florin Posted January 27, 2014 Share Posted January 27, 2014 Hi, Just finished major work on my TD5 and it won't start. Here are the items I changed that might have an impact: - transfer box - gear box - Dual mass fly wheel - Clutch - Fuel pump - Fuel filter (on the water sensor at the bottom of the filter the brown wire seem to be cut by previous owner so I fixed that) - The battery was removed (with the 15 sec procedure) for about 3 months but the immobilizer seems to work correctly (lock = red blinking light on the dashboard + 3 warning lights and unlock = no red light + no alarm + warning light continuous for a second or two) I did not prime the fuel filter. I did do the purge 3 times (I can hear no air being squirted any more). As per items above I did remove a lot of wires but I did check and all seem to be connected OK. Is there a procedure I can use to eliminate possible faults? Should I repeat the purge procedure a few more times? Can it be the flywheel sensor not being connected properly or not reading well the new dual mass flywheel? Would that prevent firing up? Is it worth connecting a ODB2 reader and trying to get fault codes? (All was good before I started the work) Thank you for any advice you might have. Quote Link to comment Share on other sites More sharing options...
dave88sw Posted January 27, 2014 Share Posted January 27, 2014 If you can get hold of an obd reader that would be a good starting point. Use live data to check for a signal from the crank position sensor. I presume it's cranking over just not firing? Quote Link to comment Share on other sites More sharing options...
landy andy. Posted January 27, 2014 Share Posted January 27, 2014 It will not fire if crank sensor (fly wheel sensor) is damaged, or missing. Very common to damage these when doing gearbox work on the Td5's, you can also damage their wiring trapping it in the bell housing. Andy Quote Link to comment Share on other sites More sharing options...
florin Posted January 28, 2014 Author Share Posted January 28, 2014 Thank you for the answers. @dave88sw: Yes, it's cranking over with no sign of firing whatsoever. When I cleaned the bellhousing I did take the sensor off cleaned it, and put it back in quite carefully. Again, thank you for the suggestions. Quote Link to comment Share on other sites More sharing options...
Divster Posted January 29, 2014 Share Posted January 29, 2014 How long are you cranking it for? Even after purging the filter it can take a fair bIt of cranking to get it to fire Quote Link to comment Share on other sites More sharing options...
V8 Freak Posted January 29, 2014 Share Posted January 29, 2014 Although you probably haven't bashed the bulkhead at all, have you tried depressing the cut-off button on the bulkhead to make sure it's not tripped? Quote Link to comment Share on other sites More sharing options...
HoSS Posted January 30, 2014 Share Posted January 30, 2014 The accident cut-off would stop the fuel pump no? The pump is running. Quote Link to comment Share on other sites More sharing options...
V8 Freak Posted January 30, 2014 Share Posted January 30, 2014 Wasn't sure if it would, but I guess you would be right. Should be totally dead if tripped On a separate note, with a friends D2 last year we heard pump running, even gurgles when purging.. Wouldn't fire the engine... Pump motor and pipes had become dislodged in the tank. Replaced with new pump and started first time after a purge. I know you fitted a new pump, but was it of good pedigree? And, although colour coded, did the pipes go onto the pump in the correct holes on the top of the pump? Neil Quote Link to comment Share on other sites More sharing options...
HoSS Posted January 30, 2014 Share Posted January 30, 2014 The pump was just replaced as the old one got damaged when the tank was removed. Is there a place one can measure fuel rail pressure on the TD5? Or at least a purge point to check fuel is getting there? Quote Link to comment Share on other sites More sharing options...
HoSS Posted February 1, 2014 Share Posted February 1, 2014 Just to close - it was the CPS, the connector had dropped off. Quote Link to comment Share on other sites More sharing options...
Anderzander Posted February 1, 2014 Share Posted February 1, 2014 Lol. What an excellent cheap fix Quote Link to comment Share on other sites More sharing options...
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