W202 Engine Management Light reaction time.

barny1 · 25-03-2009, 10:40 AM

Hi, I have a tuning box fitted to my car but I want to make it switchable.

I am going to do this with some relays to make a bypass circuit.

My question is if I switch from the box to normal running whilst the engine is running will the EML come on and stay on? or if the relays are quick enough, not have enough time to react??

Lights never been on before so I dont know if a fault came up whether it stays on or not.

cheers

Barny

Baron_Samedi · 25-03-2009, 10:45 AM

Have you considered opto-relays instead of electro-mechanical ones?

GCLTuning · 25-03-2009, 10:49 AM

No chance this is a big no no ... A tunit box is enough to ruin a vehicle

A slight fluctuation of power a you could have a non starter ...

You need a stable supply of power pref 13.6 Volts stable .You could have potentaily have more problems than its worth ...

Regards *** Tuning

25-03-2009, 10:40 AM	#1
barny1 New Member Join Date: Dec 2008 Location: Midlands Car: Mercedes C220 cdi Posts: 24	W202 Engine Management Light reaction time. Hi, I have a tuning box fitted to my car but I want to make it switchable. I am going to do this with some relays to make a bypass circuit. My question is if I switch from the box to normal running whilst the engine is running will the EML come on and stay on? or if the relays are quick enough, not have enough time to react?? Lights never been on before so I dont know if a fault came up whether it stays on or not. cheers Barny

25-03-2009, 10:45 AM	#2
Baron_Samedi Hardcore MB Enthusiast Join Date: Feb 2009 Location: Wiltshire UK Car: CLK200K Posts: 1,889	Have you considered opto-relays instead of electro-mechanical ones?

25-03-2009, 10:49 AM	#3
GCLTuning Banned Join Date: Apr 2008 Posts: 123	No chance this is a big no no ... A tunit box is enough to ruin a vehicle A slight fluctuation of power a you could have a non starter ... You need a stable supply of power pref 13.6 Volts stable .You could have potentaily have more problems than its worth ... Regards *** Tuning

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