The fly lead works but I’d lost power again to the fuel pump so I spent half the day testing again, finally decided to remove the immobiliser, when I reconnected the fuel pump supply and the starter motor supply I powered back up, still no supply to the fuel pump. I had a flash of inspiration and thought what knocks off the fuel pump when the fuel line is up to pressure, can’t see any mention of a pressure switch that could do that. I’ll probably have to call an auto electrician next week if I don’t have an eureka moment before. Bill
Sent from my iPhone On 11 Apr 2019, at 21:43, bill <bill_green_2...@hotmail.co.uk<mailto:bill_green_2...@hotmail.co.uk>> wrote: 🤞I’ll do a trial run with the fly lead though Sent from my iPhone On 11 Apr 2019, at 17:09, Susan and Martin Scott <susanandmar...@corringham99.free-online.co.uk<mailto:susanandmar...@corringham99.free-online.co.uk>> wrote: Good - it looks more promising a situation. Roll on Stoneleigh! ----- Original Message ----- From: bill<mailto:bill_green_2...@hotmail.co.uk> To: quantumowners@googlegroups.com<mailto:quantumowners@googlegroups.com> Sent: Thursday, April 11, 2019 4:47 PM Subject: Re: [Quantum Owners] Inertia switch? The fuse wasn’t for the lighter socket Martin, it was the fuse that is in the plug, new 20amp fuse fitted and fly lead ready 👍 Sent from my iPhone On 11 Apr 2019, at 16:33, Susan and Martin Scott <susanandmar...@corringham99.free-online.co.uk<mailto:susanandmar...@corringham99.free-online.co.uk>> wrote: Hmm - If you smoked you'd have spotted that earlier! :-) Martin ----- Original Message ----- From: bill<mailto:bill_green_2...@hotmail.co.uk> To: quantumowners@googlegroups.com<mailto:quantumowners@googlegroups.com> Sent: Thursday, April 11, 2019 4:09 PM Subject: Re: [Quantum Owners] Inertia switch? I took the Q out for a bit of a shake down run, I want to give it some decent trials before stoneleigh, all was well until I called into a local motorbike shop, on switching on again I was met by a silent fuel pump, no problem I thought, I’ll stick on my fly lead, still no joy. A quick call to the AA and a very nice man arrived to take a look, his test lead powered up the pump and the car restarted. He had a bit of a look near the fuse board checking the wiring and found a loose earth connection, the threads were poor on the fitting, he swapped it to another screw, we started the car and drove home with him following. More shake down runs required. The reason my fly lead didn’t work was due to a 1amp fuse being in the cigar lighter plug, fuel pump fuse is 20amp, I’ve upped the fuse rating.Every trip is an adventure . Bill Sent from my iPhone On 9 Apr 2019, at 16:29, bill <bill_green_2...@hotmail.co.uk<mailto:bill_green_2...@hotmail.co.uk>> wrote: Thanks for the timely warning Jim, I’ll stick to the red relay, the jumper lead will be getting fine tuned maybe fit it with a cigar lighter plug for a quick change option Bill Sent from my iPhone On 9 Apr 2019, at 16:01, Jim Hearne <j...@quantums.info<mailto:j...@quantums.info>> wrote: I wouldn’t use the yellow one in that application. The fuel pump relay has one coil connection connected to the ignition switched 12 volts, the other side of coil is earthed by the ECU. Without the diode there could be a current flow back through the relay coil and into the ecu when the ignition is on but the engine isn’t running. This could cause damage to the ECU. Also, the lower resistance of the coil could damage the driver in the ecu. Jim From: bill Sent: Tuesday, April 9, 2019 3:32 PM To: quantumowners@googlegroups.com Subject: Re: [Quantum Owners] Inertia switch? When I tested the relays I found the red one that was for the fuel pump had quite a high resistance on the primary circuit and also polarity sensitive, must have the diode installed, one of my spare yellow relays has much lower resistance on primary and isn’t polarity sensitive, the the numbers on the connections match and when I’ve trialled the yellow relay I still have power to the fuel pump, both are rated at the same amps. Bill Sent from my iPhone On 9 Apr 2019, at 15:25, Jim Hearne <j...