Pete0309 Posted February 25, 2018 Author Report Share Posted February 25, 2018 Also forgot to add that the cam sensor seemed very oily so we cleaned that out as well. Have also checked the fuses and all are ok. Quote Link to comment Share on other sites More sharing options...
mk2 Posted February 25, 2018 Report Share Posted February 25, 2018 1 hour ago, Pete0309 said: where is the crank sensor, do you have a pic or diagram? Not having ever worked on a 1.4, i think it's down behind the oil filter, bolted to the front of the block. Google how much a new one is and you'll find a pic of what it looks like... Quote Link to comment Share on other sites More sharing options...
mk2 Posted February 25, 2018 Report Share Posted February 25, 2018 1 hour ago, Skezza said: I love Phaetons. Poor man's Bentley. It is a bentley in disguise... just about the most understated luxury car out there. Just a nice car imho. I wish i could afford one, and the running costs. Quote Link to comment Share on other sites More sharing options...
mk2 Posted February 25, 2018 Report Share Posted February 25, 2018 1 hour ago, Pete0309 said: Also forgot to add that the cam sensor seemed very oily so we cleaned that out as well. Have also checked the fuses and all are ok. Unlikely to be cam sensor. Engine should still run without a cam sensor... Quote Link to comment Share on other sites More sharing options...
Rich Posted February 25, 2018 Report Share Posted February 25, 2018 I know all about what a phaeton is and then some. the crank sensor is behind the starter motor on the back of the block, it is fun to get to but it is a viable option here. Quote Link to comment Share on other sites More sharing options...
Pete0309 Posted February 25, 2018 Author Report Share Posted February 25, 2018 thanks, will try to get to crank sensor. one more question: with a diagnostics reader we are able to see rpm readings when cranking. which sensor would that be reading from? cam or crank? Quote Link to comment Share on other sites More sharing options...
mk2 Posted February 25, 2018 Report Share Posted February 25, 2018 3 hours ago, Rich said: I know all about what a phaeton is and then some. You've worked on a Phaeton Rich?! respect. @Pete0309 not sure the diagnostics link will work while cranking, as the volts are too low and it usually drops out. But you could start a log and see if it catches the rpm. If you get an RPM reading, it means the ecu is seeing engine rotation, and it should be chucking out ignition pulses to the coil pack. If you still get no spark, it'll almost certainly be either the leads or the coil. Very unlikely to be a faulty ECU output. Quote Link to comment Share on other sites More sharing options...
Pete0309 Posted February 25, 2018 Author Report Share Posted February 25, 2018 Hi mk2, We do get RPM graph on diag machine when cranking, so then tried disconnecting the crank sensor and did diagnostics again. Still getting an RPM graph when cranking, hence wondering which sensor that would be? With it disconnected we got a fault code about the engine speed sensor, so thinking that probably means the crank sensor is OK as it noticed we disconnected it? When testing for spark it was like we occasionally get a weak spark, but very intermittent. Quote Link to comment Share on other sites More sharing options...
mk2 Posted February 25, 2018 Report Share Posted February 25, 2018 Yeah it sounds like both crank and cam sensor are ok. My guess is the coil pack or leads or both. You could try baking the coil pack in an oven at about 80c for an hour then putting it back on the car. Drying it out might be a temporary fix just to get it firing up. Quote Link to comment Share on other sites More sharing options...
Pete0309 Posted March 9, 2018 Author Report Share Posted March 9, 2018 Took it to the garage - it was the coils. Quote Link to comment Share on other sites More sharing options...
mk2 Posted March 9, 2018 Report Share Posted March 9, 2018 yeah, the usual culprit of early 2000 vdubs... glad it's now sorted and, of course, running like a dream again! Quote Link to comment Share on other sites More sharing options...
Rich Posted March 10, 2018 Report Share Posted March 10, 2018 strange for all four to go! Quote Link to comment Share on other sites More sharing options...
mk2 Posted March 10, 2018 Report Share Posted March 10, 2018 er, hang on.... did you mean coil or coilS? Big difference in the way everything works. on one type, you have a coil block thing directly on each plug, the other way you have a chunky thing with ht leads plugging into it. i'm guessing the latter...? like rich says, very very extremely unusually rare for all four individual mini coils to go at the same time (one per plug)....? Quote Link to comment Share on other sites More sharing options...
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