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Old 04-24-2013   #1
1999Gst
 

Join Date: Jan 2011
Location: St.Paul
Drives: 1999 Eclipse,
Posts: 304
power Transistor Issues

1995 eclipse gst, 99 ecu, 99 motor, 1g cas. It's funky but works
Evo 560cc injector's walbro 255, other little mods


Okay, so the car was running perfect for a week or so after I sold my eprom ecu and Installed the black top ecu, Then was driving this past weekend and car gets a very bad misfire and stalls on way home. Checked spark, fuel, and compression and its all good. The car starts and idles for 5-10 secs then pops and dies and I can smell gas. The power transistor gets burning hot and if i keep trying to turn it over, it wont start after the transistor heats up. If i wait 20 mins and let the transistor cool down it will start and die.

Checked all grounds and connections they seem fine. Only thing I'm thinking is either bad ecu or a short in my wiring somewhere? My boost gauge does go to the 0 mark so maybe a short in my ecu?

I'm lost and thinking of just going through all my wires nothing else i can think of. Any help ? Thanks
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Old 04-27-2013   #2
1999Gst
 

Join Date: Jan 2011
Location: St.Paul
Drives: 1999 Eclipse,
Posts: 304
Re: power Transistor Issues

Replaced coil pack, power transistor and cas. Starts and idles for 30 sec then stalls , If I have the key on the power transistor sparks when I ground it , but I've replaced everything but the ecu. Any ideas ?

Last edited by 1999Gst; 04-27-2013 at 06:01 PM..
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