Accelerator Switch
#1
Posted 05 February 2007 - 10:25 PM
#2
Posted 06 February 2007 - 12:10 AM
#3
Posted 06 February 2007 - 01:23 AM
#4
Posted 06 February 2007 - 07:23 PM
Do you have a one or two plug ECU and wiring loom??
Erm... 2 and a vacuum pipe, I think
#5
Posted 07 February 2007 - 12:42 AM
#6
Posted 07 February 2007 - 08:35 AM
#7
Posted 07 February 2007 - 08:04 PM
Normaly when something is described as a 'switch' its function is on or off (digital). When something is described as a 'sensor' its function is variable (analogue)
#8
Posted 07 February 2007 - 11:11 PM
#9
Posted 07 February 2007 - 11:18 PM
#10
Posted 08 February 2007 - 12:47 AM
#11
Posted 26 May 2007 - 09:02 PM
You might have noticed that with the engine running, if you press the accelerator lever at the throttle body, the revs go up, then down, then up, etc...
Well, only this week I got up and before driving to work, I thought I'd top up the oil. So I started on my way, and suddenly, driving on the motorway, the car just went full throttle!!!
So I let go of the pedal and the revs went up-down-up-down. I made it to a safe spot off the motorway, opened the hood, and there was the oil filler cap stuck behind the accelerator lever on the throttle body. Last time I'm doing anything to my Mini at 6am
So I guess it's a kind of safety feature, so the engine doesn't keep over-revving when something happens to that lever.
#12
Posted 26 May 2007 - 09:08 PM
If you do it quickly it will stutter quite badly. This is only a feature of later spi's possibly from 93on or so (mine has the switch and mines a early 93car). I wouldnt recommend indexing the throttle from under the bonnet, just use the pedal.
#13
Posted 26 May 2007 - 10:13 PM
#14
Posted 26 May 2007 - 10:29 PM
The switch lets the ECU know the position of the throttle pedal so it has some idea of the performance your looking for. If you index the throttle from under the bonnet the revs go up and down, but this is because you are moving the throttle without input from the switch and the engine doesn't know where it is as the revs go wild it reverts to overrun or so im told and runs leans.
If you do it quickly it will stutter quite badly. This is only a feature of later spi's possibly from 93on or so (mine has the switch and mines a early 93car). I wouldnt recommend indexing the throttle from under the bonnet, just use the pedal.
I think you are confused
The switch on the pedal is an on off switch, it only tells the ecu that the engine is in an idle condition. It is omitted from late 93 onwards cars runnng the MEMS 1.9 ECUs
Indexing the throttle cannot be done on MEMs 1.6 two plug ECUs by pressing the pedal as this causes the switch to open. You have to hold the pedal up with a bungee cord and activate the throttle linkage under the bonnet. Also note that you index the throttle with the engine switched off.
Acceleration enrichment uses the throttle position sensor on the throttle body. Load is determined by the MAP sensor and RPM.
Edited by Mini Sprocket, 26 May 2007 - 10:40 PM.
#15
Posted 26 May 2007 - 10:30 PM
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