Question about 1993 Mitsubishi Diamante

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My 1993 Mitsubishi Diamante will not start in cold. Also when it finally does decide to start it'll shut off. The electronics stay on, but the car cuts off. I'll drive it to the store and walk in to buy something, come back out and it won't crank. I'm confused , don't know what the problem is. Please help!!!!!

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  • Kimberly Cloninger
    Kimberly Cloninger Oct 15, 2013

    The timing, belt, spark pugs, and spark plug wires were all replaced about 6-7 months ago. Also the alternator was replaced last year. I had the battery tested, and it's good. Just wanting to pinpoint what's wrong before spending money.

  •  Russ Hill
    Russ Hill Oct 15, 2013

    try cleaning out the breather lines, check the air filter. also check the idle control . also check for an air leak on the vacuum lines. vacuum lines also control the fuel pressure valve and it that does not ope the fuel cannot get to the injectors. 1993 mine is 1994 model car and ive had to change all the vacuum lines as they started cracking and the plastic joint split and was leaking air caused a lot of problems from heat lose to not starting so would defo check the vacuum lines.

  • Kimberly Cloninger
    Kimberly Cloninger Oct 15, 2013

    My friend looked at it and said that the number one fuel injector was weak... working but weak. I'll have all of that checked though thanks! I'll post an update on this in a couple days after I have it looked at. Think I'm just gonna print this page out so the mechanic can check these things.

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  • Mitsubishi Master
  • 3,180 Answers

When was the timing belt last changed. ? could be this.
also check breather lines all of them there may be a blockage.
check spark plugs and leads this can also lead to this fault. an damaged or week lead or spark plug will take more to get going. leads can wear out and go hard and crack inside. spark plugs gaine in the gap size over time.

Posted on Oct 15, 2013

  • 1 more comment 
  • Kimberly Cloninger
    Kimberly Cloninger Oct 15, 2013

    I'll mention this to my friend, i've had him look at my car, we just can't pinpoint what's wrong with it.

  • Kimberly Cloninger
    Kimberly Cloninger Oct 15, 2013

    The timing, belt, spark pugs, and spark plug wires were all replaced about 6-7 months ago. Also the alternator was replaced last year. I had the battery tested, and it's good. Just wanting to pinpoint what's wrong before spending money.

  • Kimberly Cloninger
    Kimberly Cloninger Oct 15, 2013

    Everyone keeps saying fuel pump. When my car finally does decide to crank, I smell gas really badly. Check engine light comes on for a couple minutes, then decides to go off. Main symptom: Won't start at all in cold.

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6 Suggested Answers

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  • 2 Answers

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Posted on Jan 02, 2017

  • 2 Answers

SOURCE: Car shuts off when braking and stopping

I fixed mine by cleaning the throttle body.  Just take the hose off of it, spray some throttle body cleaner in there, and wipe it out with a VERY clean cloth.  Then replace hose.  Piece of cake.

Posted on Jan 23, 2009

  • 156 Answers

SOURCE: looking for a free repair manual for a 1992-1993 diamante

although i cannot send you the file i have found you a manual. Go to PDFTown.com and look for the Verada Magna Diamante manuals. This should suffice for most of your need with your car. Once you download it you will have to open the setup files to get the actual PDF file that you need. Hope this takes car of everything you need!

Posted on Mar 02, 2009

c17hydro
  • 2984 Answers

SOURCE: Loud pop, timing belt ? , mitsubishi diamante 00

Very possible it was the timing belt. If the main serpentine belt seems loose, it also coould be your pulley. If you can check it now, the tensioner pulley is the one you see that is very silver looking on the side that actually supports the OUTSIDE of the belt. If you can go take a look at it now, grab ahold of it and try to move it. The only motion it should make is a spinning motion....this will be step one on figuring out the problem....will take one minute to verify.....

Posted on Mar 14, 2009

  • 83 Answers

SOURCE: when in drive the neutral indicator light flashes

Check your ATF cooling system. Your transmission fluid is overheating. This might be after a hard drive. The fluid might need to be replaced too.

Posted on Sep 01, 2009

  • 1 Answer

SOURCE: car cutting out from cold start

You need a 10 mil and 8 mil spanner, carb cleaner and mabie some wd40.
Remove the big hose which goes from the throttle body to the air filter housing. Under the throttle body there is a idle control valve, unplug it, spray some wd40 on the 8mil bolts and take them off. Clean the idle control valve and housing and anywhere else which looks dirty, dry it with a lint free cloth and then put everything back on.
remove the battery negative terminal and leave it off for 30 minutes, this will reset the ecu to factory settings.

On the top of the throttle body there is a black circular rubber screw cover, take that off and there should be a plastic screw.

Connect your battery and start your engine, unscrew the idle speed control (plastic screw) so it revs at 2000rpm cold. When the temp needle reached the middle so it revs at 1000rpm hot.

This should solve the problem, if you drive around and find that you in 4th gear, with your foot off the accelerator and the idle is going up and down madly then the idle control valve is worn out and it needs replacing. Cost around £125 on ebay.

Posted on Jan 18, 2010

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