Mickt Posted October 15, 2016 Share Posted October 15, 2016 In france at moment the warning light for injection system failure comes on for about 2 secounds then goes out.The engine seems to be running ok,plenty of power.This has happened about 3 times in 1000 miles.Anybody got any ideas. Link to comment Share on other sites More sharing options...
Mickt Posted October 16, 2016 Author Share Posted October 16, 2016 Home now looks like a visit to garage.Perhaps Nick may see this and have an idea. Link to comment Share on other sites More sharing options...
teflon2 Posted October 16, 2016 Share Posted October 16, 2016 Have you checked for water in the fuel filter? just a thought :-S Link to comment Share on other sites More sharing options...
euroserv Posted October 18, 2016 Share Posted October 18, 2016 Hello, The most likely cause is an intermittent poor connection to an injector. Probably number 3. I would not worry about doing anything with it until you get a miss-fire or the warning light stays on for considerably longer. You should however get yourself a couple of spare connector plugs for the loom. They are available for a couple of pounds each and have some cable attached already. This not only helps with the repair but extends the loom a little, and they are known for being a bit short and tight to begin with. Replacing them is a little fiddly but as long as you have a soldering iron, some solder and a little heat shrink it does not take too long. Better to be looking at them than looking for them! Nick Link to comment Share on other sites More sharing options...
Mickt Posted October 18, 2016 Author Share Posted October 18, 2016 Thanks Nicks will go with your suggestions Link to comment Share on other sites More sharing options...
Mickt Posted February 20, 2017 Author Share Posted February 20, 2017 At long last i have had the MH in to garage. They attatched computer and the read out says boost presure sensor is at fault. The garage says these can be cleaned and this should cure the problem , am i doing the right thing by letting them do this or is it wiser to fit a new part Link to comment Share on other sites More sharing options...
gordonaldson Posted February 20, 2017 Share Posted February 20, 2017 Sensor gets clogged with soot deposites, more likely oily soot deposites and cleaning it may only be a temp repair. But your vehicle is 13 years old and sensors like yours that live in poor positions do not live long. For the price of a sensor, around £30 - £50 renew it. Link to comment Share on other sites More sharing options...
Mickt Posted March 1, 2017 Author Share Posted March 1, 2017 Well just got MH back from garage , they changed the boost presure sensor, But when on test drive the injector light comes on . This is getting weird as the light comes on when you accelerate up hill, under load. It come on at about 3000 revs but as soon as you lift off light goes out , then putting foot down again it pulls well up to 3500 revs and the light does not come on. The engine donot seem to loose any power just the light problem. MH is going back into garage next week for MOT and service and further investigation. Link to comment Share on other sites More sharing options...
blaven Posted March 1, 2017 Share Posted March 1, 2017 I had the same on my 2003 JTD. My garage diagnosed a sticking waste gate. They fixed it and it's never been on since. Link to comment Share on other sites More sharing options...
gordonaldson Posted March 1, 2017 Share Posted March 1, 2017 Don't you just wish you could plug in your Laptop into you vans computer and talk to it, ask it what's wrong, when your far away from home. But of course you can use a code reader with some, some even by Bluetooth. But all you get is a fault code so got to carry a booklet of the list of codes and meanings. In this case garage plugged it in and came up with Boost Pressure, not fuel pressure take note, so answer to this fault narrows. Sensor is the easiest option and first to change. But fault still persists as too Boost Pressure and what gives you the Boost is easily explained, go on say it, Turbo...I wouldn't think we have an all singing and all dancing Turbo with variable vanes on this old girl as it would involve strip down. So lets just hope its a simple waste gate that just needs freed. But again lets go further, what operates the waste gate, Turbo actuator of course, usually vacuum of air pressure, or maybe electric coil. Actuator may be goosed. Vac/air hose between actuator and turbo boost side maybe blocked. Good luck and hope garage isn't rubbing their hands. Link to comment Share on other sites More sharing options...
Mickt Posted March 1, 2017 Author Share Posted March 1, 2017 So far garage is good on cost , I have used them for years Link to comment Share on other sites More sharing options...
euroserv Posted March 2, 2017 Share Posted March 2, 2017 If a specific code, even with a description appears; it is all too easy to assume that the device mentioned is faulty. Here is an example. Vehicle: Ford Galaxy 2.3 Petrol. Fault code: "Lambda sensor 2/front". Mechanic assumed that the sensor was faulty, replaced it and problem not gone away. Looked more closely at the code and it's explanation on the diagnostic unit and it said something like: "Voltage out of range". If it had said "short circuit to earth" or "no signal", i would have replaced it but if the voltage is out of range, it more than likely means that it is measuring the exhaust gasses and with too much or too little Oxygens passing, it is sending a reading back to the ECU that indicates that things are not right. In actual fact, the problem was one of the HT leads. It was breaking down and as a result the exhaust gasses were too rich with fuel and hydrocarbons and the lambda sensor quite correctly reported that something was wrong with the exhaust gasses. In the part of the ECU where codes are stored but not live we could see that the engine knock sensor had also reported in sick from time to time which also indicated a combustion problem/mis-fire had been going on for a while. In much the same way, in this case the boost pressure sensor is flagging a problem. It may be that it is fouled and not working correctly or not working at all but it could also be just reporting that the pressure that was expecting was wrong and this could be because of a problem with the turbo, it's hoses, the intercooler, the MAP (Manifold Absolute Pressure) sensor or the air flow meter. Any of which could be giving incorrect readings that lead the boost pressure sensor to be expecting to see one thing but be seeing something quite different, or nothing at all! A proper diagnostic check should be able to see the nature of the erroneous data and take actual measurements at the various sensors to see how viable they are. It takes a lot of experience to distinguish between real problems, the results of potential problems and pure red herrings. Diagnostic tools are just that; tools. They don't provide answers, just clues. Inexpensive code readers have their uses, but are seriously limited when it comes to leading you in the right direction. Link to comment Share on other sites More sharing options...
Mickt Posted March 11, 2017 Author Share Posted March 11, 2017 Update MH has been back to garage and after fitting a new boost sensor which made no difference they gave the MH a full service . They also cleaned the waste gate to make sure the rod was free. Mechanic said air and diesel filter very dirty and that was after only 5000 miles since previous service.Result it now runs ok ,no light on at 3000 revs. Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.