whats wrong with my 20V?

[sideshow]

if its disconnected it will bring up code
if its shorted to ground it wont bring up code

but this wont make it idle over 2000

[c2888]

I'd pull every vac hose off the engine and replace it with either new new new rubber vac hose, or the older good stuff toyota use to use. Some where along the line (20v era) toyota must've changed rubber tubing supplier, or the supplier changed the rubber because it all falls apart.

It splits around the edges where it's been pushed over the nipples, it cracks around bends, and it generally just falls to bits.

I've seen a few and it seems to be a common problem, if it's idling crazy, you're definately getting more air.

Dan

[Sam_Q]

aaaah shit, theres a whole maze of rubber hoses under the throttles, and it would take atleast an hour to get the airbox and trumpets off. But if it does have a leak why would it run rich? wouldnt it be the oppersite?

[xolent]

it sounds like what i have; no o2 sensor!

reason for the back fire is because your 20valve has no o2 sensor so it's running rich atm.

[Sam_Q]

i do have one!!, its just far down thats all, it is a 3 wire so its ok. I will check that though.

[xolent]

yeh i meant that it might be stuffed when you cracked the piping!

[Sam_Q]

it shouldnt be, its only done about 10,000km! Its off a Ford, I dont think that makes a difference though

[Sam_Q]

I changed the airflow meter today and it didnt change anything, next on the list is the TPS I guess.

[roadsailing]

O2 sensor will make absolutely no difference, i have never run one for various reasons.

[Sam_Q]

thats what i thought because it isnt used for anything over light loads, besides if it was tottaly stuffed I woudl of got a fault code by now

[Sam_Q]

hey could it be the idle control valve?