Quote:
Originally Posted by The Gears
Thanks Brian.
You say your SD is at 8Hg. I guess if the Vacuum -pressure is in balance with the Modular pressure all will be OK. Finding that balance is the trick.
Can the Modulator be serviced or just replaced.
Also I am considering scrapping the Vacuum pump and installing a
12 volt rotary vane pump from a Volvo. Do you have any thoughts on this.
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It all depends on the shift performance. When you replace the modulator, and it's working properly, the shifts will be way too soft and you'll need to make an adjustment to reduce the vacuum.
The modulator is about $30. I'm not aware of anyone servicing them.
I'm not a fan of deviating from the OE equipment unless an alternative can be proven to offer additional durability. Since your vane pump is an unknown and the OE vacuum pump is good for 250K, I'm not understanding the desire to make the change.