hi
when my iscv is plugged in if i blip the throttle it will stick at around 3000rpm until i disconnect the iscv
ive set the base idle, fitted a sensor kit from mat lewis (cts, phase, crank, air sensors etc..)
ive tried cleaning the iscv and even swopped it for a different one but the fault remains
if i disconnect it the fault goes away but of course from cold runs lumpy for a minute or so then is fine
if i connect the iscv at idle the revs raise slightly then settle back down so the sensor must be doing something at least.
could antone shed any light on whats causing this??
cheers in advance

 

That's how they go, a duff iscv it is then!!
tabetha

 

I disagree the fact when the ISCV is D/C the revs drop shows the ISCV is being TOLD to open by this much, you seem to have replaced almost every other sensor apart from one of the sensors which actually gives an input related to idle speed the TPS so check the calibration.

Martin

 

ill check it mate the other sensors were replaced because i had a kit to do them not to try and cure this fault i just thought while it was now running sweet and back on the road with winter on its way id better sort out the cold sart!

 

i had this problem years back and it turned out to be the tps (throttle position switch) which was at fault, it worked perfectly after the switch was adjusted to give the correct reading. HTH

 

cheers ill give it a try tommorow and post back with results

 

any joy????

 

finally goy round to sorting this, the tps readings were good just backards lol im running a 4x4 ecu with 2wd wiring loom so switched the outer wires round on the tps and now have coldstart and a fully functioning iscv!

 

and now the bloody coldstart has stopped working again