90civicSi VTEC

96 civic 1.6l non vtec automatic, just bought the car with a known idle problem, thought it would be a vacuum line, its not, tried to clean the sensor that is on the intake which coolant flows through and tells the computer when to let the car idle down when its warmed up, what else is there??

Fatchance187

iTrader: (2)

air in the coolant is a possiblity,

90civicSi VTEC

not the coolant either... I unplugged both TPS and MAP and car idles perfect... I wanted to take the TPS off but i dont see a way to do so...

VIhondaman

try this, the fast idle thermo valve located on the underside of the throttle body has two sides, (you have to remove it). On the side facing the firewall(that's the side by the windshield) there's a plate which has two 8mm screws, remove them and there is white plastic nut(two slots hole in middle) see if its loose tighten it reassemble(that's usally the problem).

VIhondaman

it slows the idle as the car warms up.

90civicSi VTEC

does this have a magnet on it which works with the temp or flow of coolant into the throttle body?

VIhondaman

this is my last post for today, i cant use im (trial) as a matter of fact i did yesterday to a friend's car, it sits right under the throttle body and has coolant passing thru it.GL

jasony0630

Either the fitv or iacv has owned you.

90civicSi VTEC

theres no fitv on my car

jasony0630

I said either.

So that narrows it down a little doesn't it?

gsrhatch2356

If you want to test the fitv which more than likely it has one, if you look into the throttle body you will see two holes one high which is iac and one low which is fitv. while the car is idleing funny put your finger over the bottom hole and if the idle smoothes then replace the fitv which is located at the bottom of the tb.

chazfehn

Your not alone my firend. I had the same problem. My map sensor was bad. But i also took off that piece on the back of the intake manifold. (2 10mm bolts, and I forget what it is called) Clean that with some carb cleaner on the rag. (spray the rag then clean it, I wouldn't sugguest just spraying it in there) And that did it for me....


94 EG Bub, Mini-Me, P28


ON-DA-FLO

jasony0630

I just took all that **** off.

Throttle body and Iacv.

Dismounted the FITV from the TB. Cracked the FITV open, tightened and cleaned that huge plastic white screw thingy inside. Same with my IACV. There you go, done!

And if you still have an idle issue, it could be a vacuum leak, coolant leak, or [freak]ed up timing.

90civicSi VTEC

ANYONE else?

90civicSi VTEC

still working on it, any and all advice or knowledge is appreciated

jasony0630

obviously you have not "searched" or "googled" how to take an fitv or iacv off and how to clean them.

chickenwing

I have a similar issue still after cleaning the IACV, and throttle body.
I have changed the fuel filter, cap, rotor, and spark plugs.
It would also stall after coming to a stop pressing in the clutch.

chazfehn

Definately a vacuum issue. Anyone out there on H-T have a Vacuum line diagram? I could use one too! lol

chickenwing

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by chazfehn &raquo;</TD></TR><TR><TD CLASS="quote">Definately a vacuum issue. Anyone out there on H-T have a Vacuum line diagram? I could use one too! lol</TD></TR></TABLE>

I don't have much vacuum lines connected to the manifold.

RitcheyRch

Mine idles low as well and have recently replaced the idle control valve.