What does running too lean mean? That is the code(45 Honda Civic 96-98) that my ecu is throwing out what does that mean? What could it be? Any help would be appreciated THANX

 

nto enough fuel per parts of air...

 

clogged fuel filter, dying fuel pump, clogged or dead injector(s). Those are the most likely culprits, the first thing you ned to do is check the plugs for signs of lean running and if they all look the same check the fuel pressure. It could also be your 02 sensor dying, which can show up as either rich or lean running, but generally that throws a specific code for the sensor itself.

 

The first thing I check is fuel presure. BTW, If it's a 96 or 97 and has less than 150,000 miles it is covered by the emission extension warranty.

 

What is the emission extension warranty?

 

I believe it says that regardless of manf. warrenty, emissions related devices are covered for 5 years. Some parts are 7 but just a few. If you try it be ready to pay when its not covered. The book says check the vaccum to the map sensor, and fuel regulator. An exhaust leak can also do it.

 

On some 95 and most 96 and 97 Hondas the emission warranty was extended to 150,000 miles or 14 years. There is a service bullitin on it. #98-081.