Bodywork Freshen up Teardrop Mirrors and bits.

[xenon]

ORIGINAL: sawood12

It's like the modern one-touch electric windows on new cars where you touch the electric window button once and it automatically opens. I've often wondered where that intelligence is on new cars as that is also a feature i'd like on my 944. In thoery if you were a bit of an electronics wiz you could make a device that links between the electric window button and the rest of the mechanism that can do this.

relatively easy with a couple of microswitches and a relay.

 

[George Elliott]

Great enthusiasm for wipers, clearly [] a subject we all care about.

The rear intermittent is not too important to me as I find the Rear window tends to stay clean above a,a,a,certain speed, so monitoring one's wake is not too difficult[] . Unlike a Mk2 Golf. I also agree the Mechanism inside the Wiper Motor is a bit Flintstone in design, and would be better not to be overworked, - like the sunroof, - windows, -glovebox lid, - luggage blind, ......but not like the Crankshaft[].

George

944T
964

 

[zcacogp]

Scott,

It's a good question. I know that VW put a lot of the 'intelligence' in their relays. They have a rather nifty programmable intermittant wipe for the front wipers on their Mk3 golfs, whereby you turned the wipers on for one wipe, then off, and on again when you next wanted them to wipe, and it remembered that interval and wiped with this intermittancy. Clever stuff, and you could 'retrofit' it to earlier golfs by swapping the relay over. I am told that the same relay works in 928's, and therefore I would assume it also works in 944's ... but this is front, and the discussion is about rears. (Having said that I will make sure that I pinch the programmable intermittant front wiper relay from my folk's Mk3 Diesel rustbucket before it goes to the motorway in the sky!)

One-shot windows are a good question. A circuit that kept the windows winding until they were interrupted by another press of the switch (or the end of the travel) would be a 2 minute job to design and build, but fitting it could be messy. If there was - as you say - a relay which has this functionality then it would make a much tidier job if it could be easily fitted. (Are there window winder relays on the 944? I assume so ... maybe this is another thing I need to cannibalise from my folks jalopy ... )


Oli.

 

[Fen]

One touch windows is in the ECUs. I was just programming my RS6 this evening to do stuff like lock the doors at 15km/h, only unock the driver's door on one push of the key fob etc. Everything to do with the locking including whether it flashes the indicators on lock and/or unlock, if it bibs the horn at the same time or not is all controlled by a programmable module. Same goes for all the rest of the car also.

 

[xenon]

What I meant was you could easily make the one-touch work with an (extra) relay and a couple of microswitches.

 

[zcacogp]

Fen,

I suspect that your RS6 is a rather more sophisticated example of how to do it. Earlier models with the one-shot-windows are very unlikely to have a dedicated ECU just for the windows, and therefore the functionality may be more easily appropriated.

(I hadn't actually twigged that it was a pukka, full-fat RS6 you had. Suddenly I am quite impressed. I still have a strong yearning for an RS2 ... maybe as a 944 replacement one day.)


Oli.

 

[Fen]

While you might be correct I believe the only cars I have had with one-shot windows have all been through the ECU. I can't remember if the appliance has one-shot or not as they have stopped working all together just now.

Yes, it's a pukka RS6:

 

[Diver944]

I'm no electronics whizz but could a simple test be done by temporarily wiring the rear wiper to the front wiper wires and setting the fronts to intermittent to see what happens at the back. If that works then you could control both from the one switch.

I keep my rear window Rain-X'd and once you are moving it only takes one swish of the wiper and it pretty much stays clear

 

[hotblack944]

ORIGINAL: sawood12
It's like the modern one-touch electric windows on new cars where you touch the electric window button once and it automatically opens. I've often wondered where that intelligence is on new cars as that is also a feature i'd like on my 944.

Scott,

It's already been done - you can buy the kits:

Click me!

Jim.

 

[poprock]

ORIGINAL: Diver944

I keep my rear window Rain-X'd and once you are moving it only takes one swish of the wiper and it pretty much stays clear

Ditto. In fact, on my Lux I removed the rear wiper completely (fitted a delete bung from Promax) and just rely on airflow and Rain-X combined to keep it clear. Works perfectly, the water just runs away and I can see clearly. Might do the same to my Turbo sometime, as I like the sleeker look of the rear glass without wiper.

 

[Neil Haughey]

ORIGINAL: Fen

While you might be correct I believe the only cars I have had with one-shot windows have all been through the ECU. I can't remember if the appliance has one-shot or not as they have stopped working all together just now.

Yes, it's a pukka RS6:

I am wondering if all these controls on cars like your RS6 are on a Canbus. Everything seems to be going Canbus these days, I was having a play the other day with some Canbus test boards for a totally different type of vehicle, looks like fun playing with these.

 

[xenon]

ORIGINAL: zcacogp

Thanks, keep us all posted.


Oli.

Well I purchased the Vauxhall intermittant rear-wiper relay. On initial inspection I thought that it was not going to work because as well as the anticipated four spade connectors, there is an additional connection, 'half-sized' spade. On opening up the relay I can see that this supplies 12v to a transistorised a-stable with an RC circuit providing the delay. There's no way the relay socket in the 944 will be so-equipped....

Poking around in the fuse box then led me to conclude that there is no relay for the rear wiper in any case and subsequent investigation of the wiring diagram proved that to be the case. The rear-wiper in the 944 (at least on 1989 and on) is fed directly from the switch. I wish I had read that before buying the relay []

Anyone got a Vauxhall with an iffy rear wiper? I can do you a deal on a relay... []

 

[zcacogp]

Ian,

Oh. Hmmm.

Pop goes another great idea.

Sorry to have encouraged you along a futile path!

BUT, now that you have the relay, you could wire it into the circuit and thus use the functionality. I doubt it would be that hard, but would involve cutting the loom.



Oli.

 

[sawood12]

Well the wiper delay kits i've seen in Maplins are only about £6 and just consisted of the printed circuit board and the necessary componentary for you to solder in and it just appeared to be fitted in-line with the rear wiper switch. I guess that all it does is with the variable resistor fully one-way will simply have the wiper operating as normal i.e. non-intermittent and as you wind the resistor back introduces an increasing delay. I was looking to stow the circuit board (which is about the size of a small matchbox) under the stereo and have the variable resistor popping up through one of the blanked off switches in the centre console. It is a fairly simple job but i've been somewhat diverted over the past 12 months with the nipper. I've hardly had chance to wash the car over the past year!!

Jim - that electric window kit looks just the ticket! another job to add to the list that I have little time for at the moment!