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1G Help kind of stumped very hard cold starts than frying ECU's back to back

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moboostin

Probationary Member
18
2
Feb 3, 2018
LA, California
hey guys hoping maybe I can get some insight.. got a 92 talon awd turbo 6 bolt motor minor bolt ons big16g 2g maf full exhaust & 550cc injectors. Thing doesn't start on its own unless I spray starter fluid.. I fixed most of the boost leaks changed the maf still no change. might start up once after 20 cranks if I catch the revs till it warms up. long story short I took my ecu out to look inside to see maybe if something was off from the starting issue nothing seemed burnt? so I put it back than it started smoking and drivers IC106-108 fried. I had another ecu laying around so I swapped in but this ecu also started smoking and the same drivers got fried. The car starts up on its a lot better with this ecu but still after a few cranks if im lucky. I don't know if there is a short or if a wire popped out the harness for the ecu causing it to keep frying? I also try to unplug the maf but nothing really happens besides a slight rise in the idle.. It does not have dsm link its got an safc I bought the car like this.. first the no start and now 2 ecu got burnt.. once it runs it idles fine and I can rev it no problem got 14+ volts from the alternator
 
Figured i’d update everyone, i replaced the coolant temp sensor wires at the sensor they were a bit brittle and threw the 450s in there so far she starts up aboht 20 times back to back while fully warmed. I think she’s good now i haven’t repacked the iac yet or repacked the ecu with the burnt drivers but she starts up still so i guess once i get those replaced she should be 100%
Glad to hear that :thumb:
 
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