Hi, mine is not working, it started to fail intermittently, and has now died. Speedo and odometer not working, tachometer is fine. It appears impossible to get a new one after ringing around. Has anyone tried to repair it? If it failed intermittently, could something basic be done? And if so, is it possible to test without placing it back on the car? Thank you for reading, Paul If anyone has one in stock reading this. please PM me. My car is in MPH.
I belive they are NLA. The later part that was easily adapted to that application, the 355 sender is NLA as well. Several threads about that and efforts to repair or reproduce in the 308 forum.
I think it may be not such a big problem to make new ones? only a coil and you can usde the old housing again. next week I will be at home again after 8 weeks vacation in thailand and have a look at mine. also meassure the resistance and will let you know what I found out.
Try Carlo at Alpha of Tacoma, he was able to get me one for my car as well. This was a few months ago. I tried some others and know avail, but somehow he knows who to call. 253-572-2532. I downloaded an app before I fixed mine that gave me my speed. Was close enough not to get tickets. Good luck.
Thanks to all for your support. I will call in the morning. Eurospares are out. They say Ferrari is NLA. A bit sad considering how many models use this part.
Ferrari 308 328 Testarossa 348 400 F40 412 etc Speedometer Sensor Speedo 116987 | eBay Better Hurry!!
I ordered one from Eurospares last week. Their website says the F- P/N not in stock, but they have a replacement number 393650106. They acknowledged the order and it said "special order", and it should be available in 7-10 days. Guess I'd better follow up. Will keep you posted.
Repair (see page #4 for 116987): http://www.ferrarichat.com/forum/308-328/416720-308-early-speedo-drive-sensor-repair.html Rebuild with a new circuit board: http://www.ferrarichat.com/forum/308-328/464677-need-failed-speed-sensors.html
FWIW, I bought a brand new yellowbox 116987 last May from AWItalian.com... and they're still listed on their website for the same price today. I don't know if they're still available there, but good luck in your search.
Here's an update on my order to Eurospares for PN 116987 speed sensor: They emailed that the PN 116987 is NLA, as is the replacement PN 393650106. They contacted Ferrari and they recommended replacement PN 149095, which only requires removing the connector supplied with it and using the existing one on the car. Hope this helps. P.S. price from Eurospares for the new number is 138.18 pounds plus 44.65 shipping. I've ordered it and will keep you posted on interchangeability.
Are you 100% certain it is the speedometer? Have you tried to verified that you are getting a signal to the unit? I know I had an issue last year where the steering knuckle under the dash caught the wire harness and pulled the wiring out of the plug. I repaired it and it works fine. Intermittent failure can be a loose wire. Just thought I'd mention it before you go through all of the expense and effort to find a new one. I'm sorry but I don't have time today to go through the workshop manual to give you more direction on how to check it but I'd bet some of the others on here can give you a complete detailed response.
Received the replacement speed sensor part number 140905 (see post#12 ). Looks exactly like original except for the connector. I expect to be putting the interior leather parts back in later this week, and getting the wheels reconditioned next week, so should be looking at doing the sensor swap in two weeks.
Alhbln did a beautiful right up and technical summary! My GT4 speedo sensor stopped working - I forgot how I decided to attack the sender and not the speedo. I carefully disassembled the sender and discovered that 1.5 nanofarad cap (Geez that's tiny) had popped. I think I found an identical part in an old box of solid state radio parts, soldered it in, carefully reassembled and sealed it back up, and all is good. This was circa 1987, and it's still working.
Finally got all of the interior parts back from leather reconditioning and they look great. Reassembled and then up on the lift to replace the speed sensor. The replacement part 149095 works great and learned something in the process. The connector had to be changed for the new sensor, and in doing it noticed that the old connector had poor contact and was loose. So the problem was actually the connector. Put the new one on, so I now have a spare. Thanks for all the input.
