October 2, 2012, 8:28 pm
Hi I'm looking for opinions and Info here..
I have a 2005 tdci mondeo 2.0 130bhp euro 4...
I have noticed that when pulling away this is a sign of what looks like black smoke from exhaust.. Also I noticed that if car is left at idle for approx ten mins or so when you then pull away the black smoke is more of a cloud.. The smoke seems to clear once you get up the rpm's
October 3, 2012, 4:45 pm
check the intercooler pipe for splits(its the large pipe on the bottom of the egr valve) also when was the egr valve itself last removed and cleaned ?
October 3, 2012, 9:49 pm
Uh oh MOT fail coming up.
October 6, 2012, 2:39 pm
Hi guys thanks for replys.. Intercooler hoses seem fine I checked them visually an also while holding a rev on the car the pipes all become firm with no signs of leaks..
But I seem to keep get the fault codes
P0401 and p0405 poppin up.. When clear car will drive a few miles without light then after sits turned of for approx ten mins and started again light appears..(engine light)..
I have since tried a new egr valve to no affect.. Any ideas what this is.. The black smoke seems to have calmed itself..
My train of thought is more why is these 2 codes re appearing...
P0405 says... Exhaust gas recirculation sensors A circuit low
P0401 says..exhaust gas recirculation flow insufficient detected...
Driving me mad... :-(
October 6, 2012, 2:44 pm
Did you replace the EGR sensor or check the wiring?
October 6, 2012, 3:27 pm
Yes replaced egr but no difference..I wouldn't know what values to be looking for at the egr 3 pin plug.. Would it be possible the maf sensor is faulty
October 6, 2012, 5:02 pm
Ok just tested sensor in both old n new egr valves both read 1.5 volts closed and 4.5 volts open..
Is there something I'm missing that's causing this fault... Really drivin me mad
October 14, 2012, 7:14 am
hi iv just put an egr blank plate in and stopped all smoke ,, now getting better acceleration and better fuel economy
October 16, 2012, 8:24 pm
If u blank egr does this not leave engine check light on all the time on euro 4.?.
I had my vacum regulator go faulty which gives same effect as blanking egr and light stayed on
Full Colour Version: Black Smoke
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