[Legend_master]

So my legend has a very odd idle if I let it sit for awhile it will rev up and down between 1 grand and 3 grand. It dosent do it right off the bat but only if I let it sit then the check engine light comes on. So I took it to a mechanic to read the computer module, he told me that it was an ecv problem or exaust controle problem, but did not no exactly what it was. I was wondering If anybody new what this problem was and how expensive it would be to fix?

Thanks all Please reply

 

[BLACK93LEGEND]

I had the same problem with my 93 Legend about a month ago.. It was my Idle Speed Sensor. It Reved between 2000 and 3000 up and down.. sometimes it would idle so far down it would cut off but it would only happen when the car got cold. I took it to the Acura dealer where they put it on the Computer and found out that it was my Idle Speed Sensor. The cost for the part was 125.00 and with labor it came out to be 273.18. Good Luck on getting that fixed and I hope this info helped a little.

 

[Legend_master]

ok thanks very much. you right i forgot ot mension it died when it was cold.

 

[pyros88legendcoupe]

its called a EICV ( electronic idle control valve)

its the one that says denso on the top in your engine. its located arond the vacuum line bracket. you can replace it with a new one by just takeing out the 2 bolts and putting the new one on top. took me about 5 mins to do. if you don't have the cash you can open it up and clean the thing really good. and replace all the seals if you can.

go into your car and check the engine code light. located under the carpet up on the firewall on the passenger side.

it will probly blink 14 times and start over. that is the EICV

now typically the car would only rev up to 1500 or so. so you could also have a problem with the EGR ( 12 blinks) if so check and make sure there are no vacuum leaks ( put soap on the lines listen with a scope, or another secret. use a propane torch and turn it on without the flame if the engine sucks up any propane it will increase in idle speed right away)

the vacuum line could even be disconected.

your EGR is located right underneath the distributor. it has a vacuum line running straight down across the engine into the EGR.

 

[Legend_master]

thank you very much pyro i took apart the eicv and cleaned the heck out of it. Put it back on and it runs great now. So thanks again.

 

[Acura11]

i tried to take my EICV/EACV apart and clean it on my 89 sedan. The only thing i could take apart was the top cover of it where the coolant passes through. am i missing something?

 

[Legend_master]

there sre two big bolts jsut unscew them, but be carefull when you disconect he hoses attached there is antifreeze in them.

 

[pyros88legendcoupe]

your welcome, good thing i bought the biggest piece of sh*t legend. it was so bagged, but it was cheap so i don't care.

now that almost everything has broke i got it all figured out .

 

[Acura11]

alright i still didn't figiure this one out. on my haynes manual it says the EACV valve is what we are actually calling the FICV? well either way i took off the FICV and then took off the 3 screws popped the top cover off and it was pretty much spotless. then i didn't see anything else left to take apart so i put it back on there. then i figured out that the hayynes manual is wrong? i need to be cleaning the valve that is closer to the front of the throttle body.

see pic that Mr. Smith posted on another thread. FICV and EICV.

here is the actual thread:Idle Surge Fix

however i have a '89 sedan and its not called a EICV but EACV.
that pic i guess is from a 2.5 and it doesn't look like my engine, the EICV/EACV valve isn't there. so now im lost, i dont know what to take off because i already took off the other thing and my idle is still all over the place.

 

[pyros88legendcoupe]

ok, let me see if i can help you here.

in that picture the thing your calling the EICV is the throttle body. it's controlled by the gas pedal and controls the amount of air coming in. now the thing your calling the FICV is the EICV or the EACV ( electrnoic air control valve). now the eicv and the eacv are the same thing. mine has a eicv yours has a eacv. it all depends on the model.

now there is one 2 pin plug going into the eicv. if you unplug it and test between the 2 terminals with a multimeter it should read under 20 ohms.

try cleaning the thing you called a eicv

 

[Mod89Coupe]

Ths is the best thread I've seen in a while!!:bowdown:

Thanks for the heads up. This will be my next DIY.

 

[pyros88legendcoupe]

the FICV is the fast idle control valve. its someting else attached to the TB.

if your EICV reads more than 20 ohms, replace it. you can try cleaning all of the stuff attached to your carbs. as long as you have the right o-rings and seals.

the choke,
EICV / EACV
FICV
Throttle body

it all controls the amount of air flowing into your engine. any gunk,dirt,film will screw up the engine idle and air/fuel mixture.

Im sure it won't hurt if anyone cleans these all out. im sure many ppl have gunked up throttle body's. and i haven't really heard of the EICV going out until mine happened. since then this is the second post i've seen asking about it.

my car was sitting for about a year mabye thats why ? but chances are alot of ppl's eicv/eacv are going to start going sometime. Legends are over 15 years old. new things will start breaking for all of us soon or later.

REMEBER when working with any Air-flow stuff. you must make sure there are NO air leaks. this will cause lean conditions and could damage the engine. this dosn't mean over torque anything.

make sure you use new gaskets and orings for anything you take apart. you can use some kind of gasket maker if you need to.

clean with gas and brake cleaner or carb cleaner. And don't get the cleaner on anything non metal ( mainly orings).

Once your finished start your engine and listen for air leaks. if theres non use soap and water. or even better use a propane torch that isnt lit and move it around all the Throttle body stuff and around any vacuum lines/ EGR valve and lines. the vacuum box. if the engine increases in RPM you have a leak.

Good luck