coolbloke Posted August 16, 2010 Share Posted August 16, 2010 Hello For some unknown reason my car has started to misfire while driving. It judders and lurches and recently when i have been coming to a standstill at traffic lights or junctions it switchs off. I have replaced the two leads but not the black boxes and when investigating the spark plugs there white which as i understand is a weak fuel mixture. I took the ecu memory fuse out and that seemed to solve the problem for about a week and now it has come back again. My ecu is chipped as well would that have anything to do with it. Getting worried as i have spent alot on the engine as it has had the full works done to it new pistons and valves as well so it can't be any of them breaking can it??? Please help Oh yea there is a strong smell of fuel and fumes from the exhaust as well. Have had all gaskets on exhaust looked at and there fine Link to comment Share on other sites More sharing options...
escortedal Posted August 16, 2010 Share Posted August 16, 2010 wrong section for a start so will be moved, secondly did it run well before the chip? or after it was fitted? if it ran ok pre chip, then remove the chip and see what happens, best speak to stu regards this as he be the man for ecu and chips on here i reckon. Link to comment Share on other sites More sharing options...
coolbloke Posted August 16, 2010 Author Share Posted August 16, 2010 wrong section for a start so will be moved, secondly did it run well before the chip? or after it was fitted? if it ran ok pre chip, then remove the chip and see what happens, best speak to stu regards this as he be the man for ecu and chips on here i reckon. ok sorry not been on here in a while and things have changed sllightly. It ran ok till 2 weeks ago when it started playing up with the chip in Link to comment Share on other sites More sharing options...
JC Posted August 16, 2010 Share Posted August 16, 2010 If you've spent alot of money on it, take it to a decent garage to look at Link to comment Share on other sites More sharing options...
bluliz Posted August 17, 2010 Share Posted August 17, 2010 (edited) wrong section for a start so will be moved, secondly did it run well before the chip? or after it was fitted? if it ran ok pre chip, then remove the chip and see what happens, best speak to stu regards this as he be the man for ecu and chips on here i reckon. ok sorry not been on here in a while and things have changed sllightly. It ran ok till 2 weeks ago when it started playing up with the chip in Remove the chip in the correct way and see if the fault goes away. What type of chip is it? Edited August 17, 2010 by bluliz Link to comment Share on other sites More sharing options...
Stu Posted August 17, 2010 Share Posted August 17, 2010 EEC-IV chips are notorious for not being seated properly which can lead to running issues (although it may or not be related). It's a quick check, the ECU is in the passenger footwell, simply unplug the chip module! Unless you've had some drastic engine changes and a custom mapped chip made it should be fine. Link to comment Share on other sites More sharing options...
stoo2000 Posted August 17, 2010 Share Posted August 17, 2010 We've moved this topic into the correct section. Link to comment Share on other sites More sharing options...
coolbloke Posted August 17, 2010 Author Share Posted August 17, 2010 ok thanks... Removed the chip and its not made any difference could it be the ignigtion coils would that make it drive roughly. Link to comment Share on other sites More sharing options...
Stu Posted August 17, 2010 Share Posted August 17, 2010 Could be, along with pretty much anything else on the engine! Link to comment Share on other sites More sharing options...
coolbloke Posted August 17, 2010 Author Share Posted August 17, 2010 Could be, along with pretty much anything else on the engine! ah ok its just a bought it of a mate and when he had it he rebuilt the engine and all the values were done at ford so it has had a good job done on it. Just recently did a load of small journeys and its just started playing up. Starting to annoy me now. ok no worries cheers for the help people will go back to the drawing board Link to comment Share on other sites More sharing options...
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