4g61t.org

I noticed on my mirage The anti lag launch control started acting up. It used to hold the rpm to 4500 and build around 10 lbs of boost. But then it started reving past 4500 like there was no rev limiter. Then the other day it started cutting out under boost and the check engine light would come on. It felt like fuel cut But I know it wasn't because I'm running a 2 g mas and dsm link. Ok now to the worst part. I went to fill it up with e85 yesterday and it ran fine except above 10 psi so I was just cruising. I filled up and was leaving the gas station and it just died. I pushed it around the corner and tried a couple more times and it fired up and I made it home. I go out to start it today and It cranks and cranks but doesn't fire up. I hooked my cable and laptop up to try and figure it out and ecmlink wont connect any more. I put the old known good ecu in and it still wouldn't start. All my fuses are good and the check engine light dosnt come on when you turn the key on any more. This tells me the ecu isnt seeing power any more. What should I check first? Thanks in advance for the help Guys

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1992 Galant VR4 #680/1000 A few mods

Sounds like your main relay has crapped out, the click you used to hear a few seconds after you turn off the key is probly not there anymore

Yea Ill try replacing the mpi relay and see if it works

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1992 Galant VR4 #680/1000 A few mods

Mpi relay or fuel pump....

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Str8fuct......
11.6 @ 122mph bone stock 4g61t with a 16g brah...

I believe its the mpi relay because the ecu or fuel pump is not getting power and the fuel pump is a brand new walbro 255hp hotwired. Will an autozone relay work or do i need a genuine mitsu relay?

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1992 Galant VR4 #680/1000 A few mods

MPI relay, Mitsu.

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89 Mirage Billet 20g 63t 12.4@120 417whp 400wtq @ English Racing.
89 Colt GT E316g
06 Silverado SS
07 ZX6R

I replaced the mpi relay and that didnt help So I deciced to mess with the grounds. I wiggles the one on the fire wall and it started up. So I figured I would clean all the grounds, so I did now it wont start again no power to the ecu again. This car is pissing me off!

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1992 Galant VR4 #680/1000 A few mods

I wouldn't be surprised if you had 2 bad ecus on your hands.

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89 Mirage Billet 20g 63t 12.4@120 417whp 400wtq @ English Racing.
89 Colt GT E316g
06 Silverado SS
07 ZX6R

The ecu's are fine. The non eprom my backup ecu is brand new.

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1992 Galant VR4 #680/1000 A few mods

Have you tested voltage at the ecu? Have you checked the battery leads for any signs of corosion? I had a bad ground that did that to me caused a no start issue. Also a bad maf will cause a no start issue...

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Str8fuct......
11.6 @ 122mph bone stock 4g61t with a 16g brah...

I have not tested power at the ecu yet. I am assuming because the check engine light does not come on and dsmlink will not connect any more that the ecu is no seeing power. Could a bad mas or adapter plug cause no power to the ecu?

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1992 Galant VR4 #680/1000 A few mods

Problem solved! I redid the power wires going to the battery and it runs good now

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1992 Galant VR4 #680/1000 A few mods

hahhha, Its nice when its something super simple like that!!

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-1989 Colt GT (stock for now)
-1993 Dodge colt 4g63 swap
-1992 Mitsubishi Lancer Evo GSR (genuine)
-1992 Eagle Summit AWD 4g63t swap (SOLD)