20v idle help

[Ben Wilson]

Interesting - I would have thought that as it was sold as throttle body and carbie cleaner nowdays that it would be OK...

[S.W.A.M.I.]

I had the exact same problem with a conversion.
car would never idle.......it would rev laggy somewhat like a missfire.....i thought it was ISCV but I did a compression test just to be certain.
cyl1: 50psi
cyl2: 65
cyl3:150
cyl4:55

the rebuild is almost done.....hope to have it started within the next few days.
i hope you dont have the same problem i did..

[Timma]

Just run through some checks and narrow it down
Get a stock AFM and try that
(Check for vacuum leaks) most likely this one!
Check fault codes from ecu
Check Idle control valve
Sparkplugs + Leads
Throttle Body could be sticky

[sideshow]

these days new cars more often have coated butterflies

i have heard this can cause probs in fords too

if u use a too strong cleaner on butterflies

anyway hows the idle goin

you can always bring it up to sydney and i can have a look at it

[DeftAnesthetik]

kinda going somewhere else with this but since it is kindof on topic i didn't wanna make a new thread.

so is there one 'cause i'm havong problems finding it
thanks

[oldcorollas]

some throttle bodies like nissan gtirs have teflon coating over the butterflies

carby clean might eat this layer off and u might get a permanant hi idle
if car was runnin right

teflon can dissolve?




(edit:.. perhaps if the carby cleaner contained Fluorinert FC-40 or FC-75... but i highly doubt that... got proof the throttle are coated with teflon and not something else?)

[sideshow]

might not be teflon but ive heard and seen people stuff butterflies by doin this

[oldcorollas]

might not be teflon but ive heard and seen people stuff butterflies by doin this

ahh, maybe nylon or similar then.... from what i can see, my 20V throttles are not coated with anything except with dirt and oil
i'll see if i can have a look at some of the nissan ones..