@quantums.info> wrote: Some of the relays have a diode in series with the coil so they only work with power in one direction. Some of them have a resistor across the coil. There are also 5 pin relays that have 1 change over contact and some that have 2 normally open contacts. The best way is to look closely at the little diagram Ford tend to put on the side of the relay and make sure it matches. Watch out if you use aftermarket relays as the are 2 different pinout standards for car type relays, same arrangement of pins but the internal connections are different. Jim From: bill Sent: Tuesday, April 9, 2019 3:13 PM To: quantumowners@googlegroups.com Subject: Re: [Quantum Owners] Inertia switch? Just as a matter of interest, what’s the difference if any between the ford red and yellow relays, I know the numbers on the pins are in the same position but other than that I’m in the dark Bill Sent from my iPhone On 9 Apr 2019, at 14:55, bill <bill_green_2...@hotmail.co.uk> wrote: Sent from my iPhone Begin forwarded message: From: bill <bill_green_2...@hotmail.co.uk> Date: 9 April 2019 at 14:45:31 BST To: Steve Kodź <st...@h4-turbo.co.uk> Subject: Re: [Quantum Owners] Inertia switch? I had over three hours this morning testing and checking, I didn’t find an inertia switch anywhere, I had the fuses out, the relays out, tested the circuit through the immobiliser and everything checked out ok. The power is back to the fuel pump, for now, but there’s nothing I can say that I found, I really hate that when it happens. Thank you everyone who replied with information, much appreciated, hopefully see you all at stoneleigh if I don’t have a similar event Bill Sent from my iPhone On 8 Apr 2019, at 21:45, Steve Kodź <st...@h4-turbo.co.uk> wrote: The MK3 Fiesta had the inertia switch attached to the body in the passenger side footwell. I fitted mine in the same place when I built my H4, so hopefully yours is in a similar location. Regards, Steve On 8 April 2019 21:43:04 bill <bill_green_2...@hotmail.co.uk> wrote: I forgot to put which model, it’s a H4 it has an immobiliser but there is output from the relay it’s just not reaching the pump. If there isn’t a inertia switch I was thinking to test the pump supply wire half way along and see if there’s power then to work one way or the other depending on the result and try to find the break if there is one. I’ll take a look behind the kick panel in the morning. Bill Sent from my iPhone On 8 Apr 2019, at 20:57, Susan and Martin Scott <susanandmar...@corringham99.free-online.co.uk> wrote: Hi Bill, Forgive my memory... is this on an H4? if so, and the donor had a fuel cut-off, it's likely to be around the same position. At Ford, one of my colleagues had a puncture in a 'pool car' Mondeo, and having switched to the spare he then found he couldn't start the car. Naturally he thought he was jinxed, but it turned out he'd dropped the punctured wheel into the boot, which had tripped the fuel cut-off switch located nearby! Martin ----- Original Message ----- From: "bill" <bill_green_2...@hotmail.co.uk> To: <quantumowners@googlegroups.com> Sent: Monday, April 08, 2019 7:22 PM Subject: [Quantum Owners] Inertia switch? Good evening everyone, wouldn’t you just know it, six months of inactivity then when I want to run the Q it starts to act up. I set off from home and within 400m it cut out, the fuel pump not running, the fuses etc were ok, so I changed the fuel pump relay for a known good spare, still nothing, when I could finally find the access cover to the tank I found there was no power at the plug, I checked and tested what I could then ran a fly lead from power , cut into the supply wire at the plug on the tank, connected the fly lead and the pump ran. Does anyone know where, if fitted the inertia cut off would be fitted before I splice in a new supply, stoneleigh isn’t far away. Many thanks. 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