noahdom Posted November 12, 2013 Share Posted November 12, 2013 hi thx for reading, the problem I am having is on my mk3 mondeo zetec 2.0petrol (duratec) whenever I put my normal driving lights on at night the ngine begins to run really rough and if I don't give it more revs will surely cut out. however I can have main beam, a/c, heating on full plus wipers and this makes no difference to engines normal operation. also speedo and rev counter acting erratically and sometimes goes off briefly. I would be so grateful if someone could shed some light on my problem, as cant really afford to use a garage this near to xmas. thankyou, matt Quote Link to comment Share on other sites More sharing options...
jeebowhite Posted November 12, 2013 Share Posted November 12, 2013 It sounds to me like a potential battery issue. Visit several garages and ask them if they do a free battery health check. Have it tested and see what they say. Is it sidelights? or is it dipped beam headlights that cause the erratic behaviour? It could indicate a wiring fault... Quote Link to comment Share on other sites More sharing options...
noahdom Posted November 12, 2013 Author Share Posted November 12, 2013 dipped beam headlights, the side lights make no affect to the engine at all. I can have everything electrical on simultaneously apart from dipped lights and all is fine however if i just put the dipped lights on it causes the problem. could this still b a battery fault as i have a newish batt in garage i cud try. also engine management light comes on now and again since the problem started Quote Link to comment Share on other sites More sharing options...
stooge75 Posted November 12, 2013 Share Posted November 12, 2013 you really need to get those fault code/s read as it'll be a good pointer to what's causing it. do you know anyone with a code reader? or elm327 cable etc? Quote Link to comment Share on other sites More sharing options...
jeebowhite Posted November 12, 2013 Share Posted November 12, 2013 It sounds like a wiring issue to me. Check the fuse boxes and ensure that they are both dry and there are no overheating wires. Error codes are a good place to start, but right now, if you have a spare battery I would say there is no harm in fitting it to see if it makes a difference! Quote Link to comment Share on other sites More sharing options...
noahdom Posted November 12, 2013 Author Share Posted November 12, 2013 Thx very much for the advice will try the batt tomoz an if that fails will look for a diagnostic report, will get bac to u. Again thx Quote Link to comment Share on other sites More sharing options...
jeebowhite Posted November 12, 2013 Share Posted November 12, 2013 No worries :) Quote Link to comment Share on other sites More sharing options...
noahdom Posted November 17, 2013 Author Share Posted November 17, 2013 Tried batt no luck there also cam sensor Quote Link to comment Share on other sites More sharing options...
Dan62 Posted November 17, 2013 Share Posted November 17, 2013 . Quote Link to comment Share on other sites More sharing options...
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