Speedometer failed

Call to FerrParts in Califormia.

 

Also Superformance in the UK. Be advised the wires on the new senders can be reversed in the connector. For my 82, my new sender wires were reversed as to what they should be for the sender to work. Sender brown wire is the 12V in and should mate to car harness green....sender yellow wire is the signal and mates to car harness red/black.

Best Regards,
John M

 

Just did mine... T. Rutlands for $225 (eBay Store) and the wires needed to be reversed. Easy fix once you have the part in hand. Good luck!

 

Those speedo senders have helped keep so many low milage vehicles available.

 

call palo alto speedometers

 

Since WAY back in the 80's...



NEVER NEVER NEVER NEVER NEVER NEVER believe the indicated milage on a 308. NEVER.

This is rule number 2 of the 308 rules.

 

I know it is a lot but you may want to think about buying two since they are so difficult to find. You can ALWAYS sell it later.

 

Are all the sending units the same on the 2V injected cars?

 

+1 on watching the wires.

I ordered one from superformance last year, it didnt work so assumed speedo was faulty after checking everything else.

Stripped out the dash (dont ask!!), sent the new and old sensor and speedo all the way from UK to palo alto in california to be told the new unit was OK butnthe wires were the wrong way round in the plug !

So about £ 100 down and god knows how many hours later i felt a total idiot for not comparing the wiring between the old and new sensors !

 

My sending unit failed twice. Once (as far as I know, once) before I owned it based on the service records and one time with me back in 1998. I guessed I drove about 1500-2000 miles before I fixed mine. It was summer and I was making a lot of out of town trips so it was relatively easy to guess at the time. It was so long ago I just don't remember if it was the 1500 or 2000. I have it written down somewhere. I have no idea how long it went without it working the first time.

Anyway, I have almost 108,000 miles showing. That is really 110,000 but who really knows because of that first sending unit.

This is a part that will fail 100% of the time on all of these cars without ANY exception, given enough time. I have lots of stories...

So indicated milage should always be taken as an estimate only in every case when buying one of these cars.

 

I found out the hard way that the wires are crossed in these new units and needed to be swapped in order to work. Seems like a common theme based on people's postings in this thread. I only wished I knew at the time!

I may have been lucky as I replaced mine last summer and got it from the dealer (FMoV). Paid big $$$, but at least it arrived within days of ordering.

 

Hi all,

I also have a speedo problem on my UK spec 1987 Mondial 3.2 coupe.

The problem is that it does not show the correct road speed. For example I may be doing 60mph and it only show 25mph (who knows?).

The milometer works fine, counting the miles as I drive but thats a separate unit on these cars anyway.

The question is whether its my speed or he speedo sensor thats faulty. I am not sure the symptoms between the 2 and how to determine which is at fault but as mentioned above it works every time but just shows the wrong speed.

Many thanks.

 

If the odometer still works it is not the sensor. If both inop then probably the sensor.

 

Thanks John

Would you know that If it's the Speedo unit that's faulty is there something I can do to fix it? Maybe take it apart and see if I find anything wrong, what to look for?

My rev counter has a similar issue whereas it shows lower revs than it should as well

Thanks very much.

 

Hi there fellow Ferrarista. You need to contact Superperformance in the United Kingdom. There website is detailed and the speedo sensor is easy to find. If I remember correctly I paid in the region of 89 GDP which equates to about 150 USD . It was posted to me in South Africa and took about 10 days to arrive. There was a small fee to pay on collection from the Post Office.It also came in a genuine Ferrari package. I do suggest however that you ensure that your speedometer is working 100%. Get it checked by a qualified auto electrician before you purchase the sensor. I experienced a double fault ( speedo and sensor faulty). Good luck Mike Dewar ( South Africa) 1982 FerrARI 308 GTSI