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Engine management light?


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right ive just wired up my speed limit defencer, went for a quick test to make sure it works and it does, car doesnt run any differently in the slightest, everything smooth as always, when i booted it down the motorway my engine management light came on, i pulled over in the lay by, checked my oil and was real low (changing it today) when i turned my ignition back on, the light was gone, then when i booted it again it came on? i have FCD fitted but its never done this before


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FCD's are an accident waiting to happen.

Sorry this doesn't help you but its true.

what would happen then? its been in there for a few years, runs a bit rich, nothings changed, but why would the light come on?

Have u done a diagnostic check? Any codes come up?

not yet it only happened today, im going to try getting it plugged in during the week at some point!

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its never done it before though, and i can redline every gear (not that i do :D ) full boost etc and it doesnt come on, i could just be cruising off the boost and itll randomly come on, then disappear when i turn the car off, then on again?


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  • 2 weeks later...

if you test it she will proberly show fault code 42 like mine did as my cable was not connected (that's my speedo cable by the way) check my link

here http://www.ukstarletowners.com/topic/66490-ecu-diagnostic-codes/

basically ecu code 42 Vehicle Speed Sensor (VSS)
No speed sensor signal to ECU when loaded driving condition with engine speeds 2000 to 5000 rpm. in 5th gear driving
For 8 seconds or more.

check it out pal see if the link helps

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I'll check that at some point after work today dude, sounds like the most likely problem! I just thought it was funny how even when i dont boost it came on, but if i go boosting around it didn't come on haha :D

if you test it she will proberly show fault code 42 like mine did as my cable was not connected (that's my speedo cable by the way) check my link

here http://www.ukstarletowners.com/topic/66490-ecu-diagnostic-codes/

basically ecu code 42 Vehicle Speed Sensor (VSS)
No speed sensor signal to ECU when loaded driving condition with engine speeds 2000 to 5000 rpm. in 5th gear driving
For 8 seconds or more.

check it out pal see if the link helps

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keep us updated mate if it aint fault 42 you will be able to find out by doing the test on that above link

cheers buddy, I'll have a crack at it when i get in from work (if it isnt raining lol)

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  • 3 years later...

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