scubasteve Posted December 11, 2007 Share Posted December 11, 2007 Hi all, new poster here I have a 51 plate TD5 that has developed a fault. I'd be interested if anyone has experiences similar..... When I have to load the engine with plenty of rev's to get up a hill etc, its fine until I have to back off the throttle at the top of the hill, then when I try to accelerate again, I loose all power and get loads of smoke pour from the exhaust. The engine doesn't cut out, and it dose clear eventually (in around 10-30 seconds normally) clear. Its been suggested it might be the EGR valve! Any advice/info greatly received, Steve Quote Link to comment Share on other sites More sharing options...
BogMonster Posted December 11, 2007 Share Posted December 11, 2007 Welcome Yes it may well be the EGR valve sticking and not closing immediately. Locate the small vacuum pipe coming from the valve on the front of the inlet manifold and trace them back to the solenoid unit - you should have 3 air pipes (one to the valve, one to the airbox to vent, and one to the vacuum brake servo) and an electrical connection going into it. Unplug the electrical connection and take it for a drive - if it is the EGR valve and assuming it has closed properly, you should find the problem disappears - the EGR valve is probably opening on part throttle and then sticking open so by unplugging the solenoid you are disabling the system. It will log a fault code in the ECU but that doesn't matter, try it and see what happens. If that fails I have another idea, but try the EGR first Quote Link to comment Share on other sites More sharing options...
scubasteve Posted December 11, 2007 Author Share Posted December 11, 2007 Many thanks for the welcome and the advice. I'll have a look tomorrow and report back. She's been a bit moody of late... Problems with the smoking... Problems with the wiring loom to the injectors....miss fire. Problems with the rear suspension.....Air bags and compressor. Steve Quote Link to comment Share on other sites More sharing options...
scubasteve Posted December 11, 2007 Author Share Posted December 11, 2007 (edited) Just dropped the soundproofing off the top of the engine to have a look..... There seems to be two solenoid units (on rubber mounts), both with 3 pipes coming from each??? Is that correct? Do I have to disconnect both of the electrical connections? Sorry to be a paininthebottom, Steve Edited by Lord Monster of the Bog, to remove a naughty word Edited December 11, 2007 by BogMonster Quote Link to comment Share on other sites More sharing options...
BogMonster Posted December 11, 2007 Share Posted December 11, 2007 Hmm not sure what the second one is.... turbo maybe ... and I don't have a Td5 Discovery handy to confirm where the EGR solenoid is. Don't disconnect the other one because the turbo probably won't The EGR solenoid has: - 1 pipe coming from the valve on the inlet manifold - 1 pipe coming from the brake vacuum circuit - 1 pipe as a breather - this will either go to the air filter box, or to a separate little inline filter The turbo modulator - if that is what the other one is - should not have a pipe going to the EGR valve on the inlet manifold. Post up a pic if still not clear Quote Link to comment Share on other sites More sharing options...
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