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Originally Posted by gezpacho
how difficult is a rebuild of the vaccum pump? also how expensive? i will replace the modulator, but the doors might have leaks? do i have to remove the panelling on my doors? is there a line that i could just plug to get rid of the vaccume to the locks totally or will they just not function at all then. the vaccum pump is situated on the front of the engine right? could you explain what it looks like and the best way to get it out? sorry for all the qusetions that you've probably heard a millilon times before but i'm sooooo nooob. thank you once again.
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IMHO, you want to do a little troubleshooting before you start replacing things. The vacuum pump is located on the front of the engine, left side. There is a large vacuum line from the pump to the brake booster on the fire wall. The other (small) vacuum lines branch off this main line.
First, do the power brakes seem to be working correctly? If so, the vacuum pump is probably OK. If the vacuum pump seems to be working, find the small branch connections from the large vacuum line. One of those lines goes to the engine components, the other splits into several lines and goes through the fire wall. Try plugging the branch connection that goes through the fire wall (to the door locks and the fuel shutoff valve). Try driving the car and see if the tranny shifts normally. Let us know what you find.