Cutting out...
Discussion
I've taken the Chim for a little spin today. She's been running fine, but cut out a few times when I came to a stand still. It seems as if she idles perfectly, then all of a sudden has a bit of splutter, idles perfectly again and then splutter before cutting out. It starts again immediately afterwards. Any ideas??? Would this be a stepper motor issue or something to do with the coil?
I've had a look around the hoses attached to the plenum. All connected, with no obvious cracks. I did make a point of checking them before I put them back on. I'll take the stepper motor out tomorrow, re-aseal and then replace, although I did use PTFE tape when I put it back in. 
It runs fine under load, idles okay, but then simply drops off. Would this be effected by timing? I've had the dizzy out a couple of times, but have been carful to mark its position and photograph the direction of the rotor arm. Normally idles fine. What about adjusting the throttle pot?
As for checking everything I touched, well that's pretty much the whole engine, from dizzy to PAS pump.
It runs fine under load, idles okay, but then simply drops off. Would this be effected by timing? I've had the dizzy out a couple of times, but have been carful to mark its position and photograph the direction of the rotor arm. Normally idles fine. What about adjusting the throttle pot?As for checking everything I touched, well that's pretty much the whole engine, from dizzy to PAS pump.
Edited by chris1972 on Monday 3rd June 21:11
peaktorque said:
Mine used to do this.
I just set up the base idle rate and now it never cuts out - however it does very occasionally idle a bit high (1000-1200 rpm as opposed to the normal 800rpm) This is preferable to the cutting out though and rarely happens
I'm sure it's stepper motor related.
+1I just set up the base idle rate and now it never cuts out - however it does very occasionally idle a bit high (1000-1200 rpm as opposed to the normal 800rpm) This is preferable to the cutting out though and rarely happens
I'm sure it's stepper motor related.
But not the stepper
chris1972 said:
jojackson4 said:
+1
But not the stepper
Why? Tell me more But not the stepper
Speed transducer then stepper then new stepper then new leads then new coolant censer
Then steps up the chimp of darkness / gas and gave me a link to setup the under bonnet gubings
It turns out to be the TPS it was miles out ended up slotting the fixings to get the right voltage ( the ecu thought the throttle was open and not telling the stepper to do its thing) it has sorted it 99% I would do you the link but I am s
t a IT and has just taken me 15 mins to do this The cihimp will be able to give it you
Good look Peter
Okay, just a quick update.
Received a phone call from Dave (Andav469) this afternoon who asked me if I sealed the plenum with Hylomar when I put it back on... errr, nope! So i've taken the plenum off and put a generous continuous smear all the way around the base. As it happens, I'm very pleased that I took the plenum off, as it appears that a couple of my trumpets had come loose too, so I took the opportunity to reseat these with plenty of superglue around the edges. They were rock solid by the time I put the plenum back on. I'll give them another hour to cure. Almost divine intervention Dave! I think I'll check them out again in a couple of weeks.
Hopefully this will cure the cutting out if so, looks like you and Phazed were on the right track. Let you know later when I get out for a run!
BTW, how do you get a fine bead of Hylomar? I looks like a pearl necklace by the time I've finished! I've resorted to smearing now!
Received a phone call from Dave (Andav469) this afternoon who asked me if I sealed the plenum with Hylomar when I put it back on... errr, nope! So i've taken the plenum off and put a generous continuous smear all the way around the base. As it happens, I'm very pleased that I took the plenum off, as it appears that a couple of my trumpets had come loose too, so I took the opportunity to reseat these with plenty of superglue around the edges. They were rock solid by the time I put the plenum back on. I'll give them another hour to cure. Almost divine intervention Dave! I think I'll check them out again in a couple of weeks.
Hopefully this will cure the cutting out if so, looks like you and Phazed were on the right track. Let you know later when I get out for a run!
BTW, how do you get a fine bead of Hylomar? I looks like a pearl necklace by the time I've finished! I've resorted to smearing now!
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