starting problem after cleaning stepper motor
Discussion
@Andy; thanks. Most is familiar (non ac thought).
I had some time in the weekend for searching, turned out that the hotwire relays are metal with a red mark on it. Het Pektron ones are supposed to be used with a Flapper I understood.
Both relays turned out to work correct. I stared working on the loom upwards and found a dodgy connection that is added at some point in time. Fiddling with that and it started right away. Replaced the connection and stared right away yesterday too. It looks like this was the problem, fingers crossed. When I have a spare weekend it would be wise to clean all the connections and check the loom, as these kind of problems don't come overnight. When I cleaned the stepper motor, I also cleaned the engine bay with a bit of fiddling with the loom and wires, that was probably just too much for this connection.
It’s part of the joy of old motoring, but became pretty frustrating as we finally had a couple of days without showering rain… On the upside, got to know more about the old girl and its technique too.
As for the stepper motor, I did not calibrated it with an ECU mate or something. I figured that drought the ECU might not recognize its position, starting in base position with the cone in should work and as Tony indicated, there were moments when it ran. When putting the key in stage II and turn it off again, it should go back to base position, maybe the ECU does recognize this. I’ve turned to stage II and back 5-6 times till is virtually stops ticking over. What also might help with the cold start is the mapping of Mark Adams in this car, it’s quite a rich mixture when cold and I suspect also with low revs.
First drive on Sunday (20mls or so) it idled high, especially when suddenly pressing the clutch, and needed some additional time to settle down at normal idle speed with a traffic light, but after 10mls or so all was good and more stable than before cleaning the stepper motor. Took it for a short drive yesterday and started and drove fine. Hope it stays that way. Thanks for the help gents, will give a update in a couple of weeks.
I had some time in the weekend for searching, turned out that the hotwire relays are metal with a red mark on it. Het Pektron ones are supposed to be used with a Flapper I understood.
Both relays turned out to work correct. I stared working on the loom upwards and found a dodgy connection that is added at some point in time. Fiddling with that and it started right away. Replaced the connection and stared right away yesterday too. It looks like this was the problem, fingers crossed. When I have a spare weekend it would be wise to clean all the connections and check the loom, as these kind of problems don't come overnight. When I cleaned the stepper motor, I also cleaned the engine bay with a bit of fiddling with the loom and wires, that was probably just too much for this connection.
It’s part of the joy of old motoring, but became pretty frustrating as we finally had a couple of days without showering rain… On the upside, got to know more about the old girl and its technique too.
As for the stepper motor, I did not calibrated it with an ECU mate or something. I figured that drought the ECU might not recognize its position, starting in base position with the cone in should work and as Tony indicated, there were moments when it ran. When putting the key in stage II and turn it off again, it should go back to base position, maybe the ECU does recognize this. I’ve turned to stage II and back 5-6 times till is virtually stops ticking over. What also might help with the cold start is the mapping of Mark Adams in this car, it’s quite a rich mixture when cold and I suspect also with low revs.
First drive on Sunday (20mls or so) it idled high, especially when suddenly pressing the clutch, and needed some additional time to settle down at normal idle speed with a traffic light, but after 10mls or so all was good and more stable than before cleaning the stepper motor. Took it for a short drive yesterday and started and drove fine. Hope it stays that way. Thanks for the help gents, will give a update in a couple of weeks.
I am glad you managed to sort it. From the simptoms you described I guessed it had to be something other than the stepper motor as I had a Wedge that ran without one. A broken wire or a dad connection amongst the ignition system seems a likely explanation. Well done and enjoy the drive.
Tony. TCB.
Tony. TCB.
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