Jump to content
Do Not Sell My Personal Information

When Put Head Lights On Engine Runs Really Rough, Help!!!


noahdom
 Share

Recommended Posts

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

Link to comment
Share on other sites


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...

Link to comment
Share on other sites

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

Link to comment
Share on other sites

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?

Link to comment
Share on other sites

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!

Link to comment
Share on other sites


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

Link to comment
Share on other sites

Latest Deals

Ford UK Shop for genuine Ford parts & accessories

Disclaimer: As the club is an eBay Partner, The club may be compensated if you make a purchase via the club

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share






×
×
  • Create New...

Forums


News


Membership