this is two weekends old at this point, but the original oil pan on my 1999 Honda Accord commuter was leaking near the timing belt gasket for God knows how long before I got the car. the undercarriage was disgusting. I degreased and pressure washed everything. Spent a lot of time cleaning up the mating surfaces and remade the gasket with black RTV. Good as new.
I've also been getting the dreaded and infamous P1259 code for malfunctioning VTEC engagement since acquiring the car in early May. I don't care how well someone says they maintain a vehicle, even if they
are the first owner. This car was puttered around Albuquerque and not driven like it ought to be. When I got it, the oil was low and filthy so I tried a few cycles with a high quality filter and some seafoam in the crankcase thinking it might be the VTEC solenoid filter mesh gunked up. No joy. I pulled off the VTEC pressure sensor and it bench tested fine for resistance. The code kept throwing so I pulled off the whole solenoid housing and cleaned everything including the EGR valve for good measure. What a pain in the ass to get back there.
After that, I could finally trigger the code consistently on cruise control at 2500 rpm right where VTEC just becomes active. Before it was all over the place including under hard acceleration. That told me the pressure sensor was marginal in detecting a change under slight acceleration even though on the bench it had good resistance numbers. It is a 26-year-old sensor after all. I bought a whole solenoid housing and swapped out the sensor and it's all good to go. Also replaced the spark plugs with some Bosch Platinums.
I've been getting 30 miles per gallon over 2000 miles calculated at the pump driving to Los Alamos and back.
Don't trust a Harbor Freight torque wrench or you'll be like me wasting time cutting new threads on old exhaust studs.
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