clean IACV & EGR valve
 

i have 90 N/A body with 91/92 TT swap, manual, have hunting idle, was goin to clean the IACV and GER valve.
for IACV, do i just spray WD40 into the hose that goes into the IACV while teh car is idling?
fo EGR valve, looks like it right inbtween the firewall and back of the engine, very hard to get to, anyone knows how to have it removed and clean, i am thinking of cleaning teh throttle body too, removing throttle body does not require to replace seals and worry about torques right?
i am fairly new to Z, it would be nice if i can read thru the whole procedure before i start, so i know what i am doing.

you could have just "bumped" your old thread. cleaning the EGR is a really big job. i wouldn't be considering it. yeah, spray the wd-40 down the tube i told you to.

you need to keep searching for what the problem is though. i was just throwing some ideas out. did you ever check your codes? like i said, there are a ton of threads on this stuff out there, you just have to search for it.

sure, will do.

Remove the EGR system. Seriously. It's garbage.

i would love to, do i have to remove the whole throttle body inorder to reach that whole EGR system?
also, i am tryin to spray WD40 to clean teh IACV, but i am not sure which hose is, i pulled hose "1" out, there's suction from teh male end, should i spray into it?
here is the pic http://www.flickr.com/photos/23732694@N03/4585309773/
how do i directly have the pic insert in here?

no no. you need that big fat hose that comes right off the middle back of the balance tube. follow that tube about a foot toward the center of the car and it's there.

The plenum (at least) must be removed to eliminate (or disconnect) the EGR system.

http://www.flickr.com/photos/23732694@N03/4587874068/
this hose?
hopefully this solve the problem, so i dont have to go to the EGR, now i am having the power steering problem need to be taken care off, it leaks once i turn the wheel. stop leaks if i dont turn the wheels. just had the PS installed last week.

Probably the high pressure hose... they're generally problematic and the actual cause of most power steering problems (people assume it's the pump and waste money replacing it, when nothing's really wrong with it).

hey, zloverforlife, is the pic shown above shows the right hose that i need to spray with WD40, to clean the IACV?
so i may have to remove these air pipings again :( in order to have the high pressure hose removed(if thats teh problem), that was pain.

I've never cleaned the IACV while it was on the car, so I'm not sure how effective your approach will be, but that is the hose to the IACV. I don't know that you should be cleaning it with WD40, though... generally, when you're dealing with intake-related parts, you should use Carb/Choke cleaner. I'm not sure how WD40 will burn off in the engine.

As for the PS hose, you should've done your research when you were in there replacing the pump... it's pretty common knowledge that the high pressure hose is problematic. And yes, it'll require removing the intake hoses again.

thats what i thought, use carb cleaner, but others recomand WD40.

What "others"?

kazbekz used WD40 on his, it worked for him.
i just read some threads about PS, so all z use ATF instead of PS fluid? i put PSF into my power steering system, is this y f***s it up? i only drove about 20 miles after the Power Steering Pump being installed.
what should i do now, turn on the z, jack it up and see where the leakage is? or flush the system?
plz help, i am new on mechanic. thanks

Dude, first off, you SERIOUSLY need to start doing your research before you ever touch anything on your car. Yes, the PS system takes ATF Dexron-III exclusively. You probably didn't damage anything using PS fluid for such a short time span, but definitely flush it.

And yes, jack it up and find the leak before paying for any replacement parts. I suspect it's going to be the high pressure hose, or perhaps when you were working on it before, you didn't install a crush washer and it's leaking from a banjo bolt.

i did put those copper washers in, both sides. i have done PS installatoin on my civic, thought z are the same way. lol, turn out not exactly the same, i definitely need to pay attention, especially to things that i think it is "easy".

i had found out it leaks from the pressure hose, near the power steering pump. in order to remove the hose from the rack and pinion end, do to lose the m10 bolt? see image http://www.flickr.com/photos/23732694@N03/4589924983/ then pull the hose out?

WD-40 is fine for the IACV. i've had it recommended to me (through forums. there is a write up on this topic somewhere) and i use it pretty frequently. i've even used fairly large amounts and not noticed an issue in run quality upon start up. carb-throttle body cleaner probably will be better though. i'm sure it has better cleaning properties.

you should read people's signatures. they often have useful info in them (talking about mine and zlovers, not that his pertains to this case)

i had the tube disconnected, air was sucking into the metal tube instead of the rubber hose, which i didnt expected.
anyhow, i spray some into the metal tube at teh same time i block it with my finger so the engine doesnt stall.
am i doin it proper? my car still have idle problem.

Why did you disconnect it while the engine was running? The engine should've been off.

And of course air would suck in through the metal tube... that's how engines work - they create a vacuum condition in the cylinders which draws air into the plenum through the filter. You essentially disconnected a hose between the filter and the plenum, so of course the plenum side is gonna continue trying to draw air in. That thick hose is what supplies air to the engine at idle (after the IACV regulates the amount of airflow).

which hose goes into IACV? i unplug the water temp sensor while idling rough, no sign of changing either. but first of all, i would like to clean the IACV at least.

LOL I just re-read what you did. Dude, you need to take your car to a [Z-familiar] mechanic if you're simply not that mechanically inclined.

You were supposed to spray into the HOSE... which leads to the IACV. All you did was spray into the engine...

my friend has couple Zs and he is a mechanic, other than that, i dont know any Z proffesionals around philly area, maybe i should ask around or do some research.
i am obviously not that mechanically inclined, i am here to learn.
my z is miss firing too :(...

make sure it has the correct spark plugs. there is only one type of spark plugs designed for your Z. get the right ones.

you need to spray the stuff toward the sensor, not toward the engine. get your bearings strait in that respect just looking around. identify the parts that you're working with.

bernie is not "close" to philly, but NOVA is not crazy far away. bernie is one of the very best z mechanics around.