Hi all,
1989 Toyota Corolla SR5, Carbureted 4AF, California emissions, 146k miles, runs great, thanks largely to all the help I've gotten from this newsgroup since buying the car in 1999.Check Engine Light turned on while I was driving (stop and go local driving)-- I pulled the trouble code and it's #25. Runs fine. Engine temp was normal operating temp. Came home. 15 minutes later, for good luck, I sprayed some carb cleaner in the carb. Drove the car around a few miles, the check engine light did not come back on.
Could someone tell me what this code is and what I might want to do next? From what I could find from old posts, it may mean "running lean" and that the next step is to change the O2 sensor? (or can it be cleaned?)
If so, does anyone know if a California car would use the same O2 sensor as a non-California car?
The only other history of relevance, if any:
- gas mileage is normal; passed Emissions fine 5 months/2000 miles ago
- had entire new exhaust system installed last month, including new catalytic converter.
- 5 years/40,000 miles ago, the car was misfiring when cold and had trouble codes #31 and #41. I first changed the Thermo vacuum switching valve, which did not help. Then changed the Throttle position switch, which solved the problem.
- car's now only driven about 4k miles a year, mostly local driving
- it is getting colder quickly here in Boston
Hope it's unlikely that the car needs a new carb, b/c I just put $1100 into it this past year and will go crazy if I need to spend any more on it.
Thanks for any and all advice! John snipped-for-privacy@yahoo.com