When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Thanks for your help. I'll get the front sensor that was proven to work, and will try to make it work.
Originally Posted by KenRudd
Okay, finally got around to installing testing the rears. It's a bad news/ more bad news scenario. If you recall, I am testing "Anti-Lock Brake Wheel Speed Sensor Oem Fit Rear Volvo ABS264" for the rears, which look like this compared to OE rears:
First bad news, which was kind of minor, was that I had to Dremel out the mounting hole to allow the mounting screw to align with its hole in the hub:
If anyone needs a set of early front or rear sensor's PM me. I upgraded my 928 to S4 suspension front and rear. The ABS worked perfectly before the upgrade.
If anyone needs a set of early front or rear sensor's PM me. I upgraded my 928 to S4 suspension front and rear. The ABS worked perfectly before the upgrade.
I could use the set as a template to build new ones for the fronts.
Bump....any news on rear sensors? My fronts I put on (see earlier posts ) in this thread are still running perfect but I know it's only a matter of time before the rear ones need attention...
The sensor that looks like it may have the best chance of fitting is off a mid-80's Mercedes 380SL. Problem is that, while I might pay the price if it actually worked, they are WAY too expensive for me to hack up as test subjects that may not work. Seem to go for between $300 and $450 each.
Airtex 5S11004 , or WELLS SU12457
Does not look feasible as they are NLA - any other ideas Ken??
__________________
Does it have the "Do It Yourself" manual transmission, or the superior "Fully Equipped by Porsche" Automatic Transmission? George Layton March 2014
928 Owners are ".....a secret sect of quietly assured Porsche pragmatists who in near anonymity appreciate the prodigious, easy going prowess of the 928."
I removed an ABS sensor from the rear of my 85 S2 today as I am refurbishing the hub and it needs to go in the oven. Unfortunatly the plastic housing is rather brittle and snapped in the process. As these ar NLA does anyone know if this is repairable as the main body of the sensor appears intact? Thanks
Some progress. I spoke with Roger late last week and he brought up some good points and had some ideas that needed testing. Apparently, he had spoken to Bosch directly, and while they did not have a viable solution, it got his gears going.
Data Points:
- The front sensor is very similar to the rear sensor in all dimensions, except the front sensor has longer probe that is designed to lay "across" the ABS ring teeth, as it is inserted from the side. The rear sensor comes in from the top, so has a much shorter tip.
- While the front OE sensor is also NLA, it _might_ be possible to build a spacer/adapter that allows the "new" front solution to also work in the rear, since the new solution is very close in dimension to the OE solution ( obviously)
- The big question is whether once in place, would this generate a usable pulse from the moving magnetic field at the tip, instead of along the edge where it had been designed to do so.
So, I took one of my old front sensors ( #PartsHoarder) and ground a tip on it ( In the past I was VERY hesitant to try to modify the tips, because the part was unobtanium, but now I care less):
Then did some careful measurement, and JB Welded a stack of 3/4" washers together to make a spacer:
Put it in place:
And, with this very crude mock-up, was able to generate what appears to be a reasonable sensor pulse by spinning the hub by hand.
So this strongly demonstrated that with a little cleverness, the fronts _might_ be usable in the rear.
But wait, there's more. ( and yes, I know my parking brake is shot)
Well done and thank you for your efforts. I read through the thread and, having tried unsuccessfully to track down down a rear sensor in Europe I came to the same conclusion i.e if the Volvo one works on the front can it be made to fit the back, so was planning in experimenting although not for a while as I am completely rebuilding the rear axle. Incidently I also wrote to Bosch and got a similar reply today (note the spelling errors are not mine!)
__________________________________________________________
Hello,
Thank you for your email.
Part number 0 265 001 053 (Porsche sensor) has been discounted, no repair possible or spare parts available and no longer available in the Bosch aftermarket. Please contact your vehicle manufacture for a replacement or an equivalent.
Best regards
Zain
Robert Bosch UK Holdings Ltd
Broadwater Park
North Orbital Road
Denham, Uxbridge
UB8 9UX
09-17-2018, 08:22 AM
George Layton March 2014
