I've just recently had the pressure checked MECHANICALLY by two different garages. The first said things were OK in spite of the low gauge reading. The second mechanic said he used two different gauges to ensure reproducibility of the readings, which were taken at three different engine speeds. Reading from the second and more particular mechanic are as follows:
1000rpm--04psi (06psi expected)
2000rpm--14psi (18psi expected
4000rpm--22psi (24psi expected)
Signal from oil pressure sender to computer said OK. 2nd mechanic suggested flushing the engine in conjunction with an oil change in hope that it might dislodge suspected crud blocking the proper circulation of oil. It didn't help. He doesn't do major engine overhauls, and discouraged me from opening the engine just yet. I'm a bit nervous, but not enough to have stopped driving this van.
have the same problem?
Thursday, December 2nd, 2010 AT 2:58 AM