Today my Rover's engine shut down whilst I was driving, luckily on a quiet rural road, only a few miles from home. After eliminating fuel supply as the problem, I then turned to the electical side. With the engine cranking over and the coil lead disconnected at the distributor, there was no spark. There was also no voltage at all between the +ve and -ve coil terminals with the ignition at position 2. There should be 6.6V. My Rover has Lumention (the optical version) fitted, which has been there since a friend and I installed it in 1990 or so.
The ballast resistor has been ruled out as the problem as when cranking it is bypassed, so the engine would fire, but it wouldn't catch at all.
A tow truck was organised and my Rover was winched onto the back of a truck, oh the shame of it all. How I wish I had my camera with me, forgot that my phone has a camera, too late now!
At home on the drive, wouldn't you know it, the engine started. I carried out the tests on the Lumenition system and all were passed. The power module and the optical eye both delivering the voltages that they are supposed to. The positive lead to the coil with the ignition on delivered approx 12.5V, but only 4.5V between +ve and -ve. With the engine running, only 3.25V appears between the +ve and -ve coil terminals, whereas it should read 10V.
I changed the coil and that made no difference, still 3.25V across the coil.
So, where is the problem? Does anyone have a suggestion or has anyone experienced same before?
Personally I think the Lumenition power module is the key, and I do have a spare, but thought I would ask before I go to all the trouble to change it.
Ron.
The ballast resistor has been ruled out as the problem as when cranking it is bypassed, so the engine would fire, but it wouldn't catch at all.
A tow truck was organised and my Rover was winched onto the back of a truck, oh the shame of it all. How I wish I had my camera with me, forgot that my phone has a camera, too late now!
At home on the drive, wouldn't you know it, the engine started. I carried out the tests on the Lumenition system and all were passed. The power module and the optical eye both delivering the voltages that they are supposed to. The positive lead to the coil with the ignition on delivered approx 12.5V, but only 4.5V between +ve and -ve. With the engine running, only 3.25V appears between the +ve and -ve coil terminals, whereas it should read 10V.
I changed the coil and that made no difference, still 3.25V across the coil.
So, where is the problem? Does anyone have a suggestion or has anyone experienced same before?
Personally I think the Lumenition power module is the key, and I do have a spare, but thought I would ask before I go to all the trouble to change it.
Ron.
