1990-964

Does anyone know if there is in fact a default deployment at approx. 72mph. Some posts indicate it will while others declare full manual operation. And if it does have a deploy speed must it be retracted manually?

Opo

Here's the DIY for the 993
http://boman993.com/diy-spoiler-module-mod/

I have done this mod on my 993's and 964's , but on my 90 964 it didn't work, is it different for the 90?

911Jetta

...

911Jetta

Two wires disconnected + some electrical tape = 911 silhouette at less than 76 mph! ...remember to manually lower it at any speed below 76.

thread: spoiler control - switch activated only*
https://rennlist.com/forums/showthre...ferrerid=19642

jack.pe

Guys,

I have removed the motor mechanism and just fixed the spoiler in place.. to save weight. I did not know about the control module but will look at taking that out too. Does anyone know how I stop the warning light going one above 40mph? will taking the spoiler module out do that?

Opo

You just have to disconnect it, there's no need to remove it if you don't want to..

jack.pe

Thanks Opo but I do want to remove it, i guess the weight is marginal but it all adds up!

breljohn

Hi! My C4 is an 89. I don't have the switch for the spoiler but would love this mod.
Any idea as of how to do so?

Thank you and great thread btw

g60pops

you should have a switch in the engine bay/ rear bonnet hinge

breljohn

I do and it works well but:
- I cannot operate it from the cabin (which I would like to do)
- If I lift it manually, it comes down automatically (and I would like it to stay up)

Any suggestion?
thanks

911Jetta

I love being able to manually control my spoiler.... no more aimless up and down around town.

I don't know '89s that well and what differences might exist. Where is the spoiler module located? Also, is there an in-cabin switch?

If it's like my '90, it's under the passenger seat (small grey box).



Open the box and disconnect two pins and you now control the spoiler until you reach 76 mph., then it stays up and you have to manually lower it. It can be manually lowered at any speed below 76.

Opo

89's are the same as 90's , 91 and up you follow the 993 DIY

breljohn

No switch in the cabin for me
I would like to add one though, hence my questions...

Shamus964

Just did this as I'm running my motorized spoiler right now and the spoiler does not come up at all - have to raise and lower manually only. My car is a '91. Anybody else have this result? Year specific behavior?

3DE

Model years 89-90 have a secondary "emergency" spoiler control unit, a black relay looking plug unit on the forward side of the cruise control (blue/silver box) module. This secondary unit raises the spoiler at ~72 mph if the primary has failed to do so already. Because model year 91+ don't have a secondary spoiler control unit, I would guess this is why it becomes manual operation only.