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Help with my ECU

kindawg

Member
Joined
Dec 22, 2011
Messages
8
Location
Hazleton, PA
Heres the quick story, so my friend bought a galant vr4 like 2 years ago or so, He drove it home one night and went to drive it in the morning, and it would not start. He thought it was the fuel pump, and never got it running. It sat for over 1 year. He got low onc ash and sold it to me. I towed it to my house. Plugged a 1g ecu in it that I got from a friend and it started right up.

Now when I give the car any gas, it stalls out. I'm not sure if the gas is bad or it has something to do with the ECU. Here is why I think its the ECU. The ecu that went bad, had a keydiver chip in it. Now im not sure what that keydiver chip contains. my thought is bigger injectors, and when it step on the gas the car stalls out because it dumps to much fuel. Here are some photos of the ECU's. If u guys can tell me whats going on with the one that went bad I'd appreciate it. It has alot more going on inside than the one I swapped it for, it has a telephone cable hanging out of it, its socketed and chipped, and has just more crap in it. can u guys please evaluate it and tell me what I have.

The first 4 pics are of the BAD ecu that came out of the car,

The 5th pic is the ECU which i put in, and the car started, and idles









 

Brunoboy

Well-known member
Joined
Apr 25, 2008
Messages
2,880
Location
San Bruno,CA Home of SFO
I think the phone cord was back thens way of logging / tuning, I'd check caps and traces for burn marks and such.
 

Terry Posten

Well-known member
Joined
Dec 16, 2003
Messages
9,009
Location
Davenport, Iowa USA
You installed a non-EPROM ECU.

If you get an EPROM ECU, just pop in the old Keydiver chip and it should run as it did before the original issue.
 

Xcelerate

Active member
Joined
Jun 17, 2011
Messages
43
Location
North jersey
I would clear up the fuel first, replaced the fuel filter then try it with the new ecu. Sounds like a bad ecu from the beggining,, but now that you replaced it, you have other problem that filled up while the car has been sitting. Def clear the fuel system. Make sure ur running the stock injectors, make sure you have no leak in the intercooler, and make sure you coolant temp is plugged in and all the wires are tight. That should get you going
 

GVR-4

Well-known member
Joined
Apr 22, 2002
Messages
2,610
Location
Asheville, NC USA
And hopefully you didn't literally tow it to your house, but rather had it brought on a flatbed?
 

+1 on checking your fuel, if you got it to start obviously the problem was computer related does it idle correctly?
 
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