All Zetecs have an electronic road speed sensor for the ecu fitted onto the speedo drive on the gearbox. On cars with a mechanical speedo the cable attaches to the speed sensor which in turn attaches to the gearbox. On cars with a electronic speedo there is no outlet for the speedo cable and the electronic speedo uses the same signal as the ecu.
Without it fitted you will have idle speed issues though nothing major and it's certainly not causing your current problem. The old coil connection should have power on the black wire, the green wire just goes back to the rev counter. I hope this loom adaptor has several relays in it and it isn't trying to run the Zetec power straight from the old coil feed. The black wire on the old ignition coil should just be feeding a relay, this is turn should switch battery power to the ecu. Jim From: Mark Miles Sent: Friday, May 20, 2011 2:08 PM To: [email protected] Subject: Re: [Quantum Owners] Re: 2+2 Zetec conversion I don't believe it was from an auto. The road speed sensor is a mechanical cable so not that. I will let Peter know what those voltages should be. What voltages should there be on the old coil wires, there are wires on the loom adapter that connect to those as well, I assume that that is the ignition switched supply to the new ecu. Cheers Mark Miles Manager Bar Square 8 Market Place Wokingham Berkshire RG40 1AL 07522 67 60 57 ------------------------------------------------------------------------------ From: Jim Hearne <[email protected]> To: [email protected] Sent: Fri, 20 May, 2011 13:55:46 Subject: Re: [Quantum Owners] Re: 2+2 Zetec conversion What car is the engine and wiring from ? Are you sure it's not the road speed sensor connector (fitted onto gearbox speedo drive), a 3 pin connector. The coil should have 12v ignition on the centre pin. The outer 2 pins will also be 12v but will drop while the engine is running. The engine wasn't from an automatic was it ? Jim -------------------------------------------------- From: "taximark" <[email protected]> Sent: Friday, May 20, 2011 1:47 PM To: "Quantum Owners Group" <[email protected]> Subject: [Quantum Owners] Re: 2+2 Zetec conversion > First major hiccup, the engine is in, the looms are spliced but there > is still no spark. There is a connector on the new loom for an engine > speed sensor( labelled as such), but appears to be none on the new > engine. The crank position sensor and the cam phase sensor are both > connected. Any suggestions on whether this is a major issue. the coil > pack has three wires going to it, does anyone know what the voltages > should be on these three wires? > > Thanks for your advice > > mark -- You received this message because you are subscribed to the Google Groups "Quantum Owners Group" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/quantumowners?hl=en IMPORTANT NOTE: All information presented herewith is provided on an "As Is" basis, without warranty or the implication thereof. Neither the Quantum Owners Club nor the individuals associated with the Quantum Owners Club or in the preparation of the above information shall have any liability to any person or entity with respect to liability, loss, or damage caused or alleged to be caused directly or indirectly by the instructions contained within this or related message(s). -- You received this message because you are subscribed to the Google Groups "Quantum Owners Group" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/quantumowners?hl=en IMPORTANT NOTE: All information presented herewith is provided on an "As Is" basis, without warranty or the implication thereof. Neither the Quantum Owners Club nor the individuals associated with the Quantum Owners Club or in the preparation of the above information shall have any liability to any person or entity with respect to liability, loss, or damage caused or alleged to be caused directly or indirectly by the instructions contained within this or related message(s). -- You received this message because you are subscribed to the Google Groups "Quantum Owners Group" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/quantumowners?hl=en IMPORTANT NOTE: All information presented herewith is provided on an "As Is" basis, without warranty or the implication thereof. Neither the Quantum Owners Club nor the individuals associated with the Quantum Owners Club or in the preparation of the above information shall have any liability to any person or entity with respect to liability, loss, or damage caused or alleged to be caused directly or indirectly by the instructions contained within this or related message(s).
