Bill Ball

It appears these questions were not answered.

When only one mirror is affected in one direction, the likeliest cause is a broken wire in the wire harness from the switch to that mirror. I had this happen in my car. A wire was broken inside the insulation at a flex point inside the door. The harness goes through a large plastic tube and sheath near the door hinge. I removed the door panel and was lucky enough to find the wire break at a kink in the harness. Cutting open the black sheath at the kink I found the culprit wire break. Study the wiring diagrams and you will find the power and ground wires for that mirror side and direction. Mine was broken inside the insulation and I was lucky enough to find the break by cutting open the insulation.



There can be multiple reasons why the brakes squeak and squeal.
- hard pads or glazed pads
- no anti-squeak coating or vibration dampers
- corroded pads guides
- rotor material

The factory installs anti-squeak vibration dampers on the backs of the pads. These are kind of a nuisance to deal with, so they are often not renewed when pads are replaced. I'm not sure that's a bad thing. I left them off my car almost 10 years ago, and my brakes rarely if ever squeak or squeal. Instead I put a coat of copper anti-seize on the backs of the pads only where they contact the pistons and along the edge of the backplate where they contact the guides.

Also, the pads may be glazed. Remove them. Place a piece of coarse sandpaper on the floor or tabletop and sand the pad face to remove the glaze. Also, I usually chamfer or bevel the leading edge of the pads.

Anyway, have a look at the pads and clean up any corrosion in the calipers. Try some different pads. The stock Porsche pads are OK, although they dust a lot. I like Axxis Metalmasters. Everybody has their own preference.

If the rotors are grooved and uneven, replace them. Also the wear limit on the rotors is only 2mm from original thickness. So, if I see a lip on outer edge of the rotor (where the pad does not contact the rotor) of more than 1mm on each side, I replace them.

siscogts

I stronlgy believe I will find a cut wire somewhere , now. Thank You.
Rear pads are new, but it seems the car has been washed and put in the garage soon after, so discs and pads are very rusty......I think that some rust went on pads surface, causing this squeal.....
Francesco

siscogts

yesterday I re atteched the control unit and final stage unit, I opened them checking for something burnt or evidence of fault , and then I closed them,There was nothing bad after an extensive check with a multimeter, I also checked the chips on the units using datasheet I found on the net....Nothing seems wrong.
I forgot, as I told you to check the gas pressur sensor of aircon, so I unbolted the 2 wires.
I started the car and fans don't run.Finally!
I started a/C , slided selectors in avery position, The compressor goes on and of as the manual says,but fans won't run even with A/C on and pressure sensor wirinsg back in place.... in my garage temperature was 15°C , the hammer said coolant temp was 18°C , and so the air intake...I believe I have to warm up the car to normal temperature and try if they run again...
And I have to check fuse 28-29, I have to find procedure to get at the Fuse box as it's first time I have to look at it.

My Woofer were pretty gone, I was ready to order new foam for them, yesterday night I wanted to remove grill.....I was turning it anticlockwise and magically the stopped making "burps" at every bass frequence peak.
My woofer fixed itself!
I don't believe in this, so I will order foam or try to find better woofer, even if I will struggle to find 2 OHMs units to replace the original.....
Regards,
Francesco

PS: found the broken wire on the door, Bill ball you saved me a lot time!Thank You!!!!!!!!!!!!!!

Bill Ball

That was quick! Glad to hear it.

siscogts

Another question for my "928 expert and friends":
engine support:Are anchor 2698 hydraulic mounts so good as I read almost everywhere?
I was told they worth more (for their cost) than original(and expensive) ones(talking about value for money).....
Do you know where I can buy at the cheapest price?because usually the parts from US to Europe make me spend a lot of money for the toll ....
Thank you!
Francesco

928cs

I bet your car is wp0zzz92zns800653, right?

siscogts

I think you know this car really well!
Yep, it was olivier's car.
Francesco

PS: don't tell me your car is a real CS......wow.......

928cs

Olivier is a member of my Porsche 928 Club.

My ex-car is a 1989 CS, number 2 of 7 build.
It now belongs to my ex-wife.

siscogts

your ex wife is really lucky....

excellent car.

Anyway : I send you a private message...
Francesco

siscogts

message sent

Bill Ball

My recollection is that there were a lot of problems with the Anchor mounts reported here. Often they did not have the hydraulic fluid or you might get a solid mount by mistake. Although some have had good results with them, it appears these quality control issues became common at one point. So, there was a shift over to one of the mounts for a Volvo. Roger at 928srus.com sells them in the States and I've not heard any reports of issues with them. Check with him or some of your 928 friends in Europe.

jeff spahn

I second the motion on the Anchor mounts. had them in car for 6 months. Took them out and put the Volvo mounts from Roger in. The volvo mounts are the way to go.

siscogts

found cheap Volvo mounts and discovered they come from 740-760 Turbo models.
I think I will take them with 85 Euro.
Thank YOU!
Francesco

Bill Ball

Those might be the ones Roger sells. I believe the hardware is slightly different from stock, so you will probably need different nuts and washers. Make sure they are included or you have another source for those parts if needed. Also, compare the the stud length with your stock mounts. They may be longer, and at least the bottom one should be trimmed to stock length or it will make intermittent contact with the steering rack causing loud noises when accelerating hard. The Volvo mount studs may be OK, but the Anchor mount studs were definitely too long and caused a problem if not trimmed.

siscogts

Really good suggestions!
Thank YOU!
Francesco