stevemochan Posted July 17, 2006 Posted July 17, 2006 Hi guys just a theoretical question.What would happen if my EGR pipes were leaking badly? As i have found that both pipes have lost a bolt and the others have come loose under the plenum. The car ticks over but wont drive over 2000rpm however it will rev when not under load. Could this be the cause of my problem? Thanks Steve. Quote
Rich666 Posted July 17, 2006 Posted July 17, 2006 Hi guys just a theoretical question.What would happen if my EGR pipes were leaking badly? As i have found that both pipes have lost a bolt and the others have come loose under the plenum. The car ticks over but wont drive over 2000rpm however it will rev when not under load. Could this be the cause of my problem? Thanks Steve. sounds like your air flow meter's disconnected or failed... but can't remember if the failsafe works under no load or not?!? Limiting the revs to 2000 will be the ECU (assuming you mean EXACTLY 2000 rather than struggling if you see what I mean). Rich Quote
AndyP Posted July 17, 2006 Posted July 17, 2006 IIRC the airflow meter limit kicks in around 2400 rpm - the exact figure is in the manual somewhere ... Quote
stevemochan Posted July 17, 2006 Author Posted July 17, 2006 IIRC the airflow meter limit kicks in around 2400 rpm - the exact figure is in the manual somewhere ... What i cant understand is that it only does it while im driving.At a standstill it will rev its nuts off. Quote
AndyP Posted July 17, 2006 Posted July 17, 2006 Hmmm, sounds like a different problem then. Having air leaks will screw up all sorts of things though. Quote
Smithy Posted July 17, 2006 Posted July 17, 2006 What i cant understand is that it only does it while im driving.At a standstill it will rev its nuts off. A knackered MAF will allow the engine to run mate, dunno if it's because the ECU is a closed loop application until around 2.5k not sure. Totally disconnect it and see if the symtoms are excatly the same. smithy Quote
stevemochan Posted July 18, 2006 Author Posted July 18, 2006 A knackered MAF will allow the engine to run mate, dunno if it's because the ECU is a closed loop application until around 2.5k not sure. Totally disconnect it and see if the symtoms are excatly the same. smithy Cheers guys i will try the above and see what happens. Quote
jimmer Posted July 18, 2006 Posted July 18, 2006 your fault is purely down to the loose egr pipe.the symptons youve described are typical of a serious boost leak.when the turbos boost which is in the range you described the car will try to compensate but cant.the fault wont appear at standstill as the engine is not under the same load as when you drive it.fix the leak and im pretty sure the fault will be cured.seen an identical problem to this before and a leaking intercooler was the problem. Quote
Royal Posted July 19, 2006 Posted July 19, 2006 There's guides on tt.net showing you how to remove all the egr gubbins mate, you can then just block the pipes off. Quote
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