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I'd bow to others experience to the contrary, but unless it's a broken wire they either work or not.
Low Rev Throttle Response, at a loss now!
- Thread starter tweedandbriar
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Potentiometer. I'd assumed the pedal relied on a rotary counter, but if @tottot mentioned pots.
Edit. And they come in two main flavours, wire wound and graphite/carbon. Guess which is more reliable and expensive?
tottot
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Part of the throttle pedal body
tweedandbriar
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Ah yes, they are pretty hard to source for less than a couple of hundred squid!
tweedandbriar
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I also tried 'resetting' the throttle by turning ignition on and pressing the pedal 5 x quickly - the engine light flashed, and then I started it up. Seemed a little better. The engine light only flashed once and at the same point after the fifth press.... I hear that can reset the ECU in that respect(?)
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I had to scrap a perfectly good car because Citroen had decided it was cool to design their own potentiometer for the throttle body than to find a way to use a 20p one off the shelf. Replacement of the whole thing was £400.
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tweedandbriar
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Got one of these ... do you think its worth trying this before a whole loom?
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If it were me I'd be exhausting the diagnostics before trying part swaps.
As I said above, if you can watch the output, then do it. Move the pedal through its range. If no spikes then wiggle wires thoroughly to check for spikes caused by a break or poor contact. If nothing happens with either AND the range of outputs meets the spec then there may well be nothing wrong with it.
As I said above, if you can watch the output, then do it. Move the pedal through its range. If no spikes then wiggle wires thoroughly to check for spikes caused by a break or poor contact. If nothing happens with either AND the range of outputs meets the spec then there may well be nothing wrong with it.
tweedandbriar
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Thanks, I'll get the Nanocom on it later and put the files up.....
Anaconda
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You can buy an over lay loom which goes from the pedal to the ecu. This will bypass any problems in the original loom, cheaper than a new pedal, if you can get them
tweedandbriar
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Hi, so with my limited understanding of the Nanocom (only had it a couple of days) here's the readout from a drive a couple of hours ago - can you guys help me interpret any potential problems?
Nanocom Readout
Thanks!!
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Was that logging while you were driving? (Or, what was making the revs go up and down?).
tweedandbriar
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Yes, when driving, only for a mile or so.
tweedandbriar
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It is a lot better. Not sure if that's because the engine was warmed up or because it's so bloody hot today! Feels like there is a little fine adjustment to make somewhere as still prone to be aggressive from a standing start and DEFINITELY doesn't like low revs in 2nd gear...that's when she wants to start 'hopping'
tweedandbriar
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Ha! Like that "spirited drive" ...what are you thinking?
