Hi guys,
I'm having a resh of problems with a "mostly webshop assembled #1973" board.
The wiki link is below, I'll keep it short here.
Initial Problems:
1) Fuel pump relay output primes OK, but won't pull the relay when the engine cranks
2) Tachometer goes nuts, randomly jumps to 4000+ rpm at idle
3) LCD starts up fine then turns to scrambled jibberish after 30 sec - 5 minutes
4) Most important, after driving several hours, the FET for "Injector A" output failed.
Then, when I fixed the ecu (changed wiring to "INJ F"), the ecu now cuts-out at medium-high boost (220+ kpa absolute) and the car stumbles badly.
- I'm wondering, could any of these symptoms be related, and/or point to a cause??
- I did have to take the ecu apart like 5 times in one day to fix things, maybe static? But why all the issues in the first place?
- Flyback and Grounds check out fine before and after ecu problem, visual check and resistance .1 to .3 Ohm.
Wiki Page:
http://www.vems.hu/wiki/index.php?page=MembersPage%2FKevinBlack%2FAudiAEBAny input is very much appreciated as always.