therealboss Posted July 31, 2009 Share Posted July 31, 2009 I have a 2004 TD4 that has been running like a dream but now I have a small problem. From tickover up to about 1500 rpm its VERY slow and will stall when I pull off at the lights or a junction. Once she is over 1500 RPM its fine, will pull well in all gears once the revs are up, I have changed the following items:- Air filter Air Flow Sensor Both Intercooler rubber pipes I thought it was better after fitting the new Intercooler pipes but it was only for a short while. I find I get about 35MPG, yes I tend to drive it a little hard but never race it. It only runs off road once or twice a month and then only for a mile or so. 90% of the time I'm the only one in it and most of my driving is on good droad in 5th gear. I don't know if the poor MPG is related to the problem I have with it pulling like a dog below 1500 RPM, sitting on the drive, if I put my foot flat down it takes a bout 4 or 5 seconds to reach 3000 RPM. Quote Link to comment Share on other sites More sharing options...
Blippie Posted July 31, 2009 Share Posted July 31, 2009 Does sound a bit MAFAM-like, even though you say you have attended to this. Have a good read of this http://tuning-diesels.com/75Zt/R75maf.htm and see if it rings true. Some more here... http://tuning-diesels.com/75Zt/R75serv.htm Cheers Blippie Quote Link to comment Share on other sites More sharing options...
therealboss Posted July 31, 2009 Author Share Posted July 31, 2009 Does sound a bit MAFAM-like, even though you say you have attended to this.Have a good read of this http://tuning-diesels.com/75Zt/R75maf.htm and see if it rings true. Some more here... http://tuning-diesels.com/75Zt/R75serv.htm Cheers Blippie Took the vacuum tube off and plugged it with a M6 bolt, it's perfect again thanks.. Would you recommend removing the EGR Valve and fitting a Bypass pipe? Thanks again. Quote Link to comment Share on other sites More sharing options...
Mike the Bike Posted August 8, 2009 Share Posted August 8, 2009 Just followed your thread and I'd recommend the EGR bypass mod. I bought the version recommended by "tuning diesels" and signiuficantly more grunt noticed, even with same fuel map. Mike Quote Link to comment Share on other sites More sharing options...
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