Question about 1992 Mitsubishi Diamante

1 Answer

'92 Mitsubishi Diamante - Stalls sometimes when come to a stop

Sat for the last two years with maybe a 1/4 or more tank of gas. Wouldn't start, so just put a new battery in. Put some high octane gas on top of old gas and it would stall when come to a stop. We put Gumout injector cleaner in today. It comes close to stalling when come to a stop but hasn't yet in the couple hours since putting in the cleaner; but it comes close stalling because RPM's get down between 4 and 500 when come to a stop., Auto Zone tested alternator today and that's fine. They said to just keep putting high octane in from now on and do the injector cleaner once a month. But why does it idle so low when coming to a stop? Carburetor adjustment? throttle adjustment? did the 2 yr old gas really just gum it up? is it a computer issue with the idle control? I know it could be a myriad of things. Over two years ago it would idle around 800 or less also but not stall, I just want the RPM's up in idle!

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.


    An expert that hasĀ over 10 points.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 17 Answers

Find the Idle air control valve on the side of the intake and then take off and clean or replace you could try taking a small ball peen hammer and tapping it lightly while it is idling let will genarly free them up

Posted on Mar 04, 2009

1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer


if its smoking thats a shorted system..if you feel safe with fixing it do so otherwise get rid of that deathtrap..

Dec 25, 2013 | 1992 Mitsubishi Diamante

1 Answer

Stalls at a idle with ac on

Could be a dirty throttle body or air control valve.

Jul 04, 2012 | 2003 Mitsubishi Diamante

1 Answer

Need to know how to syphon gas out of my1993 Mitsubishi Diamante and hose gets stopped by something before reaching the gas tank. Bad gas was put in my car when the power went out due to tornados here in...

you can't syphon the gas out on these vehicles. They have a ball that is in the metal hose on the gas tank to keep any large object out of the tank. Your best bet would be to drop the tank, and take the fuel pump out and dump all the old fuel. Hope this helps, James Booth

May 17, 2011 | 1993 Mitsubishi Diamante

2 Answers

Last nite while driving to Kansas for an emergency I stopped in a small town to get gas, when I got back on the interstate everything seemed fine till about a mile down the road my car started cutting out...

i think you have diesel in the tank and not petrol ,if you cannot get help gat back to me in the 15mins before i go to work and i will tell you how to pump it out with a length of wire

Jan 05, 2011 | 2003 Mitsubishi Diamante

1 Answer

Idle problem with 92 diamante replaced the intake

your idle sincer is gon bad or is going bad needs replacement

Jan 05, 2010 | 1992 Mitsubishi Diamante

2 Answers

Stalls after getting gas then starts fine. Also noticed it idles rough at other times. No trouble codes. Any thoughts?

When it stalls after getting gas, are you filling the tank up beyond the first stop? I was filling mine up after the pump shuts itself off in order to top it off as much as possible. I learned this can plug some type of purge vent or something like that. I stopped topping it off and haven't had a problem since. Mine would hesitate and then die at the first couple stop lights after getting gas. From what I've read, the cheap fix is not to fill it up past the stop point, but the permanent fix is to replace the gas tank since the vent physically part of the tank.

Apr 21, 2009 | 2004 Dodge Caravan

Not finding what you are looking for?
1992 Mitsubishi Diamante Logo

532 people viewed this question

Ask a Question

Usually answered in minutes!

Top Mitsubishi Experts


Level 3 Expert

63661 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21988 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6812 Answers

Are you a Mitsubishi Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides