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94 Verada/Diamante - Stalling Problem - Any ideas ?

Hi,

Has anyone had any experience or knowledge of what is causing my Verada/Diamante to stall ?

Bascially I can drive it around for 5-10 minutes (longer if there are no stoppages or idling eg traffic) and then all of a sudden the revs drop and the engine stalls when I brake (or slown down without my foot on the accelerator).

I had the car serviced and the mechanic of course couldn't repeat the problem. He adjusted the idle controller and checked the engine managment computer for errors. There were no errors stored in the computer (which he said is unusual). Anyway he ultimately said he wasn't sure what was wrong.

The common link appears to be a stoppage after about 10 minutes of drivingn - but not sure if this is directly related. I managed to drive around the neighbourhood for almost an hour with out the stalling occuring, but after I stopped at the service station to pick up some things and left the engine idling for a minute or two the stalled then occured just after I started driving again.

Thaks

Jason.

Reply to
Jason
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Are you accelerating when it stalls? Or does it stall when your foot is off the gas completely? In the first case, it sounds like a vacuum leak. In the second, ISC.

Reply to
Nobody U. Know

Only when I take my foot off the gas. So must be the ISC (Idle Speed Controller ?)

Thanks

Reply to
Jason De Mullich

Yep!!! the ISC is taking a crap.

Reply to
Eclipse

Well then, you have two possible solutions. Fix the ISC or replace it. The ISC is on the throttle body and usually easy to get to. Every Mitsu I've seen only had two 10mm bolts and an electrical connector holding it on. Some required removing the battery, but that's not that hard.

If you are mechanically inclined and have another car, take it off and see if is the type that can be disassembled (and this is only possible on early models..before mitsu figured out you could fix it and save money. If it is, you may be able to fix it.

There are two types of failures. One is caused by a circuit inside heating up and opening to infinite resistance. The other is gunk on the internal electro magnets. These just energize and pull the plunger in and out (also the plunger can get gunked up).

The three copper connectors are obvious, just resoldier the bad connector. If you take the plunger out , there are a series of diamond-shaped metal plates. Those get very dirty and loose their ability to pull the plunger in and out. You can clean those and fix it too. I've done it before and it wasn't more than 1 hour of work, if that. The part is about 300 bucks and about 400 installed.

Here is a detailed trouble shooting site. This is for DSMs, but it applies to all Mitsus:

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Reply to
Nobody U. Know

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