Question about Mitsubishi Eclipse

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My car won't go above 50 miles per hour and it uses alot of gas

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  • cadamia Jul 24, 2008

    when the car is started, the gas has to be pumped or it dies. Then it won't go over 50 mph.

  • cadamia Jul 24, 2008

    the car was basically parked for the better of a year basically because of title issues. It was started regularly but not driven. We have recently had to have a relay switch replaced that was associated with the fuel system. Now it is a bit hard to start and it runs ok until you get up to 50 mph. Then it refuses to gain any speed. I think that covers it all.

  • cadamia Jul 24, 2008

    will do, we are flooding here right now as a result of Dolly so I will have to try it later.. thank you tho.

  • cadamia Jul 29, 2008

    it is also come to my attention that it may be the turbo.

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There could be a hundred problems causing this.I need a little more information to give you a definite fix for this until I have more info to work with. Is the engine running sluggish while getting up to 50? have you checked the fuel filter and spark plugs? you might not be firing on all cylinders. I am a *** car expert and I street race a G3 Maxima with 30,000 dollars under the hood including a T4 paxton super charger and kit from my Friend Steve Millen from Stillin motor sports in Cali. I built up this engine myself on a G5 3.5 L block an all NISMO Racing components. It puts out 650 horse at 9500rpm and goes 180 effortlessly. I'm 100% sure I can tell you how to fix this if you give me all the info you have including what you have already diagnosed. Feel free to contact me with the required info and I will have you running better than factory if you want. Get back to me if you need some free expert advice from a pro *** tuner. Hope to hear from you soon. I had a 2002 eclipse all tricked out but I was injured when the tranny blew at 147 under High load and blew aluminum shrap into my face and lit me on fire. Managed to keep it under control and extinguish the fire but I stripped her down and scrapped it after that experience. Be sure to include info on your car such as motor size an year. I would be pleased to help you out
George

Posted on Jul 24, 2008

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  • George Kohler
    George Kohler Jul 24, 2008

    This sounds like an issue with the Engine Control Module (ECM) You can try to reset this yourself buy disconnecting the positive terminal the turning the ignition key to the run position and leave it there for ten minutes. Turn the key back to the off position and reconnect the positive terminal on the battery. This will reset the ECM by causing it to reset itself to the factory default mode. I would also suggest taking the car to a garage the has the device to connect to you care and read and reset the computer. This will tell you exactly what id sausing your problem and will make the repair easy. Most reputable garages only charge 35 to 50 dollars for this. They will tell you what sensor or other device needs to be replaced and you can in most cases do this yourself and save hundreds of dollars. Don't do this until you try resetinng the ECM yourself though. Hope this helps you more, if not ask me for more assistance....

    George

  • George Kohler
    George Kohler Jul 24, 2008

    As it is also using alot of gas you may have a fuel injector that is stuck in the open position. this will flood out that cyclinder and cause a strong fuel smell in the exhaust. Flooding out the cylinder will also cause it not to fire and will rob you of power. You might want to check for this too,

    George

  • George Kohler
    George Kohler Jul 29, 2008

    A faulty turbo will not cause a fuel smell in the exhaust. If the turbo was malfunctioning you would notice it. When you rev up the engine in neutral do you here the turbo spool up? If the turbo is not spinning this will cause some loss of power but only off the top end once it spools up producing hi boost. It would not limit you to 50 miles an hour though. I am 90 percent sure you have a fuel injector hung open and it is drowning out a cylinder on you. This will rob serious power and make your exhaust smell like raw fuel. Go to a salve yard and see if you can get a deal on some injectors and swap them out. After sitting for a lenght of time the injectors are prone to sticking. When you started it up one opened and stayed open. I would bet on it at this point. New injectors are a fortune so if you have a salvage yard near you get them there. They will usually will give you a none DOA warranty. They are not that big of a deal to swap out either. Send me your number to geokohler@ gmail.com and I will call you for free so we do not have to keep typing back and forth. Then we can solve this problem with a 5 minute conversation. I will get back to you within whatever hours are good for you.

    George

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  • Mitsubishi Master
  • 19,396 Answers

Probably the head gasket has gone, or it can be a problem with fueling, take it to a garage.
Check that car is not in limp mode, in this case you will get a red light on

Posted on Jul 24, 2008

  • Ginko
    Ginko Jul 24, 2008

    Check also that the car is not going on three or two cylinder, this is quite common, and cause same effect.
    Check and replace spark plugs to test this out.
    If it is going on 3 sparks and changing sparks plugs does not help, then there is a problem with the rotor.


  • Ginko
    Ginko Jul 24, 2008

    If you changed a relay
    If it is the injection model, iti is possible that something related to electronic injection is faulty, in this case to diagnose the problem the computer checking electronic injection ECU must be connected to a machine called scanner. You can do this only at a garage.
    My suggestion is , check first all the simple things, replace spark plugs, check that the ingine is not going on three cylinders (you should hear engine making a noise differnt from normal), replace the fuel filter and check and eventually replace air filter.
    Check also that fuel pump is running normally and is not making weird noise.
    Once you do this simple tests you can find out if it is any problem that you can DIY, as bad distribution, fulling problem on pump or filter etc. If this tricks do not work, well then all you can do is take it to a mechanic, probably there is a problem with electronic injection (if it is not a carb model) or electronic controlled distribution.
    If it is a carb model check also that carb is not obstructed.


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