jryanwright Posted April 8, 2013 Share Posted April 8, 2013 About 50% of the time, when I turn off my ignition, the engine does not shut off. I've noticed that if I turn it off VERY slowly, almost half-way, it will sluggishly turn off. But if I just turn the key to off, the engine stays on. I can even take the key out and he keeps running! Is this common? What do I do?? Quote Link to comment Share on other sites More sharing options...
western Posted April 8, 2013 Share Posted April 8, 2013 what engine ? diesel or petrol ? Quote Link to comment Share on other sites More sharing options...
jryanwright Posted April 8, 2013 Author Share Posted April 8, 2013 Diesel (Defender 90 2.5 TD 1988) Quote Link to comment Share on other sites More sharing options...
Tanuki Posted April 8, 2013 Share Posted April 8, 2013 Sounds to me like you have a defective [sticking] contact in the ignition switch which is failing to disconnect the fuel-solenoid when you turn the ignition-switch to '0'. Alternatively, it's possible for some alternator-related problems to continue to feed power to the fuel-solenoid even when you turn the key to '0'. --G6Tanuki. "Do not despize the snake for having no horns, for who is to say he will not become a dragon?" Quote Link to comment Share on other sites More sharing options...
pete3000 Posted April 8, 2013 Share Posted April 8, 2013 either dodgy ign switch or sounds like your stop solenoid on fuel injection pump has given up. try pulling the white wire off to see if this will stop engine. P.S don't lean in from front of engine amongst moving belts fans etc. make a slave extension length wire up and do it from the comfort of nowhere near the moving parts. Quote Link to comment Share on other sites More sharing options...
bluespanner Posted April 8, 2013 Share Posted April 8, 2013 Sounds like the diode behind the dash, allowing a small voltage to back feed. A stop solenoid only needs a couple of volts to hold it in. Found this out the other month when my 110 did the same. Quote Link to comment Share on other sites More sharing options...
jryanwright Posted April 8, 2013 Author Share Posted April 8, 2013 Thanks guys. Bluespanner, what's the best way to check if it is the diode behind the dash and how do I change it? Quote Link to comment Share on other sites More sharing options...
stephensmith Posted May 20, 2013 Share Posted May 20, 2013 Tiny particles in the chamber that the stop solenoid screws into can prevent the engine starting or stopping. Unscrew the stop solenoid and suck out the bits with a syringe and short length of tubing. If there are bits there, even installing a new shut off solenoid will not cure it. Quote Link to comment Share on other sites More sharing options...
western Posted May 20, 2013 Share Posted May 20, 2013 Tiny particles in the chamber that the stop solenoid screws into can prevent the engine starting or stopping. Unscrew the stop solenoid and suck out the bits with a syringe and short length of tubing. If there are bits there, even installing a new shut off solenoid will not cure it. a FIP overhaul will be required, I had similar issues on my 200tdi FIP a few years ago, after a rebuild it's been fine since. Quote Link to comment Share on other sites More sharing options...
Aragorn Posted May 20, 2013 Share Posted May 20, 2013 First thing to do, next time it refuses to shut down, is pull the lead off the stop solenoid. If it stops, then its an electrical issue, if it doesnt then its a mechanical issue with the solenoid. Quote Link to comment Share on other sites More sharing options...
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