Sillystu84
Member
Hey guys can I pick your brains over head gasket so mine is a 1.2mm thick but they do a 1.3mm thick would it make any difference getting the thicker one ?
Yes it would be wrong.Hey guys can I pick your brains over head gasket so mine is a 1.2mm thick but they do a 1.3mm thick would it make any difference getting the thicker one ?
Update from Finland.Greetings from Finland. We bought Ducato Multijet 180 2017 Euro 6 Comformatic, 4 years ago and we have been using it without problems until last Friday. Mileage now about 93 000 km. Car started to have lack of power just after cold starts and "Check Engine" light lit. After short driving or motor running power comes back and we can drive without problem, but after a bit longer parking problem comes back. Today I went to local repair shop to read out failures and got following error codes: 487-74 (EGR valve position tracking - actuator slipping, 409-14 (EGR Position sensor, electrical test - circuit short to ground or open) and 101-21 (Air mass flow meter drift - signal amplitude < minimum). They did not have time to analyze more and we agreed that I will follow situation and later on they will check again. Later today afternoon I started the engine again and same problem occurred and check engine lit up again. I let the car run for awhile until it run stable, then I started the engine three times and "check engine" turned off. I started to read about this problem and found this topic. Is there something I should know or do? I wonder if our car I facing same problem than you all or is this something else?
58,000miles is a good distance before cooler issues, so may have escaped issues, but there a few with issues at V24 none known @ V28. So in your position i would update.Update from Finland.
I booked time from my local car service and they found out that servo/solenoid of HP EGR is broken (Resistor values were about 80-90ohms). New HP EGR will be ordered and it will be changed. They also found out that software was updated to 0024 version at February 2018. Should I ask them to update it to 0032 version?
Exhaust pipe of my car is not sooty.
Before taking the car to service I was trying to use stardiag bluetooth interface, but unfortunately it did not work. I am now waiting USB/wifi interface and hopefully able to track system with it.
Greetings from Finland. Got car back from service and it seemed to work well during short test drive. HP EGR was changed and software updated to version 32 (previous 24). EGR looked a bit black, but I guess it wasn't that bad. Check attached photos. Perhaps I will try to clean and repair it if I can find servo motor as spare part.Update from Finland.
I booked time from my local car service and they found out that servo/solenoid of HP EGR is broken (Resistor values were about 80-90ohms). New HP EGR will be ordered and it will be changed. They also found out that software was updated to 0024 version at February 2018. Should I ask them to update it to 0032 version?
Exhaust pipe of my car is not sooty.
Before taking the car to service I was trying to use stardiag bluetooth interface, but unfortunately it did not work. I am now waiting USB/wifi interface and hopefully able to track system with it.
That might be the reason indeed. I double checked now from vehicle support page of multiecuscan and for engine management adapter cable should not be used. I will try without it. Thanks!Are you using both cables together? From memory you only use the yellow for specific ECUs like airbag.
For the engine searching you only use the main cable
For cleaning the HP EGR, remove the plastic servo motor assembly. Make a steel cross strap bolting into the servo fixing holes. With a central hole in the cross strap use a long bolt and nut, screw it in progressively and it will fully open the valve as 'a penny on a stick'.
Use caustic soda to dissolve the carbon and flush with clean water. The caustic clean takes only seconds or a minute or so. Don't leave it to soak as caustic dissolves aluminium!
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Cleaning is quick and easy.
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Let us know how you get on
@athoirs reference your DPF photo, were you able to remove it with all the sensors and pipes attached or did you reassemble for the photo purposes?
I still want to find a way to modify the resistance of the LP temp probe so the LP EGR thinks it's hot and thus will close the EGR drive motor to reduce or stop the exhaust passage. Alternative change the EGR internal cam.
@athoirs reference your DPF photo, were you able to remove it with all the sensors and pipes attached or did you reassemble for the photo purposes?
I still want to find a way to modify the resistance of the LP temp probe so the LP EGR thinks it's hot and thus will close the EGR drive motor to reduce or stop the exhaust passage. Alternative change the EGR internal cam.
Sounds like a very complicated and unnecessary way to duplicate an analogue potentiometer. I like @Fredastaire 's idea to offset the temp reading by adjusting the resistance value. It will likely work, but one thing that may upset the idea is that FIAT engineering cross references a number of sensors and if one is noted to be "out of whack" with others in the circuit then it will ignore that sensor and throw a fault code for the corrupted sensor. I know from my experience that all of the temperature sensors in the exhaust/DPF system are cross referenced - when I took one of them to far out of the expected measurement envelope the ECU told me. However, the LP EGR temp sensor may well be isolated enough not to have the same issue - so well worth a try Fred. When I measured the impedance transfer curve of the sensor I was concerned with I used an AUTEL DS808 which gave me not only the temp readout in C, but also the voltage on the sensor. From that I derived the resistance, knowing the value of the pull-up resistor in the ECU. MES did not record the voltage - just the temp in C. You could use MES to measure the temp, and use a DVM to measure the voltage - just a bit more faff to get the data.I haven't tried this but have you considered the AD5171 digital potentiometer and an Arduinoto to mimic the temp probe?
I've no idea what resistance range the temp probe has or ever measured the output from a Ducato's probe.
Because of the difficulty in physicaly getting at the sensor i did suggest to @Fredastaire getting a spare sensor and doing a calibration eg @0C water frezzing 100 C boiling and measuring with both MES and multimeter. and maybe a Ktype thermocouple and meter (available). Ive got the kit and capability if a sensor turned up at my door. Whats the part number.You could use MES to measure the temp, and use a DVM to measure the voltage - just a bit more faff to get the data.