Sorry, was away on holiday so it's now back to reality and trying to get the car up and running again.
Anyone able to respond to the above post at all? Will try cleaning the sensor and doing a reset (if anyone could tell me how then that would be great). Can you buy a new TPS or do you have to buy a whole throttle body?
MIL Light On and Rev Problems
Re: MIL Light On and Rev Problems
There is no scope for cleaning this sensor.
You can test the sensor itself with a multimeter.
Remove the plug from the sensor and measure resistance from pin 1 to pin 3. Should be in the 5K ohm range I think (10K would be OK too, <1K or >10K would not be).
Now measure from pin 1 to centre pin. Should give you either close to the figure you first measured or 0 (depends on which one you decide is pin 1 - doesn't matter which). Now with the meter still attached get someone to slowly open the throttle. You should see a smooth change in resistance from min to max (or max to min). Now repeat with pin 2 to pin 3. You should get the same result, but backwards. If that all checks out the TPS is fine and your problem is likely wiring.
If it has a metal plenum then faulty TPS is a lot more likely than plastic plenum, it seems.
Cheers,
Robin
You can test the sensor itself with a multimeter.
Remove the plug from the sensor and measure resistance from pin 1 to pin 3. Should be in the 5K ohm range I think (10K would be OK too, <1K or >10K would not be).
Now measure from pin 1 to centre pin. Should give you either close to the figure you first measured or 0 (depends on which one you decide is pin 1 - doesn't matter which). Now with the meter still attached get someone to slowly open the throttle. You should see a smooth change in resistance from min to max (or max to min). Now repeat with pin 2 to pin 3. You should get the same result, but backwards. If that all checks out the TPS is fine and your problem is likely wiring.
If it has a metal plenum then faulty TPS is a lot more likely than plastic plenum, it seems.
Cheers,
Robin
I is in your loomz nibblin ur wirez
#bemoretut
#bemoretut
Re: MIL Light On and Rev Problems
Try the following reset, I have to do this every 2 weeks when I come home as I disconnect the battery, if I dont do the reset the idle and response from the throttle are all over the place.
As mentioned before I have a spare throttle body / tps that you are welcome to borrow.
In all cases a manual recalibration of the TPS may resolve the issues at least on a temporary basis. To recalibrate the TPS: -
1.With the engine off, insert the key and turn the ignition to position 2 (On) without starting the engine.
2.For MEMS-equipped cars (S1)Or S2 Rover engined cars, quickly but steadily press and release the accelerator pedal 5 times for TPS calibration, using all of the throttle travel as practicable. It is better to do this from the engine bay, using the cam on the throttle body, as this ensures you get 0-100% operation of the throttle, and correct calibration, If your throttle cable or mech does not give 100% throttle, calibration will be out. And potentially you will be wasting your time. This will trigger the ECU into the closed-throttle reference learn algorithm, which has it looking for the lowest measured static throttle position (the closed position). The throttle position calibration is a fixed definition from this point.
3.Turn the ignition off, remove the key and wait for the ECU to power down (about 30-40s).
4.Start car as normal.
As mentioned before I have a spare throttle body / tps that you are welcome to borrow.
In all cases a manual recalibration of the TPS may resolve the issues at least on a temporary basis. To recalibrate the TPS: -
1.With the engine off, insert the key and turn the ignition to position 2 (On) without starting the engine.
2.For MEMS-equipped cars (S1)Or S2 Rover engined cars, quickly but steadily press and release the accelerator pedal 5 times for TPS calibration, using all of the throttle travel as practicable. It is better to do this from the engine bay, using the cam on the throttle body, as this ensures you get 0-100% operation of the throttle, and correct calibration, If your throttle cable or mech does not give 100% throttle, calibration will be out. And potentially you will be wasting your time. This will trigger the ECU into the closed-throttle reference learn algorithm, which has it looking for the lowest measured static throttle position (the closed position). The throttle position calibration is a fixed definition from this point.
3.Turn the ignition off, remove the key and wait for the ECU to power down (about 30-40s).
4.Start car as normal.
Re: MIL Light On and Rev Problems
Just to clarify slightly on the above - no S2 is MEMS equipped (they have a Lotus ECU), so I don't think that re-set works with them (unless it's been established differently recently). Does with S1s though.
2010 Honda VFR1200F
1990 Honda VFR400 NC30
2000 Honda VTR1000 SP1
2000 Kawasaki ZX-7R
1990 Honda VFR400 NC30
2000 Honda VTR1000 SP1
2000 Kawasaki ZX-7R
Re: MIL Light On and Rev Problems
Not too sure Shug, this is copied from tech wiki and certainly works for mine (S2 rover engine)
Re: MIL Light On and Rev Problems
It so happens that both ECUs, despite the different designs, use a similar mechanism for triggering a TPS recalibration.
I is in your loomz nibblin ur wirez
#bemoretut
#bemoretut
Re: MIL Light On and Rev Problems
Cool - happy to be wrong in this instance. I suppose I should always give the disclaimer that in general, my S2 specific knowledge could be written on the back of a postage stamp. 
2010 Honda VFR1200F
1990 Honda VFR400 NC30
2000 Honda VTR1000 SP1
2000 Kawasaki ZX-7R
1990 Honda VFR400 NC30
2000 Honda VTR1000 SP1
2000 Kawasaki ZX-7R
Re: MIL Light On and Rev Problems
Just out of interest, I disconnect my battery when leaving for a period to stop the battery dying. Should I do this every time I reconnect it? Seems to run fine without doing so?
Ali
Ali
Re: MIL Light On and Rev Problems
It was my belief that the ECU would automatically initiate TPS recalibration when you leave the battery disconnected, but maybe you need to make sure you use full throttle once or twice to be sure it sees min/max? The truth is that none of this stuff is properly documented (at least not in the public domain!).
Cheers,
Robin
Cheers,
Robin
I is in your loomz nibblin ur wirez
#bemoretut
#bemoretut
Re: MIL Light On and Rev Problems
Cheers for all the advice guys, will probably give it a shot this weekend and see how I get on and what happens and then take it from there
Stevie - That would be awesome if I could borrow that at some point to see if it does fix the problemsteviej wrote: As mentioned before I have a spare throttle body / tps that you are welcome to borrow.