Quote:
Originally Posted by jt20
pull vacuum on the line to the trans modulator (the only vac line to the trans) - it should hold vacuum pretty steady.
tee a vacuum gauge into the the line that runs to the trans and test drive
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Performed this test yesterday, there's a leak somewhere either in the line to the trans modulator or at the modulator itself. I remember reading in the notes from the service history there was a comment about a small leak at the trans modulator at that time but the service tech deduced that it wasn't enough to cause shift problems. That was some time ago, I think it's more likely to need a new modulator now.
I have to put the car up to locate a VCV bolt that got away from me so I'll test the modulator independent of the line and see what I get. It would be nice to find the line or a hose coupler to be at fault but I'm not optimistic.
Thanks John
Steve A