Quote Originally Posted by JohnL View Post
It doesn't necessarily mean that no TS adjustment is ever needed, just that it may not be so easy when it is (?).

The Accord TS set up (with the adjustable threaded TS screw installed in the TB) is "solid metal" too, but over deep time the contacting points (steel to steel) obviously wear slightly (it doesn't seem to take much wear at all to cause a significant closed throttle voltage change, so it's good that wear will be very slow to occur).

If the y4 TS is steel contacting against the softer aluminium of the TB casting, then the aluminium contact point might wear faster than the Accord's steel on steel TS contacts (but I'm not sure, it would depend on the size of the contacting area). There may be a 'tab' on the cable pulley / wheel that can be 'tweaked' in order to adjust the TS...? It might also ber possible to adjust it by say gluing some metal shim onto the contact point???

Adjustment to the TS will only be needed if the TPS closed throttle (CT) voltage is off spec. If the WOT voltage is off spec then the the TPS rotational position needs adjusting (as per beeza's 'how-to').

So:

If only the CT voltage is off spec, then only the TS needs adjusting.

If only the WOT voltage is off spec, then the TPS itself needs to be rotated to bring the WOT voltage back into spec, and the CT voltage must then be re-adjusted using the TS.

If both the WOT and CT voltages are off spec, then the TPS needs to be rotated until either both the WOT and CT voltages are within spec, or, the WOT is within spec and the CT then adjusted using the TS.

In all cases the TS should only be used to adjust the CT TPS voltage and NOT the idle speed. Any adjustment to idle speed should be by means of the idle speed screw.
Gotcha John!

I'll summerise the above into the Tps thread,thanks heaps mate,this fills a void that was forming in my mind.

There is slight wear on the metal contact point,it's slight but it's there,I'll get a pic up soon

If the wear was bigger you could glue/weld a bit of metal on there.Maybe you could just give the aluminum part on the TB (that holds the accelerator cable) a little tweak with some pliers.Just 'bend' it ever so slightly?

I'll check my accelerator cable for some adjustment 'tab'

I realise now I need to include adjustment of the accelerator cable in the DIY cause if there's slack there it sucks