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1995 Eclipse GST won't start, I believe I narrowed it down to two things

Posted by jojo17k, Feb 19, 2020

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  1. jojo17k

    jojo17k Probationary Member

    3
    1
    Joined Feb 19, 2020
    Cicero, Illinois
    Basically car has been sitting for years, engine has been rebuilt. I didn't do the rebuild but the injectors are spraying fuel, all 4 plugs are sparking( I checked the order of the plugs and tried various orientations) mechanical timing seems fine, put new fuel in it and still nothing. I've gotten closer to where as before it would crank with nothing happening to now I crank it, it backfires and revs to 500. So I believe it's the water temperature sensors since all 4 are cut and not connected at all. I already messaged a seller for a harness but have yet to hear back. I believe since none are connected its dumping too much fuel into the cylinders and causing it to backfire. I'm thinking it could also be the immobilizer since it seems like it wants to start? Still not 100% sure so I'm asking these forums for a 2nd opinion. Also, the connectors for these water temperature sensors would come with the harness that has the fuse box right?
     
  2. 91talonts1

    91talonts1 Proven Member

    578
    230
    Joined Dec 29, 2008
    Spencer, North Carolina
    Yes without a ECT sensor signal to the ECU it will default to thinking it's -40* and dump a ton of fuel. This will usually result in the car flooding and not starting. The sensors are all on the engine harness, the fuse box harness is separate.
     

    Drag Race Build 3K  15

    1997 Eagle Talon TSi AWD
    awd · manual · 2G DSM
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  3. tk106

    tk106 Supporting Member

    2,511
    863
    Joined Sep 11, 2017
    Cincinnati, Ohio
    95 did not come with an immobilizer from the factory (don’t think any 2g has one). They did have factory security system but I think it’s the kind where the door has to be opened with key or factory keyless entry.
     

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    1992 Eagle Talon TSi AWD
    12.625 @ 111.42 · 1G DSM
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  4. delta448

    delta448 DSM Wiseman

    2,905
    151
    Joined Jan 13, 2006
    Clarksburg, West Virginia

    2K  5

    1998 Eagle Talon TSi AWD
    awd · manual · 2G DSM

    1K  11

    1997 Eagle Talon TSi AWD
    awd · manual · 2G DSM
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  5. motomattx

    motomattx Proven Member

    2,200
    849
    Joined Dec 9, 2010
    wampum, Pennsylvania
    No coolant temp sensor, no start.
     

    Drag Race Build 3K  24

    1995 Mitsubishi Eclipse GST
    fwd · manual · 2G DSM
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  6. DevineAstral

    DevineAstral Probationary Member

    11
    1
    Joined Jan 1, 2020
    Irvona, Pennsylvania
    +1 with what everyone else is saying.
     

    Street Build 129  3

    1997 Mitsubishi Eclipse Spyder GST
    fwd · manual · 2G DSM
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  7. jojo17k

    jojo17k Probationary Member

    3
    1
    Joined Feb 19, 2020
    Cicero, Illinois
    Thanks everyone, that'll be my next step in trying to get this thing started.
     
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  8. jojo17k

    jojo17k Probationary Member

    3
    1
    Joined Feb 19, 2020
    Cicero, Illinois
    What I'm currently going up against. I feel so discouraged looking at this section of the harness, it's so hacked up. My plan initially was to find a new harness but I'm struggling to find one that'll fit. The only option I see online is a 300 dollar engine harness.
     

    Attached Files:

  9. Vegas smith

    Vegas smith Proven Member

    2,995
    1,542
    Joined Dec 2, 2002
    Houston, Texas
    It’s not as bad as it seems. Go to ohmracing.com and order the pigtails you need and either solder or crimp you’re new connections in. The wiring colors for each part are easily searchable.
     

    Street Build 3K  10

    1993 Eagle Talon TSi AWD
    awd · manual · 1G DSM
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  10. tk106

    tk106 Supporting Member

    2,511
    863
    Joined Sep 11, 2017
    Cincinnati, Ohio
    Sometimes it’s best to unplug what needs to be unplugged so you have more space to work.
     

    284  3

    2000 Jeep Cherokee Sport - Classic
    awd · automatic · Misc Vehicles

    283  4

    93 Civic 4 Door -sold-
    fwd · manual · Misc Vehicles

    Street Build 2K  6

    1992 Eagle Talon TSi AWD
    12.625 @ 111.42 · 1G DSM
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