Dman 5 Report post Posted February 6, 2013 Well the car has be running ok for a week or so,but today when i had it over 4,000 rpm the engine management light starts flashing for about 10 seconds then goes out. So tried it again in sport mode (its a Q-system by the way) and when the engine revs go high the light flashes...but does go out Any ideas would be most greatful Quote Share this post Link to post Share on other sites
Smaky 73 Report post Posted February 6, 2013 Does it feel like it's holding back a bit? A flashing EML is normally the ECUs way of telling you there is a faulty Cat, this is picked up by the pre and post cat Lambdas, plug in and get the codes out of the engine ECU and this should confirm it Quote Share this post Link to post Share on other sites
Dman 5 Report post Posted February 6, 2013 Yes i would say it does feel like its holding back a little Quote Share this post Link to post Share on other sites
Smaky 73 Report post Posted February 6, 2013 I would definately suspect a blocked or faulty cat, is there a tinny rattle under the car when you first start her from cold? Quote Share this post Link to post Share on other sites
Dman 5 Report post Posted February 7, 2013 Cannot say that i have heard any rattles.... Quote Share this post Link to post Share on other sites
Smaky 73 Report post Posted February 7, 2013 I'd think it is blocked then. Quote Share this post Link to post Share on other sites
Dman 5 Report post Posted February 8, 2013 This may be a stupid question,but there is only 1 CAT on the car is there,i seen the double one after the flex pipe,but there is a small box thing on the downpipe...what is that... Quote Share this post Link to post Share on other sites
Smaky 73 Report post Posted February 8, 2013 PM me the chassis number and I'll check for you... just need the last 7 digits Quote Share this post Link to post Share on other sites
Dman 5 Report post Posted February 8, 2013 PM me the chassis number and I'll check for you... just need the last 7 digits PM sent..cheers Quote Share this post Link to post Share on other sites
Smaky 73 Report post Posted February 9, 2013 It's a 2.5 V6 CF3 with 4 Cats ( ECU should be mounted on the inlet manifold), in which case the first thing I'd do is check for inlet splits then this weather is clean the MAF and replace the air filter, that way you'll prove it's not freezing up from getting wet and the air is geting in. After that it's going to get expensive. Possibly one of the cats, lambdas or MAF. Quote Share this post Link to post Share on other sites
Dman 5 Report post Posted February 10, 2013 New air filter and Bosch MAF fitted about a month ago,as for the inlet splits is that just the large inlet hose ?? 4 CATS ? oh dear...is there anyway of checking each CAT ? Quote Share this post Link to post Share on other sites
Smaky 73 Report post Posted February 10, 2013 Yep, the hose from the MAF to the TB Quote Share this post Link to post Share on other sites
Dman 5 Report post Posted February 12, 2013 The rubber hose appears to be ok,looks as if there are slight cracks in the joints but does not appear to go all the way through. Im going to change it to eliminate it Quote Share this post Link to post Share on other sites
