Anyone know how easy it would be to retrofit cruise control to a 964?

 

I took mine out as I never use it. If you have all the parts it should be pretty straight forward. I would think the toughest part is to reinstall the module at the back, IIRC I had the left side intake manifold off at the time.

 

Don't know about retrofit but my car has it from the factory if ever you need something to copy as a basis to work from. My guess the wiring is already there like for the OBC option.

 

PET parts list
http://www.autoatlanta.com/porsche-p...-94/907-01.php

 

I did it and it is a great licence saver. Make sure the parts you buy are for your year car as the manifolds did change and consequently parts of a cruise control from a '89 will not fit a '91.

The wiring is in place, it is simply a matter of plugging it all in.

And yes, fitting the cc module under the air intake manifold can be difficult but not impossible.
I have some parts left over from my install but I am a long way away. Most bits I found were not hard to come by as it seems more people removed them then retro fitted them back on

 

I did it also and it's pretty straight forward except fitting for the Control motor, as already mentioned. I actually planned to do a DIY some time, I did take some photos during the install just for that.

Anyhow, I removed the complete intake because I wanted to clean it out at the same time, but you could probably do it by just removing the left side.

The most problematic step however is to source all the parts at a reasonable price! You could easily spend £££££'s if you buy all parts from PC or at least everything available from them. I managed to find all "big" parts from breakers (Douglas Valley was one of the sources I used), some of it even dirt cheap, and still spent about £500 in parts.

The Control motor is the same as for almost every other Porsche model from that era so you don't need to source a 964 specific, but the actual brackets and supports to install it are unique, therefore ard to find, and I think also NLA from PC. The control box is general for most models as well but there is a programming plug on it that's 964-specific.

Some parts however are easily bought from PC and quite cheap as well, like the steering column covers and the throttle parts (springs etc.).

So start by collecting all the parts needed, and when you're done with that you can install it in one day if you work effective. The best part with the 964 is that almost everything electric is plug& play

I actually did the OBC as well since I already got the steering column switch when I bought the Cruise Control parts, but there you need to install the outdoor temp sensor wiring to get it fully functional.

BR/Jonas
Lulea, Sweden

 

Thanks Jonas... To be honest sounds more involved and expensive than I was hoping..

 

I was just reading Jonas T post. I have most of the bits for the cruise control including the servo motor the indicator control for the steering wheel etc-i think one of the only parts I do not have is the mounting bracket that fits on the air intake where the cc joins the throttle - I used that on mine.
If you want I will have a look in the spare parts box , do an estimate on shipping-if not in a hurry surface freight is an option and it would be there in about 6 weeks

 

I would appreciate a photo of the throttle body on an early 964 (alloy intakes) fitted with Cruise Control to show how the cable attaches to the existing throttle linkage.

Cheers
Jon

 

Hey guys, anyone is having photo guide or step diagram how to install the retro cruise control of the 964. Thanks