Dumbass Rover V8 ignition question.
Discussion
I know aq normal coil has a wire from the Dissy, a wire to a switched live, and obviously the HT lead. Simple.
On my rover v8, there is a weird looking 6 terminal thing, and there is also 2 wires coming from the distributor, both of which attach to the odd 6 terminal thing.
Can anyone explain this system please?
Cheers.
On my rover v8, there is a weird looking 6 terminal thing, and there is also 2 wires coming from the distributor, both of which attach to the odd 6 terminal thing.
Can anyone explain this system please?
Cheers.
You will have an ignition amplifier too. Depending on the distributor type, this could be mounted on the side of the distributor, or on the side of the coil, or elsewhere. From your description I would guess that the thing you're looking at is the ignition amplifier. This takes the place of the old fashioned mechanical points, and converts a very small signal from the pickup inside the distributor, to a high current through the coil.
Engine over-run cutoff was used on the RR 3.5 flapper EFI systems ……………
It was to improve engine braking and also the fuel consumption.
It is controlled by a vacuum switch mounted on the inlet manifold beside the fuel regulator. The vacuum is tee’d into the fuel regulator from the rear of the plenum.
The switch is normally made, and under large vacuum conditions (i.e. overrun with the throttle closed) operates and breaks the circuit to the over run cutoff relay that is usually mounted close to the air flow meter. The relay connects the LT side of the coil (-) to the ECU pin1 via a resistor. This tells the ecu that the engine is running (and also the engine speed) ………….. if the ecu detects no pulses then it shuts down the fuel pump.
These switches used to fail with monotonous regularity and a common fix was to bypass the switch by connecting the switch wires together………….
Back to the question ………. It sounds like you have the ign amp that is mounted under the coil…………… these are generally quite reliable but you can replace this with a Vauxhall amp …….. £20 Vs £150…..
The unreliable amp was the early 2 pin device mounted on the side of the 35DLM8 dizzy…..
Alternatively spend some time and money ………… Ford EDIS 8 and control it with MS
Ian
It was to improve engine braking and also the fuel consumption.
It is controlled by a vacuum switch mounted on the inlet manifold beside the fuel regulator. The vacuum is tee’d into the fuel regulator from the rear of the plenum.
The switch is normally made, and under large vacuum conditions (i.e. overrun with the throttle closed) operates and breaks the circuit to the over run cutoff relay that is usually mounted close to the air flow meter. The relay connects the LT side of the coil (-) to the ECU pin1 via a resistor. This tells the ecu that the engine is running (and also the engine speed) ………….. if the ecu detects no pulses then it shuts down the fuel pump.
These switches used to fail with monotonous regularity and a common fix was to bypass the switch by connecting the switch wires together………….
Back to the question ………. It sounds like you have the ign amp that is mounted under the coil…………… these are generally quite reliable but you can replace this with a Vauxhall amp …….. £20 Vs £150…..
The unreliable amp was the early 2 pin device mounted on the side of the 35DLM8 dizzy…..
Alternatively spend some time and money ………… Ford EDIS 8 and control it with MS
Ian
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