1992 Mitsubishi 3000 Gt Not Running Right Options

[bumpn]

hello everybody i am a new owner of a 92 mits 3000 gt sl!!! i just replaced the ecu and got the car running but it is running real crappy.. i do know the gas is over 3 yrs old so i ran it almost out and replenished the fuel tank with fresh 93 octane gas.. the car doesnt want to seem to idle right, some times it runs smooth and after several minutes it almost stalls out and almost dies but then it catches itself usually and smooths back out.. when you put it in gear it usually dies. ive noticed after running it until it gets warm its really difficult to start back up at times as well. at this point of time im not sure what to try and replace or test next. it has new plugs and new ecu. the car has been parked for over 3 yrs and my dad said it was encountering a slight idling prob when it did get parked three years ago so i was just wonderin what to check to get it runnin like a top again

[anyadang]

You got it running - that's key! The rest shoudl be easy, right?

Maybe replace your PCV valve?

There are some sensor and motors on the throttle that help maintain idle - make sure those are in good shape / connected. If you have a good computer, you can test they 'click' when actuated.

Keep us posted... I'm having a simular problem on a car right now, but I had to replace the fuel tank (hoping the gaping hole had somthing to do with my issues) - will find out today when I get the new tank hooked up.... which reminds me - check for any leaks in your vaccuum and fuel system

[bumpn]

Ok i will check for vacuum leaks first thing when i get off of work.. ive been doing alot of reading and research and is it possible that it could be the iac...idle air control valve?? ive heard that if they go bad it can spike your ecu and fry it... that wood put me in the same boat as before cus my old one was fried wen i bought it from my dad and i remember him telling me that it didnt wanna idle right when her parked it years ago..i let it run three hours the other day and im hoping i didnt spike the ecu

[JwarnerXC]

Yeah my car has a similar problem as well.
were checking to see if its the converter.
youd figure, with everyone having the same problem, wed be able to figure this out quicker? haha

[bumpn]

ok so i finally got the iac out and wow let me tell you it was really caked with oily sludge and carbon and i cood see where this wood be a problem with the idle.. i cleaned the iac and the hole it sits in really good with wrags and q tips soaked in gasoline...really did wonders and just to be safe i even ordered a new iac for 83 bucks at o rileys... ive been told that a faulty iac can fry your ecu over time but im not 100 percent sure if this is true. i get the new iac tomorrow and will let u know how she runs.. any other suggestions wood be greatly appreciated... thank you

[bumpn]

bump....so i replaced the iac this afternoon and still the same problem persists! the car wont idle right and it acts real sluggisg to any acceleration responses. i just replaced the iac hopin this wood be the cure so i wonder what is next. when the car dies it usually wont start back up for a wile and when you check for spark there is absolutely nothing there.. if you wait a wile and start it after 30 mins bam it will run again but ranging from 1000 rpm to 200 and not staying constant... what is nect?? the icm??

[bumpn]

hello once again im sorry if im kinda thread jacking but i just wanted to let every body know that i finally got my icm/ptu replaced today... i didnt no that the icm and ptu was the same part just called different but any ways i did replace that today and with all so good luck the car runs and idles real smooth now and the check engine light went off as the codes got reset and the ecu cant detect any more troubling codes so i guess now problem solved for now.. next i have to replace a rear brake line and get tags and insurance and give the car a good washing and wax job and hope fully it is ready for the streets... it has 139000 miles on it and im unsure if timing belt has ever been changed so i guess i need to save money to get that done cus i know what a bear they are and how much it costs lol...its very expensive ill tell you that now.. thank you everybody for the good help you cood give me and ill keep checking back to help aid others with their 3000 gt problems