Hello all,
Synopsis: Newly synchronized transmissions after 2 years disassembled & non operational. Tried to sync today. Top goes down but not up, problem apprears to be electrical, motor will not reverse with all the tie-rods etc. disconected (99', 5 spd, 2.5L) Originally I had issues with re-synchronizing my transmissions (type "A"). Synchronized them individually by aligning "V" arms to notches on the trans. Case. Whille not working quite corectly, the solution is at hand (i sycncronized the "V" arms beatifully...180 degrees off.)
Now the big pain, the top will open but won't close. With tie rods and the like disconnected from the transmission, the motor will only turn in one direction (open). Pushing the closed button does nothing.
1) took out the big relay, opened it up, little circuit board inside (surprise), cleaned of a little surface corrosion, cleaned contacts on plug, Gave it some fairly hearty taps, and drove it in and out of its socket several times.
2) Did the same with plugs on the up/down (or close/open) switch. Also swapped in 2 other switches, & jumped the plug, still no go.
3) Fiddled with the switch positions of the b-pillar micro switch and the switch, nothing.
4) WERDNESS: pushing the "close/up" button while holding the switch over the drive motor down makes the drive motor run in the wrong direction (like when opening the top) but it does run????
5) Probably irrelevant but an apparent, remote control button for top on my key does nothing. ( Other button works with locks though)
6) NOTE OF HOPE AND CONFUSION: I found by tapping the up/close button the drive motor would turn in the wrong direction in little fits and spurts. It also on rare ocasions runs for 4 seconds or so
7)I can hear a "click" definitely from the relay when swithch is pushed either "open or " close".
8) More weirdnes: Stabing arond blindly at the 4 wires that lead to the motor, I found a pair the lit up 12v. on my v. meter by pushing the open but ...and... the close button ! (later discovered these are the only 2 leads of 4 that go to the motor. the other 2 go to the micro switch above it)
9)Nrew wrinkle today: removed drive motor and jumped it runs great on 12v., swithch polarity runs to reverse it. did, as I'd expect. But hecked voktage off the plug for motor. +12v with the switch in either up or down positions, no -12 reading????
So, an obvious solution for the "gear run-out" is rotate the gear to "v" arm 180 and realign it to the cover notches (the later orientation). May also install and adjust top tie-rods with the top in more of a complete "closed/up" position. Are "v" arms supposed to be perfectly flat? or is a littl bent in them O.K
As to the up/close situation, weird circuit board relay sounds like a candidate, but I bet Porsche doesn't give them away, a pricey experiment. It also makes the right noise and I have nocked the thing around a bit (works for som here). If there's a work around I'd love to hear about it. If eliminating added complexity due to handbrake and speed overrides helps, I'm ready to say ba-bye to them .
I have factory wiring diagrams, but there a bit confusing. Write now I could mickey mouse the thing to work, but not with the sophistication it's supose to have. I also found a PDF here describing how to test the micro switches through the top relay socket. Does anyone know where I can measure other voltagess I can check to Isolate the problem?
Other tips, clues, insight greatly apreciated!!
thanks, P.K.
P.S.This the continuation/ branch of a thread started between "mark in sunnyvale" a "1schoir" (http://www.renntech.org/forums/index.php?showtopic=15249&st=0&p=75978entry75978 ).if you want backround .