bagi13 Posted October 7, 2014 Share Posted October 7, 2014 Hi guys Im new to this forum. Looking for advice. My 2004 tdci cmax looses power while driving. When I pull over and start the car again it seems to run fine. I've read that blanking my egr will help stop this problem. I have no warning lights on my dash when the above happens. Any advice is gratefully appreciated Quote Link to comment Share on other sites More sharing options...
supercmaxer Posted October 7, 2014 Share Posted October 7, 2014 Have you got a code reader? Cheap as chips well not quite. I have a d900 of eBay £20 I think worth an investment. What engine size you have ? I have a blanking plate with a 10mm hole it defo runs smoother. Quote Link to comment Share on other sites More sharing options...
bagi13 Posted October 7, 2014 Author Share Posted October 7, 2014 Hi No code reader but she has been plugged in and no issues were found. Ive read that blanking the egr will stop there car loosing power. Quote Link to comment Share on other sites More sharing options...
supercmaxer Posted October 7, 2014 Share Posted October 7, 2014 Could be a MAF sensor, I would clean the EGR before fitting the blanking plate. Even if you just spray it with EGR cleaner it will defo help. Quote Link to comment Share on other sites More sharing options...
bagi13 Posted October 7, 2014 Author Share Posted October 7, 2014 I brought the wynns egr cleaner and followed the instructions but car sounds no where near as loud and ran better but the problem with power was still there. Quote Link to comment Share on other sites More sharing options...
supercmaxer Posted October 7, 2014 Share Posted October 7, 2014 Clean the MAF sensor just after the air box. You can get blanking plate of eBay for £4 Quote Link to comment Share on other sites More sharing options...
bagi13 Posted October 7, 2014 Author Share Posted October 7, 2014 Ill give that a try. Ive ordered the plate so will fit this weekend :) Thanks for the advice Quote Link to comment Share on other sites More sharing options...
supercmaxer Posted October 7, 2014 Share Posted October 7, 2014 No worries. Let us know how it goes. Quote Link to comment Share on other sites More sharing options...
bagi13 Posted October 7, 2014 Author Share Posted October 7, 2014 Will do :) Quote Link to comment Share on other sites More sharing options...
bagi13 Posted October 10, 2014 Author Share Posted October 10, 2014 It's me again ☺ No luck with the blanking plate! All fitted this morning took her for a test drive and still has power loss. Quote Link to comment Share on other sites More sharing options...
bagi13 Posted October 10, 2014 Author Share Posted October 10, 2014 It's me again ☺ No luck with the blanking plate! All fitted this morning took her for a test drive and still has power loss. Quote Link to comment Share on other sites More sharing options...
supercmaxer Posted October 10, 2014 Share Posted October 10, 2014 Still?? Is it a 1.6or 2.0tdci?? When you cleaned the EGR valve did you spray inside the inlet manifold? I know it's for EGR but it works wonders in other places. Do this by removing the pipe that Feds from the intercooler with the car running and spray inside. It will knock slightly. You only need to spray for 1 second. Make sure all the pipes are secured tight to their homes, check the intercooler pipes. Are you signed up to the cmaxownersclub ? Quote Link to comment Share on other sites More sharing options...
bagi13 Posted October 10, 2014 Author Share Posted October 10, 2014 Hi I did that with the wynns spray last week. Im going to do a small service tomorrow. New oil and filters so I'll check over all of the pipes. I'll keep you updated with the progress ☺ Quote Link to comment Share on other sites More sharing options...
geminitrad Posted October 10, 2014 Share Posted October 10, 2014 Try running the car with the MAF unplugged. If it runs OK then the MAF is foobared. If fault is still on then you know it's not the MAF...................! Quote Link to comment Share on other sites More sharing options...
bagi13 Posted October 10, 2014 Author Share Posted October 10, 2014 Evening 😊 Will that turn the engine management light on ? If so how much to have it turned off at a garage ? Quote Link to comment Share on other sites More sharing options...
geminitrad Posted October 10, 2014 Share Posted October 10, 2014 Hi, Yes it will put the MIL light on. Buy a cheap code reader off eBay and reset the light yourself. Quote Link to comment Share on other sites More sharing options...
supercmaxer Posted October 10, 2014 Share Posted October 10, 2014 Hi, Yes it will put the MIL light on. Buy a cheap code reader off ebay and reset the light yourself. Saying that if it was the MAF it will only go in to limp mode not a total loss failure. I had the same problem it went in to limp clear the fault went ok for a while and then came back. But yes agree cheaper to buy a code reader. Fords will want about £90 Quote Link to comment Share on other sites More sharing options...
bagi13 Posted October 10, 2014 Author Share Posted October 10, 2014 Hi Its not a total loss of power it seems like its get restricted and takes an age to get up to speed. If I turn the ignition off and on again the power returns instantly. Quote Link to comment Share on other sites More sharing options...
supercmaxer Posted October 10, 2014 Share Posted October 10, 2014 Disconnect the MAF plug and see if it drives ok then. Quote Link to comment Share on other sites More sharing options...
bagi13 Posted October 11, 2014 Author Share Posted October 11, 2014 Morning Disconnected the maf sensor and she works fine . Why would the engine management light not come on if this was faulty? Just need to find a new one now. Thanks fir all your help guys its much appreciated Quote Link to comment Share on other sites More sharing options...
geminitrad Posted October 11, 2014 Share Posted October 11, 2014 The MIL light doesn't always come on if a sensor is faulty. I believe the light only comes on if the sensor is not 'seen' by the ECU or it 's input falls outside preset parameters for a preset number of times or a preset amount of time. Your MAF sensor could be falling outside it's parameters for long enough for the car to go into 'limp' mode but not long enough to put the fault light on. Maybe.........! Easy enough to replace though :) Quote Link to comment Share on other sites More sharing options...
supercmaxer Posted October 11, 2014 Share Posted October 11, 2014 I had the same problem Within 30 mins of buying the car, did the same as you turned off then on problem ok but eventually it did go in to limp mode and through up a fault code. Not sure of you did or not but have you sprayed the MAF sensor? Quote Link to comment Share on other sites More sharing options...
supercmaxer Posted October 11, 2014 Share Posted October 11, 2014 Morning Disconnected the maf sensor and she works fine . Why would the engine management light not come on if this was faulty? Just need to find a new one now. Thanks fir all your help guys its much appreciated Glad it's all sorted well you know what the problem is. Quote Link to comment Share on other sites More sharing options...
bagi13 Posted October 11, 2014 Author Share Posted October 11, 2014 Hi Yes cleaned the maf sensor same time as egr. Im picking up a new maf sensor tomorrow also the turbo intercooler pipe as I noticed a hairline crack on mine. Hopefully be running like a dream tomorrow afternoon Quote Link to comment Share on other sites More sharing options...
bagi13 Posted October 12, 2014 Author Share Posted October 12, 2014 Afternoon all The pipe what has the crack in it what part is this called ive taken in off and the crack is quite large 😣 Quote Link to comment Share on other sites More sharing options...
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