Page 1 of 4 1234 LastLast
Results 1 to 10 of 35
  1. #1
    Former Hive Addict radium's Avatar
    Join Date
    Jan 2007
    Location
    Final Table
    Posts
    1,328

    Default My Car won't idle.. Any mechanics in the house?

    Hi Guys, my car won't idle, it started playing up a couple of days a ago, where it kept dying after I started, but then it came right.

    Then yesterday it started car stalling at intersections, now it stalls every time I slow down to an idle.

    I'm no car mechanic, but was wondering if I could some how fix this myself?
    Failing that I will take it to a garage, but just thought it was worth a try asking you all first.

    If it helps I have a 1992 Mitsubishi Galant Auto

    Thanks guys

    Radium
    Too Stupid to Understand Science? Try Religion.

  2. #2
    Senior Member
    Join Date
    Jan 2005
    Posts
    1,366

    Default Re: My Car won't idle.. Any mechanics in the house?

    The easiest things to do yourself are to check, clean/replace the air and fuel filters. Check that all the HT leads are not damaged or loose. If you can, check the plugs as well. If this fails, take it to a mechanic.

    Is it fuel-injected?

  3. #3
    Former Hive Addict radium's Avatar
    Join Date
    Jan 2007
    Location
    Final Table
    Posts
    1,328

    Default Re: My Car won't idle.. Any mechanics in the house?

    Quote Originally Posted by vinref View Post
    Is it fuel-injected?
    Thanks for that, Yes it is.
    Too Stupid to Understand Science? Try Religion.

  4. #4
    Member Grimy's Avatar
    Join Date
    Dec 2004
    Location
    West of Auckland
    Posts
    448

    Default Re: My Car won't idle.. Any mechanics in the house?

    AS vinref mentioned, check the simple things. Battery leads clean and tight, check other electrical connections in the engine bay. If it is caburetted any shop can check/clean that, if fuel injected a Mitsubishi dealer should be able to plug in some diagnostic gear (check with them first if your model has a diagnostic port - and that they have the right gear to check it). Mitsubishi automatics can be a bit fickle with their electronics playing up, although that usually affects the way they change gear. But that can manifest itself as poor running sometimes.
    Otherwise, if you have a mate with a compression gauge that will fit your plug holes, make sure they are even and good. For an engine to run it needs 3 basics - compression, spark and fuel, (at the right time/amount).

  5. #5
    Crossmember feersumendjinn's Avatar
    Join Date
    Feb 2007
    Location
    Levin
    Posts
    2,578

    Default Re: My Car won't idle.. Any mechanics in the house?

    Most likely your Idle Speed Control (ISC) stepper motor has died/burnt out (is mounted on throttle body, 'tis a common problem on that model, would advise taking it to your friendly local mechanic or auto electrician to fix)
    ( I'm a mechanic ;-) )
    Last edited by feersumendjinn; 22-12-2007 at 05:03 PM.
    "...anyone who expects a source of power from the transformation
    of these atoms is talking moonshine..."
    - Ernest Rutherford (1871-1937)

    --------------------------

    Heck is a place for people who don't believe in gosh.

  6. #6
    Smiling Down On Youse SurferJoe46's Avatar
    Join Date
    May 2005
    Location
    Hamilton, Montana, USA
    Posts
    14,317

    Default Re: My Car won't idle.. Any mechanics in the house?

    Quote Originally Posted by radium View Post
    Hi Guys, my car won't idle, it started playing up a couple of days a ago, where it kept dying after I started, but then it came right.

    Then yesterday it started car stalling at intersections, now it stalls every time I slow down to an idle.

    I'm no car mechanic, but was wondering if I could some how fix this myself?
    Failing that I will take it to a garage, but just thought it was worth a try asking you all first.

    If it helps I have a 1992 Mitsubishi Galant Auto

    Thanks guys

    Radium
    First is this.....fuel injected engines DO NOT STALL....unless there's something radically wrong.

    The TPS or ISC or MAF or BARO or might be the CPS might be a problem.

    Check this......is the CEL lit up on the dash? That's a Check Engine Light. If it's on, get the CPU on a bi-directional scanner. The light MUST go on when you first start the engine and go out in just a few seconds. Anything else is just wrong.

    Don't bother with the plug wires, fuel filters or whatever until you diagnose the problem.

    It is a good idea to run a fuel pump capacity test...all systems are test-able.
    Test flow and volume.

    My Snap-On FI tester has adapters for Mitsubishi FI systems..so don't let anyone say they cannot test it.

    Run the Bi-directional scanner...check for and repair the codes that are hard set...then the soft ones, although the soft codes may self-repair when the hard codes are fixed.

    Don't go out and just start buying parts and tossing them into the car..find out what's wrong and then get it fixed.

