fender1234 Posted April 22, 2009 Share Posted April 22, 2009 Hi again, strange problem last night when i got home i switched off the ignition on my 200tdi 90 but the engine carried on running and then died after about 10 seconds. Does anyone know the possible things this could be and how i go about testing it? cheers Quote Link to comment Share on other sites More sharing options...
disco_al Posted April 22, 2009 Share Posted April 22, 2009 sounds like the stop solenoid to me Quote Link to comment Share on other sites More sharing options...
Mo Murphy Posted April 22, 2009 Share Posted April 22, 2009 I'll agree with Al, next time it overruns pull the wire off the stop solenoid on the FI pump and see if that stops it straight away. HTH Mo Quote Link to comment Share on other sites More sharing options...
fender1234 Posted April 22, 2009 Author Share Posted April 22, 2009 ok will try that. when i turn the ignition off the battery light comes on while the engine is running and then goes out when it dies dont know wether this means anything or not. Quote Link to comment Share on other sites More sharing options...
sgnas Posted April 22, 2009 Share Posted April 22, 2009 If the stop solenid is mechanically sticky pulling the electric supply will not make it stop any quicker! However, it is a useful test to see if you have a mechanical or electrical problem. Start engine, pull electric supply off. If it stops dead, you have an electrical problem. If it over runs, you have a mechanical problem. If it is electrical problem, then consider anything with a permanent live to be "backfeeding" the circuit. It takes 12v to open the solenoid but (from experience) only 6v to keep it open. Some TD5s will not stop the engine if you hold the brakes on as the brake light circuit somehow backfeeds to the stop solenoid! It could be your radio or any accesory plugged into the ciggy lighter. If it is mechanical then the solenoid needs removing. I'm sure it is in the tech archive. Quote Link to comment Share on other sites More sharing options...
fender1234 Posted April 22, 2009 Author Share Posted April 22, 2009 ok cheers all i will check at lunch time and let you know the situation. Quote Link to comment Share on other sites More sharing options...
Mo Murphy Posted April 22, 2009 Share Posted April 22, 2009 If the stop solenid is mechanically sticky pulling the electric supply will not make it stop any quicker!However, it is a useful test to see if you have a mechanical or electrical problem. Quite right, I was thinking spurious electrical supply problem, rather than the jamming open for which they are well known and which I should have mentioned for a more complete answer. Worst case, it could be running on engine oil, which is not good. I'll hang my head in shame for a while Mo Quote Link to comment Share on other sites More sharing options...
fender1234 Posted April 22, 2009 Author Share Posted April 22, 2009 I went to try what you all said over lunch but the problem isnt happening now so im not sure if it only happens when upto temperature or somthing similar Quote Link to comment Share on other sites More sharing options...
markyboy Posted April 22, 2009 Share Posted April 22, 2009 ok will try that. when i turn the ignition off the battery light comes on while the engine is running and then goes out when it dies dont know wether this means anything or not. That's normal and is unrelated to your problem. Mark. Quote Link to comment Share on other sites More sharing options...
pinny Posted April 22, 2009 Share Posted April 22, 2009 i know its not lr related but on our jcb3cxs if you turn the ignition off with the heater fan running the engine will run on only for a couple of seconds but it appears the fan motor supplies enough brief power to keep the stop solenoid open if that makes sense,chris. Quote Link to comment Share on other sites More sharing options...
sgnas Posted April 22, 2009 Share Posted April 22, 2009 Yep, momentum of the fan makes it run on. That then works (briefly) as a generator/dynamo and provides enough power to keep the stop solenoid open. Quote Link to comment Share on other sites More sharing options...
fender1234 Posted April 23, 2009 Author Share Posted April 23, 2009 ok i will try it with the heater on and the engine electric fan to see if they are the cause Quote Link to comment Share on other sites More sharing options...
santalars Posted April 23, 2009 Share Posted April 23, 2009 All is said above: disconnect the solenoid and see whats happening. I have the problem myself. In my case it's mechanical. Fine metal powder is building up in the (magnetic when open) solenoid and prevents the pin from sliding down. I have to clean it from time to time and it's usually fine for two months before it occurs again. I know, the root of the problem is in the injection pump which will need as full service at some stage. However, I keep postponing it as the engine runs extremely well and the service will cost the same now or later. Quote Link to comment Share on other sites More sharing options...
western Posted April 23, 2009 Share Posted April 23, 2009 when you get round to having the injection pump fixed, tell the recbuiler you want the latest spec 300Tdi cam & roller fitting, had mine done years ago & it's been fine since. Quote Link to comment Share on other sites More sharing options...
fender1234 Posted April 23, 2009 Author Share Posted April 23, 2009 im still trying to test it but it has not been doing it since, i tryed with the fan and heater but that didnt do it so i will just wait until it does it next and try taking the wire off the injection pump then. Quote Link to comment Share on other sites More sharing options...
Milemarker Type S Posted April 23, 2009 Share Posted April 23, 2009 My old 90 (2.5 NA Diesel) would not switch off when anything was plugged into the lighter socket... electrical gremlins opening new boxes of elastictrickery again! Quote Link to comment Share on other sites More sharing options...
David Wright Posted April 24, 2009 Share Posted April 24, 2009 My K reg 200tdi disco had exactly this problem and it was diagnosed as the swash plate in the injector pump producing swarf which in turn prevented the fuel solenoid from closing. Apparently this was a very common problem with 200tdi s and mine was even fixed for free by Bosch but that was some 10 years ago. Quote Link to comment Share on other sites More sharing options...
jimmy_neutron Posted April 24, 2009 Share Posted April 24, 2009 My K reg 200tdi disco had exactly this problem and it was diagnosed as the swash plate in the injector pump producing swarf which in turn prevented the fuel solenoid from closing. Apparently this was a very common problem with 200tdi s and mine was even fixed for free by Bosch but that was some 10 years ago. As above ... remove the solenoid and if your lucky you can sometimes see the offending bit of swarf and gently pull it out. Often though its a pump strip down job which aint cheap. If the pump is also leaking then i'd cosider getting it resealed now anyway and get it well checked out as it will prob fail its next mot anyway. Quote Link to comment Share on other sites More sharing options...
western Posted April 24, 2009 Share Posted April 24, 2009 My K reg 200tdi disco had exactly this problem and it was diagnosed as the swash plate in the injector pump producing swarf which in turn prevented the fuel solenoid from closing. Apparently this was a very common problem with 200tdi s and mine was even fixed for free by Bosch but that was some 10 years ago. Yep, same happened to my Injrction pump, but cost me near 400quid to have fixed/calibrated, been fine since Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.