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P1259 code low pressure in cylinder head
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asked
May 29, 2017
by
Steve
Performed oil flush. Replaced vtec solenoid . Check oil pressure at oil pressure switch, has 15 psi at idle and 70 psi at 3000 rpm. Check the oil pressure at the pressure switch on vtec valve had no oil pressure at idle and 25 to 30 psi at 3000 rpm. These reading were done at hot oil temp. Also when watching the the pressure comes up slow on test gauge. When cold works perfect. When cold outside low 50's it works for along time before it stops working. When watching on scan tool you see it get signal at soleniod, but it's not enough pressure quick enough to get solenoid to work.
Vehicle:
2002 accord 2.3 4cly
honda
p1259
oil
pressure
mechanical
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