ecu codes... bad ecu?

[Blazin674]

i have been swapping an ae111 blacktop into a 1994 geo prizm and ive been having trouble getting it to run right. the problem starts when i give it any kind of throttle, the timing retards instead of advancing. so i jumped th TE1 and E1 on the dlc and came up with a few codes i got a 12, 21, 22, 24, 31, and 41, so i started testing each sensor by following the test proceedures in the black top repair manual, and all the connections checked out fine, i was ondering if it really is my ecu and if someone has had any similar problems.

[toyomoho]

First find out what the codes mean and if they apply to your car or engine. Does the new motor have the same type of timing/coil/ignitor setup as the old one?

[Blazin674]

i know what they all mean it was a full black top swap and i have rechecked the wiring multipul times

[toyomoho]

Is there a model number for this engine? Was it offered as a option, etc on this car? The sensors from the new engine my be differant from the old engine and as a result the ECU is confused.

[Nitesky369]

ALOT of corollas have BAD ECU's that just DIE for no reason.. my car is brand new has not even 15k on and and the ECU just shit out one day when i was driving.... you should see if thats the problem. chances are it is

[punter]

Sounds like a big wiring problem to me.

I've had 2 20v ECU's fail and they just won't give codes and also won't idle or rev above 5000 after they've failed. Still operate normally in all other aspects.

I'd double check you wiring.

20v ECU repair guides

Silvertop
http://www.toymods.net/forums/showthread.php?t=27814

Blacktop
http://www.my-acoustic.com/Car/ECU/2...AP_problem.htm

[Pineapple]

First check all you grounds.

[Blazin674]

thanks guy i checked all the ground they are all set, i got the codes to go away but the thing retards the tiiming now instead of advancing it. now i dont have any codes.

[Blazin674]

ok car is for sale in the for sale section $1700 with extra parts