Dealership service dept told me a code 71 could possibly be a dirty egr vacuum modulator filter. I made a homemade filter (as described above), cleared the codes, and the code 71 has not come back (knock on wood).
SF,
Jungle
Intermit. check eng light over the past few weeks. Ran diagnostics today. Had code 25 (air/fuel mixture lean). Couldn't find anything here when I searched. Anyone ever had this? Bad O2 sensors? Thanks.
Jeff
Needed tires for my LS. I researched on tirerack and on this site. Decided on the Toyo Proxes TPT (205 65 15 / 94V). Put them on yesterday. So far so good. Smooth and quiet. Good luck.
Michael,
My dealership wanted 1100$ for a new sensor + labor. I found a used one for 225$ on-line and did it myself.
ECU tec parts
877-312-8832, sales@ecutecparts.com www.ecutecparts.com
Good luck.
I had your symptoms last week on my 92 and had a 31 code. Replaced the Airflow meter and she's back to normal. Not sure how your other codes are related.
FYI. ECU tec parts out of Orlando was helpful in finding my part. Worth trying them if you need any electronic components. 1-877-312-8832.
Thanks to all that provided info to me.
Just came back from the dealership. Popped code 31. Airflow sensor (meter) is apparently bad. 1100$ for the part. Checking some salvage yards ASAP. Anyone else have any insight or advice?