    BTW: there's no such thing as a tune-up any more...if someone suggests one, they are just trying to empty your cash reserves.


    Warum werden wir so früh alt und klug so spät?

  7. #7
    Crossmember feersumendjinn's Avatar
    Join Date
    Feb 2007
    Location
    Levin
    Posts
    2,578

    Default Re: My Car won't idle.. Any mechanics in the house?

    I agree SJ, thats why I didn't say to try fixing it himself, is a little more complex than swapping parts (unlike playing with computers ).
    "...anyone who expects a source of power from the transformation
    of these atoms is talking moonshine..."
    - Ernest Rutherford (1871-1937)

    --------------------------

    Heck is a place for people who don't believe in gosh.

  8. #8
    Former Hive Addict radium's Avatar
    Join Date
    Jan 2007
    Location
    Final Table
    Posts
    1,328

    Default Re: My Car won't idle.. Any mechanics in the house?

    Quote Originally Posted by SurferJoe46 View Post
    First is this.....fuel injected engines DO NOT STALL....unless there's something radically wrong.

    The TPS or ISC or MAF or BARO or might be the CPS might be a problem.

    Check this......is the CEL lit up on the dash? That's a Check Engine Light. If it's on, get the CPU on a bi-directional scanner. The light MUST go on when you first start the engine and go out in just a few seconds. Anything else is just wrong.

    Don't bother with the plug wires, fuel filters or whatever until you diagnose the problem.

    It is a good idea to run a fuel pump capacity test...all systems are test-able.
    Test flow and volume.

    My Snap-On FI tester has adapters for Mitsubishi FI systems..so don't let anyone say they cannot test it.

    Run the Bi-directional scanner...check for and repair the codes that are hard set...then the soft ones, although the soft codes may self-repair when the hard codes are fixed.

    Don't go out and just start buying parts and tossing them into the car..find out what's wrong and then get it fixed.

    BTW: there's no such thing as a tune-up any more...if someone suggests one, they are just trying to empty your cash reserves.

    Man that all sounds to complex for me,

    I just went out and looked at it, I started it and it's going fine ??

    Maybe I will just take it to my mechanic next time it happens, whatever it is it seems to be an Intermittent fault.

    I did have a problem about 5 months ago, where the car would turn over but wouldn't start, I ended up towing it to my mechanic to look at, I went to pick it up and he hadn’t looked at it, he tried to start it and it started straight away, I asked him what the problem was, he said he didn't know, because it wasn't doing it, anyway he offered a tune up I said how much... he said $200, I said nah don't worry bout it.

    I wasn't prepared to pay him to do a tune up when that may not have even fixed the problem.

    It happened once again about a week after, but tried starting it the next day and it started sweet as. So this time I didn't worry about it.

    Then about a month ago I replaced the battery, because the last one was on its way out, it would die If I had the stereo on for like a min with out it running

    The car has been going fine until the last couple of day where I have had this stalling problem.

    I'm wondering it the two problems are related because it has a much better battery now so that's why it's starting but won't stay running.

    But as I said it seems to be fine right now?
    Too Stupid to Understand Science? Try Religion.

  9. #9
    Crossmember feersumendjinn's Avatar
    Join Date
    Feb 2007
    Location
    Levin
    Posts
    2,578

    Default Re: My Car won't idle.. Any mechanics in the house?

    Sounds like it would be a good idea to take it to somebody with a bit more nous, and a scanner, before it dies
    Just wishing wont make it so!
    "...anyone who expects a source of power from the transformation
    of these atoms is talking moonshine..."
    - Ernest Rutherford (1871-1937)

    --------------------------

    Heck is a place for people who don't believe in gosh.

  10. #10
    Former Hive Addict radium's Avatar
    Join Date
    Jan 2007
    Location
    Final Table
    Posts
    1,328

    Default Re: My Car won't idle.. Any mechanics in the house?

    Would you recommend a Specialist Mitsubishi Mechanic, over my local mechanic, Just I'm not sure as the Specialist place seems to be a bit of a rip off here, but I don't want to take my car to my mechanic and he doesn't have all the testing gear? I don't know it he does or not.
    Too Stupid to Understand Science? Try Religion.

Similar Threads

  1. End Program - WMS Idle
    By Lurking in forum PressF1
    Replies: 9
    Last Post: 18-03-2009, 07:48 AM
  2. Replies: 8
    Last Post: 08-08-2008, 04:00 AM
  3. Replies: 24
    Last Post: 13-03-2007, 01:18 PM
  4. Replies: 11
    Last Post: 15-06-2005, 11:48 PM
  5. mechanics autoshop software
    By falvrez in forum PressF1
    Replies: 5
    Last Post: 24-11-2004, 09:30 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •