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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for March 8, 2021
International Automotive Technicians' Network (iATN) - Members Only
(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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1999 Honda Civic EX 1.6L MIL Lamp on
Hi all, Working on this 1999 Honda Civic EX with 212,000 miles on it. It has a p0171 code. It has both STFT and LTFT maxed out. STFT only improves under load, and even then only gets to about 20. STFT does not move with no load throughout RPM range. Man... Trouble codes: P0171

Fixes & Summaries for Asian
Fix/Summary Answers
2004 Honda Civic LX 1.7L cooling fan VIN: 1HGEM22524
Thanks to everyone for your help. I replaced the fan switch and the thermostat. My son has been using it and he says that it's ok now. I assume that the switch fixed it but I wanted to also replace the thermostat just for security reasons.
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