Hi all
I have a issue with my stagea concerning the loss of power., possibly in some sort of LIMP mode?
Car: Stagea C34 1999 model RS4S manual
Mods: Standard turbo, Large front mount intercooler, 12 PSI boost, POD filter & NISTUNE ECU, CAT back 3inch exhaust.. nothing over the top. She is a good tow car !!
Scenario: Driving to work the other day gave the car a boot full to get around some cars, The car during hard acceleration had a massive hesitation ( similar to bouncing off rev limiter) then backfired. I lifted off quickly and then from then on the car has had no power or even very little boost.
It will very slowing accelerate to speed and you can here it labouring ( But not missing or poping or pinging).
Car idles nicely every thing works.. no engine light ... i am also able to rev the with no load and it will rev to 6k to 7k no problem.
No oil leaks,
No blue smoke out of the exhaust.
Engine is idling beautifully sits on 900 rpm rock solid.
everything under the bonnet looks ok.!!!!
Things i have tried:
Did a full ECU check using the consult port and it gave me code 55 - meaning no problem found with ECU.
Disconnect battery for a couple of hrs then reconnected to no eval.
I checked all of the hose's including turbo piping to see if something is blown off.. nothing found
I checked Air flow meter for damage but nothing looks bad. I even disconnected the airflow while the motor was running and it started to hunt then die hence i am thinking air flow meter is OK.
What to try next?
Is there a possibility of a blown turbo?
Can there be a ignition issue?
Can there be other sensors but surely that would cause the ECU to give a problem code??
Co lapsed Cat?
Help would be appreciated!
Rotaron