Mine is Corolla SE Saloon auto. 1993.
I doubt came with genuine 4E-FE.
Previous owner replaced it with 5A-FE (may be).
Now the ACU is 5A-FE, and the engine is 4A-FE (16 Volvo 1.5)
The problem arrived after I put engine from pindi.
Error code 42.
Speedometer and trip works fine. Never shows problem.
If I drive it on soft panel, (non aggressive) it works fine.
But when I run on heavy feet (driver speaking ) each gear shift is above 3500 rpm approx. and check engine light is comes every time I run heavy. It shows up on 3rd gear and above (auto transmission, so 3rd gear is not must).
I have checked error code many times and it is 42.
Replaced speed sensor in gear with a qabli, same looking piece. But again light shown up on test drive. (Then I returned the sensor and put back my own)
The question is, if gear shifts are good and speedometer is good, where is the problem even I replaced VSS.
Is there any compatibility issue with 5a's ACU with 4a's VSS?
Is there a problem in wiring?
How can I debug it? Please help
Sent from my iPhone using PW Forums