after engine warms up ( 30 seconds) check engine light comes on AND idle drops down to 350 rpms at the exact same moment . these conditions remain thoughout the driving trip.
Mazda Q&AAsk Your Question
1994 Mazda B2300 Question: check engine light comes on and stays on ...
Answer #1Superbob March 05, 2011, 15:28Master
The check engine light being on is telling you that the computer has detected a malfunction in the engine/emission control system. When the light's on there are data and diagnositc codes stored which can be accessed using a scanner, and there is history available..
Find a Mazda specialist to scan the computer and find out what's wrong.
Here's a directory link for you: