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Old 07 December 2007, 08:26   #11
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Did you block the small pipe that controls the EGR valve?

(Don't know if it's connected to the ECU but for a few seconds winding a bolt into the end of the pipe it's something to try)
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Old 07 December 2007, 08:28   #12
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Dunno Tim, could be lots of things. Did you blank the end of the vacuum pipe. Some of the later cars were a bit more electronic. Perhaps the EGR is being watched and now it thinks it's faulty..just guessing.

A more serious thing is that oil from the turbo seals can feed the engine and it can rev out of control. Mine failed in a bigger way and fed the sump oil into the intercooler up to a level where it blocked off the air supply, thankfully because I've a pal who suffered this type of failure in a queue on a dual carriageway. The engine ran away with itself and couldn't be stopped. He got out of the Disco in case the flywheel came away and he left it to rev flat out until it consumed the sump oil. Apparently, the was a smoke screen for miles. The Disco had only covered 30k, too.
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Old 07 December 2007, 12:52   #13
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The engine ran away with itself and couldn't be stopped.
itt woz inn de nooz yew nobbur. itt woz stil doin fawty myles an hower onn de parris too birlin rode wen de jirmans stopt itt att de seegfreed lyne wiv a panzirforst.

thay woz lukky itt wazunt a mirlin

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Old 08 December 2007, 19:06   #14
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I only put the blanking plate on mine - don't think you are supposed to fiddle with any pipes!!!

Another possibility is to make sure the engine has a good earth - it can happen that the earth fails and then uses the throttle cable............
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Old 08 December 2007, 23:20   #15
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I only put the blanking plate on mine - don't think you are supposed to fiddle with any pipes!!!

Another possibility is to make sure the engine has a good earth - it can happen that the earth fails and then uses the throttle cable............

I don't think it's a good idea to leave open a vacuum pipe that was previously sealed by it's connection to the EGR valve. It's still connected to the vacuum pump and brake servo if nothing else.
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Old 09 December 2007, 05:18   #16
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Its very odd. Since my last post it's been behaving. It seemed to rev up for about an hour after I did the work. Now it just sounds a bit rough when starting - it's defiantly not right though. I'm going to return the EGR valve to how it was before later in the hope that will solve it.
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Old 09 December 2007, 07:52   #17
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A bit of advice for the future, Tim. Never ever change, adjust or replace more than one thing at a time.
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Old 09 December 2007, 09:48   #18
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Its very odd. Since my last post it's been behaving. It seemed to rev up for about an hour after I did the work. Now it just sounds a bit rough when starting - it's defiantly not right though. I'm going to return the EGR valve to how it was before later in the hope that will solve it.

Leave the blanking plate in - just connect the bloody pipe back up!!!
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Old 09 December 2007, 09:48   #19
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A bit of advice for the future, Tim. Never ever change, adjust or replace more than one thing at a time.
Hear hear!!!
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Old 09 December 2007, 23:31   #20
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Leave the blanking plate in - just connect the bloody pipe back up!!!
Doesn't the pipe/valve connect to the hole the blanking plate is covering ??
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