Starting issues
Discussion
Boosted LS1 said:
OP, which type of dizzy have you got? If it's an early type with 8 ferrite rods embedded in a plastic disc then I've had the exact same fault.
Hi Bud, mine is the later type I believe , looks exactly this this one http://www.racetechdirect.co.uk/e2501-tvr-car-part...AdzTVR said:
Boosted LS1 said:
OP, which type of dizzy have you got? If it's an early type with 8 ferrite rods embedded in a plastic disc then I've had the exact same fault.
Hi Bud, mine is the later type I believe , looks exactly this this one http://www.racetechdirect.co.uk/e2501-tvr-car-part...Boosted LS1 said:
So when you look inside you see an 8 point star, if so that a variable reluctor type? My one, with the ferrite rods would play up at random and prevent the car from starting. It took ages to discover it was the dizzy at fault. Once replaced with the VR type the engine ran perfectly.
Yes I have the 8 point star so assume it would be the VR type. The annoying thing is I've never had any issues starting the car before and it started fine on the day this all begun! I've managed to find a decent mobile mechanic with TVR knowledge to come and have a look next week as frustratingly I just don't get the time I need to properly test myself. Will update on what the results of his inspection is. I love the technical phrase variable reluctor- sounds very flux capacitor like. These are really very simple bits of hardware- its basically just a permanent magnet and a copper coil wrapped around the rotating disk with the 8 lobes. As the lobes pass the end of the coil there is enough magnetic field passed into the coil to generate a tiny voltage the the ignition amp then boosts to allow the coil to be switched. The variable reluctor bit simply means the voltage from the trigger head will vary with speed, just like spinning a generator at different speeds. In terms of failure, the only thing that can go realistically wrong is the copper coil can go open circuit, as the lead wires to it can fracture as the plate the coil is mounted to is always moving back and forth under control of the dizzy vacuum as the timing is altered.
Immobiliser was the issue! Paul from Kent TVR came round on Wednesday to give the car a once over and after running 12V straight to the coil it started first time. Immobiliser has since been replaced by David at HF-Solutions and she is now running perfectly. It turns out that a previous owner had bypassed the starter circuit which is why it would always crank. Anyway main thing is the car is back on the road and I've learnt a shed load about TVR electrics.
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