Question about 1997 Mitsubishi Mirage

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Car just stops running intermittently; ECU?

I have a 97 LS coupe 1.8l engine w man trans and it happened a while ago for the first time. It now seems to be occuring more frequently; the car starts fine, I drive a distance (long or short, doesn't matter) and all of the sudden the car simply stops running like you turned off the ignition, no dash lights, speedo and tach drop to zero. If I wait a short while (generally 3-10 minutes) I can turn on the ignition, see the dash lights come on and it starts normally. When the car does not have dash lights you can turn over the starter but it of course does not start. Some other points which may help: lately it has happened when use my turn signal (doesn't matter which side). I would think that a) if it was a short it would simply blow a fuse and b) if it was an open the blinkers would simply not work and c) that the turn signals *may* be controlled by the ECU and it has an intermittent problem which is getting worse. I have no trouble changing out the ECU but am hoping for a better idea of whether it will correct the problem before investing in one. I love this car; original owner with 121k & it runs like a top (LOL when this doesn't happen). Any help anyone can offer would be more than appreciated!

p.s. I am familar with basic electronics, so if there are any detailed tests I could perform, even simply a visual inspection of the ECU when apart, please don't hesitate to mention it

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  • Christian
    Christian Oct 02, 2008

    No, unfortunately I don't have an OBD tool. I thought about that as well, but wouldn't the check engine light stay lit when back on for a trouble code in its memory? I suppose I could buy an OBD tool if needed.

  • Christian
    Christian Oct 02, 2008

    Update: it seems I am able to now re-create the problem. I can use my blinker under any circumstance thus far with the exception of--if I turn on my blinker at the exact same moment I go off-throttle to slow down for the turn. Now this may not make sense in a way, but this is why I was thinking that it might be an ECU problem (possibly an 'overload' of certain functions in a problematic section of the cpu?).

    As before any insight on this would be tremendous.

  • Christian
    Christian Oct 02, 2008

    sounds good; I'll give it a try for $15 :-)

  • yadayada
    yadayada May 11, 2010

    I would suggest you use the premium assistance option.

  • yadayada
    yadayada May 11, 2010

    Have you tested the system for trouble codes?? The PCM/ECU is last thing to fail in most cases.



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  • Mitsubishi Master
  • 3,828 Answers

Can be anything from battery terminals to igniton tumbler
to something failing at a heat temperature
coils failure to crank angle sensor

becasue it starts up again
ecu would be the last thing

Posted on Mar 01, 2017


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Posted on Jan 02, 2017

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SOURCE: I have a Mitsubishi Space

see this below link to get a clear view about reparin ur dash circuit board

dash circuit board - part 2: Trial and Error | Angie ...','');">

dash circuit board - part 1: Removal | Angie?s Blog','');">

see this video also to get better idea abt thisbut wat i may suggest is that pls troubleshoot ur problem by giving to ur nearest authorised center becauseto troubleshoot yourself and replace the components is difficult if you have no experience in electronic printer may also need some basic tools to repair this board..

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Posted on Sep 24, 2008

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SOURCE: car stops running suddenly

this could be a fuel pump problem ? had the same thing happen to me ,

Posted on Feb 07, 2009

  • 72 Answers

SOURCE: Eclipse GST 1997/ car running fine then terrible/ 4 codes

yes bad ecu. exat same thing happened to a freind of mine he replaced maf, coolant sensor, distributor all that came trough check engine light. and still the same and chugged gas like crazy and fans were o always. i swapped his ecu with mine n car ran perfect. so he got new ecu and here he is driving happily to this day.

it was a 96 galant 2.4 sohc with around 75,000 miles.

good luck

Posted on Jun 24, 2009

  • 108 Answers

SOURCE: Tach Not working

Get a repair manual that has wiring diagrams. The gauge could just have gone out, or there is a loose/broken wire somewhere down the line. The repair manual will give advice on where to check and what your looking for. Also get a Multi meter to check things. The tach gets its input from the negative side of the coil, so check the wires at the coil and see if something is loose or dirty.

Posted on Jul 17, 2009

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SOURCE: speedo and tach not workingin 1999 elentra

2000 elantra started shifting wierd now it jump in and out of gear when in drive, any thoughts

Posted on Sep 18, 2009

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