Code 25 and 26 - Toyota Nation Forum : Toyota Car and Truck Forums

bellysoldier · 05-17-2011, 11:27 AM

My 89 camry got code 25 and 26 Air-fuel lean and rich malfunction.
I have cleaned MAF, throttle body sensor and IAC valve.
Codes come again after three days.
Any Idea ?

Grego 92 · 05-17-2011, 12:25 PM

You can read my thread, had the same codes you got.

Maybe you will have the same luck, but the manual says it can be a lot of different things. I was able to narrow it down real quick because everything was new already.

EGR Question

bellysoldier · 05-17-2011, 02:37 PM

Yap, I will clean the EGR valve this weekend. I will tell you if it works.

bellysoldier · 05-19-2011, 07:23 PM

Can this kind of EGR valve be cleaned ?

Grego 92 · 05-19-2011, 07:51 PM

I was anxiously waiting for your report so I could learn how to clean it!!!

bellysoldier · 05-23-2011, 06:52 PM

I cleaned the EGR valve and cleared the codes. Id ran the car for two days. The code 25 and 26 seem to go away. I open the AC on hot afternoon today. After I ran 6 miles on freeway. I got to stop at the intersection then the codes come back again. Any Idea ?

Black95Cam · 05-31-2011, 08:59 PM

i replaced the MAF on a friend's car and it got rid of the code(s). its expensive but at least his gas mileage improved and no more check engine light. Lol.

bellysoldier · 05-31-2011, 10:43 PM

The codes are in the memory. The CEL is not on when I start the car. But sometimes the CEL on after I drive the car for one or two hours. Sometime CEL is not on though I drive the car for whole day.
The mileage of this old car is quite good.