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The temp gauge reads normal (half way) when up to temperature. That is an interesting point though. We also have an iveco van we bought to convert to a camper and coolant along with fuel temps effect how the ECU manages the engine. I will do a live data session on it today and see what the temp gauge is reading and post here what the results are. Thank you Camturbo |
We did some live data testing today and these are the results:
At Idle: Coolant Temp - 49.6 degrees C Inlet air temp - 11.2 degrees C MAF - 52.10 kg/h Boost Pressure - 991 hpa Atmospheric - 967 hpa Stationary at 1500 RPM Coolant Temp - 53.4 degrees C Inlet air temp - 10.3 MAF - 70.70 kg/h Boost Pressure - 1039 hpa Atmospheric - 967 hpa Stationary at 2500 RPM Coolant Temp - 54.1 degrees C Inlet air temp - 10.3 degrees C MAF - 212.30 kg/h Boost Pressure - 1134 hpa Atmospheric - 968 hpa Driving at 60mph (2000 RPM) Coolant Temp - 87.8 degrees C Inlet air temp - 8.3 degrees C MAF - 200.60 kg/h Boost Pressure - 1487 hpa Atmospheric - 980 hpa Driving at 70mph (2500 RPM Slightly downhill though) Coolant Temp - 87.1 degrees C Inlet air temp - 8.4 degrees C MAF - 191.40 kg/h Boost Pressure - 1105 hpa Atmospheric - 981 hpa Another test was to accelerate up to 4000 RPM and the boost pressure read 2170 hpa. After the drive we let it idle and these were the readings: Coolant Temp - 86.7 degrees C Inlet air temp - 8.4 degrees C MAF - 48.70 kg/h Boost Pressure - 1026 hpa Atmospheric - 973 hpa We did notice that the boost pressure did hang at its high value for 3 to 4 seconds before dropping off when easing off the accelerator pedal. Is this normal?? Hopefully this will help someone with far greater knowledge than us to figure out what our issue is... |
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what does your live data show when it drops into limp mode?
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It sounds as though the VNT is sticking slightly on its way back at cooler operating temperatures and frees itself to perform pretty normally on a hot engine. |
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When it goes into limp mode, I slow down and just consciously limp it home. I have never tried just pushing it again. Tomorrow, I am going to try the same and see if it acts the same or stays in limp mode. |
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Does sound as if it sticking if you throttled off then back on again and it disappeared. Like you say try again tomorrow and see if it happens again. Maybe its got some carbon build up on the turbo vanes. Cant help you with cleaning it,apart from giving it a good caning. Hopefully someone else will be able to help.
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That's my best guess based on the behaviour you've described. |
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