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Join Date: Oct 2005
Location: Salisbury, MD
Posts: 23
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convertible motor problem
Another problem. Like I said again I have a 1988 911 convertible, and I'm trying to replace the convertible top motor. I have a haynes manual but it sucks and and says nothing about any of the problems that I have. Does anyone know of a website or something that can help me out. I cant even find the convertible motor. Thanks.
J.R. |
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10-11-2005, 01:53 PM
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Join Date: Mar 2004
Posts: 669
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Hi J.R
Check rennlist.com 964 forum for convertible top stuffs. Good luck, Andy |
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10-11-2005, 02:05 PM
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Which motor are you referring to? The "lock-down" motor/mechanism in the headliner, or the actual gearbox, which retracts the roof?
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Merv '89 911 Turbo Cab Protomotive MAP ECU, Twin Plugged Heads, GT2-EVO CAMs, 3.3L fully finned P&C's, ARP fasteners, C2T head gaskets, Titanium Retainers, Turbo spec valves, springs & guides, 964 splash valves, GT35R BB turbo, GSF Stainless Headers, Magnaflow Exhaust, Full bay Intercooler, TiAL 46mm w/gate, TiAL 50mm BOV, Apexi AVC-R EBC, SPEC Stage3+ Clutch kit, Crane CDI Ignition 
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10-11-2005, 07:32 PM
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Location: Salisbury, MD
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I have already replaced both of the lockdown motors. I cant figure out anything about theactual folding mechanism.
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10-12-2005, 11:40 AM
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There is a Gearbox Motor in the rear side panel, which is attached to a cable that runs in/along the metal frame towards the headliner.
Maybe your cable has snapped, or your gearbox is stuffed. What's it not doing?
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Merv '89 911 Turbo Cab Protomotive MAP ECU, Twin Plugged Heads, GT2-EVO CAMs, 3.3L fully finned P&C's, ARP fasteners, C2T head gaskets, Titanium Retainers, Turbo spec valves, springs & guides, 964 splash valves, GT35R BB turbo, GSF Stainless Headers, Magnaflow Exhaust, Full bay Intercooler, TiAL 46mm w/gate, TiAL 50mm BOV, Apexi AVC-R EBC, SPEC Stage3+ Clutch kit, Crane CDI Ignition
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10-12-2005, 03:20 PM
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Posts: 14
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cab top motors
actually there are 3 motors that work the top.
two are in the leading edge of the top under the trim, one on the left side and one on the right. those lock the top in place after it is up and unlocks the top for it to go back (down). the other motor is behind the back panel behind the rear seats (behind the carpeted panel) that motor has 2 cables that look like speedometer cables leading to the gear mechanisms one on each side of the car behind the panel where the rear speakers are... There is so much going on to get that top up and down correctly. Ask me how I know. By the way if you break those drive cables from the motor to the gearbox they can be fixed without buying new ones sometimes. If you need help fixing the top or aligning it let me know. |
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10-19-2005, 09:21 AM
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Thanks soo much. I'll let you know if I need anything else. I just ordered a bunch of parts, which should fix all my problems, but if they dont I'll repost.
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10-19-2005, 11:02 AM
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Location: Lac La Biche, Alberta, Canada
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This description may help.
 Tim
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1986 911 Cab 2008 Audi A6 |
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10-19-2005, 11:25 AM
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Alright I have now replaced every electrical component to the convertible top, and checked all the cables and gears, and even checked all the wiring, and the thing still wont work. Any other suggestions? This thing is really starting to frustrate me!
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12-11-2005, 06:18 PM
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What's it not doing?
Are the lockdown motors in the headliner un-latching? Can you hear the rear gearbox motors winding?
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Merv '89 911 Turbo Cab Protomotive MAP ECU, Twin Plugged Heads, GT2-EVO CAMs, 3.3L fully finned P&C's, ARP fasteners, C2T head gaskets, Titanium Retainers, Turbo spec valves, springs & guides, 964 splash valves, GT35R BB turbo, GSF Stainless Headers, Magnaflow Exhaust, Full bay Intercooler, TiAL 46mm w/gate, TiAL 50mm BOV, Apexi AVC-R EBC, SPEC Stage3+ Clutch kit, Crane CDI Ignition
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12-11-2005, 06:32 PM
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Location: Salisbury, MD
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Its not doing anything. The lock down motors are released and have been for like 3 months. but the rear motor isnt doing anything either. The only thing i hear is the control unit clicking when i hit the button.
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12-11-2005, 06:35 PM
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Location: Near St. Louis
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One thing you might check is the top microswitch on the folding top transmission (gearbox). It should be adjusted to an open position. If the top microswitch is closed nothing will work. It never comes into play during normal operation.
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1991 C2 Cabriolet Tip, 1994 Speedster |
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12-12-2005, 03:46 AM
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Also, you said the top lockdown motors are released. If the top is up. They need to be in the locked position for the top to operate. All these motors are signaling the control box and have to be in synch. for the top to work.
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1991 C2 Cabriolet Tip, 1994 Speedster |
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12-12-2005, 03:48 AM
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Location: Kerrville, Texas
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One more reason to convert (no pun intended) to a targa! No motors to contend with, just as much open air, and same leaks. Just kidding.
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1987 911 Guards Red Targa, nearing 200,000 miles, lowered, 7's & 8's, 964 grind cams from John Dougherty, A.P.E. Mass Flow Sensor with chip to match, cat bypass, strut brace, dual out muffler. Will consider newer model in 8 years when I turn 75 and then maybe not. 2012 BMW 528i (wife's) 2007 Toyota FJ (rain and off road days) |
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12-12-2005, 05:06 AM
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