVAP Smoke Leak Detector Locator SDT103 Automotive Fuel Leak Detectors Tester Car Pipe Leakage Tester with Adjustable Smoke Flow Meter for 12V Vehicles https://amzn.eu/d/7W5nMX1
On amazon £115

 

[Keith Spencer]

Thanks again @Keith Spencer found one, picking it up tomorrow, where do I attach it to so that the smoke goes through the entire system?

Best way is to remove the air filter and fit into the pipe leading to the maf sensor. Any leaks on the filter side of the maf are not important. Ensure you have a good seal in the inlet tube as it will apply a low pressure to the smoke. You are looking for small traces of smoke so do it in a sheltered area no wind or breeze. Use a strong torch or light to see the wisps. Good luck let me know how it goes.

 

[Fabs29]

I might have found the culprit, found a slit on the underneath of the Intercooler hose, need to order a replacement and see if it cures the issue.

 

[Keith Spencer]

I might have found the culprit, found a slit on the underneath of the Intercooler hose, need to order a replacement and see if it cures the issue.

Hi fab,
Do a MAP graphed live data scan b4 you fix and 1 after. You will then see any differences in the turbo boost pressure and know that you found the culprit or just a contributor. Hope you have and good luck.

 

[Fabs29]

Patched the intercooler hose whilst replacement arrives, briefly tested the car and the boost looks like is building as normal

 

[Keith Spencer]

Patched the intercooler hose whilst replacement arrives, briefly tested the car and the boost looks like is building as normal

Excellent well done

 

[Fabs29]

Hi fab,
Do a MAP graphed live data scan b4 you fix and 1 after. You will then see any differences in the turbo boost pressure and know that you found the culprit or just a contributor. Hope you have and good luck.

Sorry didn’t have the scanner to do b4 fix, this is what it is now