Idle question

[WhtEclipse705]

Ok, i searched around a bit.. and haven't seen anything like this.
i have a 95 eclipse RS with header, Intake, muffler, and i have been told the head was port and polished.. i didn't have it done. it was done before i bought it.

to the problem..

in the mornings when i start my car up,(Late fall and winter) it starts normal, then idle goes up to like 1500, and slowly falls down, drops to like 700 and my engine sounds like it chokes out.. it doesn't stall, but my engine sounds starved for something. normally the intake sounds a little hollow, but this is extremely bad. i also just noticed on my A/F gauge (i know, not accurate) that when it sounds starved, it shows extremely lean.. because normally its at least near the green end.. after it does this for a few seconds.. the engine raises the RPM's up around 15 again.. and slowly falls down to normal range. on a very cold day, it might do this a few times, on warmer ones.. only once or twice. also.. when i reverse out of my carport... it just about stalls out but doesn't.. unless i let the car warm up for at least 10 minutes.

I often use Lucas and Seafoam and run Val. Max Life, engine With 11400 on it


2 or 3 ideas i have for this.. confirm or explain why i am wrong.. i don't mind

Bad fuel pump? (bad mileage around 18mpg)
Clogged Fuel filter (car is kinda laggy in response)
Timing off? (very rough idle.. almost like i have Cam Gears)
I have a engine that hates cold air?? (is that even possible)
Not sparkplugs ( i just changed them and it did this before and after)

Thank you for all your input.. any ideas you have a much needed

 

[justin0469]

http://dsmparts.com/customer/product.php?productid=165&cat=121&page=1

but before you spend all that money, a $7 bottle of injector cleaner wouldnt hurt and check the fuel filter.

 

[WhtEclipse705]

Thanks for the link.. has anyone installed this part, and it so.. is it legit? i use lucas and seafoam all the time.. so my injectors should be clean.. but thanks for the idea.. and the link.

 

[justin0469]

its a OEM mitsu ISC, same part thats in your car, just a working one

 

[WhtEclipse705]

Can anyone give me some more information on this part. i read the description, and i might order one and give it a try.. but i dont know anything about this... i refered to my chiltons, but they didnt have any information on the ISC.. a diagram would be awesome.. or maybe even some pictures. and people have used this right? thanks again..

 

[justin0469]

its a replacement part, search for ISC on here and you will find endless threads about it. From my understanding it operates with wax that is softer when hot and harder in colder weather. after awhile it loses its effectiveness

 

[WhtEclipse705]

Thanks again for the help... I work at Napa auto parts, and i checked for the ISC, but we didnt offer it.. so i called my Local Mitsu Dealer, which is Gezon Motors, and they were able to order that part.. Heres the info.. for my 95 RS with the 2.0 NT

Idle Speed Control Motor
Part number: 04796503AB
List: $123.53

So if you have this common problem.. as the guy at Gezon said it was.. then buy from your local dealer, not that website.. cause its cheaper.

http://dmtalon.v8eaters.com/ISC.html

Hopefuly this thread can help someone else now.. i am going to let you know if it fixed it once i install it..

Thanks again..