Lotus Elise Speedo Won't Work!

[s1elisedriver]

i have a s1 lotus elise and the speedo just stop working, what are the possible things it can be or what is it more likely to be?

[kambites]

Most likely to be the sender on the wheel, I would imagine. Is the odometer/trip distance readout also not changing?

If you know someone with an OBD reader, that'll tell you whether the ECU is getting a signal.

Edited by kambites on Wednesday 12th January 09:54

[Scuffers]

kambites said:

If you know someone with an OBD reader, that'll tell you whether the ECU is getting a signal.

S1's don't support OBD (as in std OBD)

as said though, usually the rear left wheel speed sensor has either become damaged (or the wiring to it) or has moved too far away from the CV mounted ABS relucter ring.

[Scuffers]

just thinking a bit more on this, the wiring for the speedo sensor is VERY close to the interta switch that your mad 'fixed' for the fuel pump problem.....

[kambites]

Scuffers said:

S1's don't support OBD (as in std OBD)

Oh OK. I thought all K-series ECUs did.

[Scuffers]

kambites said:

Scuffers said:

S1's don't support OBD (as in std OBD)

Oh OK. I thought all K-series ECUs did.

nope, Mems (as in used in the Elise) was never OBD(II) compliant, it's proprietary.

[kambites]

Scuffers said:

kambites said:

Scuffers said:

S1's don't support OBD (as in std OBD)

Oh OK. I thought all K-series ECUs did.

nope, Mems (as in used in the Elise) was never OBD(II) compliant, it's proprietary.

Interesting. I hadn't realised that they'd changed to a completely different ECU in the S2.

[Scuffers]

kambites said:

Interesting. I hadn't realised that they'd changed to a completely different ECU in the S2.

S1 used Rover supplied Mems,

S2 Lotus went to EFi for their own branded ECU (K4)

[s1elisedriver]

thanx for the replys.. Scuffers i forgot to mention this problem was way before the fuel pump issue, so im gonna take ur word for it and take of the rear left wheel and check that sensor, can u give me a fair idea where it is located roughly thanx mate

[s1elisedriver]

kambites, no the speed/distance meter does not work either, so is if not the wheel sensor can it be the gearbox switch, or speedo itself?

[Scuffers]

s1elisedriver said:

kambites, no the speed/distance meter does not work either, so is if not the wheel sensor can it be the gearbox switch, or speedo itself?

gearbox is not used, it runs of the rear left wheel.

if you pull the wheel off, then the brake disk, it's in-front of the upright, you can't miss is.

it's supposed to have a 0.5 to 1mm clearance to the (toothed) ABS ring on the CV

[s1elisedriver]

PROBLEM SOLVED!!

was indeed the wheel sensor, the two cables weren't connected.. must of fell out whilst driving, my electrician soldered them back.. was a bit of a mission but got it done eventually, thanks guys for your help especially scuffers your a legend mate, you ought a be a lotus mechanic hehe

cheers