Anyone Know A Fix For This?

[SysLink67]

I have searched the entire forum before asking this, aswell as UK skyline forum.

My new nismo meter set won't read speed correctly ( ie shows im doing 120kph when im actually doing 50 kph etc ) and HICAS light stays on.

I have done the following so far to fix these problems :

1. Fit a brand new speedo cable.

2. Checked oil levels for HICAS

3. Changed over speed sensor as the back of dash for orig cluster that was working fine.

4. Checked Battery power level, which is a dry cell optima yellow top with plenty of juice left in it.

The nismo set is meant to be plug and play.... Don't or shouldn't need calibration or a addon gear reduction box etc.......

Also speed reads correctly via Apexi power FC hand controller LCD display .......

are there any skyline guru's out there that could possibly shed light on this situation.......... or offer a solution.

I won't take it to nissan for them to charge me countless hours for them to try and find the problem and come to the same point as me nor a exclusive over priced performance shop that I will shell out

$'s for them to try and find problem with no solution.

any help would be greatly appreciated.

Rob

[SysLink67]

Also car is a R32 GTR 1990.

[infamous_t]

I vaguely remember someone saying early GTRs were different to latter ones in regards to the speedo, I remember someone selling one for this reason.

I think we can safely assume HICAS is acting up due to it not getting a speed signal(it relies on speed sensor used for dash)

I had a quick search, but couldn't find the thread, but im sure there was a solution for this already...

[bubba]

+1 for later 32's being different. When I got my 260kph dash I had to make sure it was series 1.

It is odd however that the PFC reads the correct speed.. 32's get the electronic signal from the dash so logic would dictate that if that isn't reading correctly then the ECU shouldn't be either..

If the PFC is getting the correct speed then I think HICAS should be too. Did you have your steering wheel off at all?

[SysLink67]

The speed sensor is the only change between the early models up to the 91/8 series.

The speed sensor and speedo is excatley the same as my current GTR speedo, I even swapped the speed sensors to double check.

Also the apexi PFC displays the correct speed which relies on the data front he speed sensor, hence I hence rule that out.

The HICAS light is on but I have full steering.

I have never had the steering wheel off.

and the extra confuse the FUBAR`D situation the speedo worked correctly once.....

the only thing I can think of is the little square slot in the back of the speedo is slightly worn and not making proper contact..... thats a very long stretch though.

I have been through all the normal causes for this problem.

Must be someone out there taht can shed some light on this....

[bubba]

Even if the slot was worn the ECU's are still getting the speed signal after the cable goes into the speedo.. I'd be looking more at the speedo itself and 70kph difference is a lot!

[SysLink67]

  bubba said:

Even if the slot was worn the ECU's are still getting the speed signal after the cable goes into the speedo.. I'd be looking more at the speedo itself and 70kph difference is a lot!

the speed sensor is working correctly.

the nismo dash has gearing down already, its a plug n play item. But to me its a plug and cluster f**k.

[heller44]

If the speed sensor is all good, then all it can be is the mechanicals in the the speedo itself.. stands to reason.

Do you still have the original one to plug back in and try?

Can't see any reason for it to do that sort of silliness unless the meter itself is shot. Pull it out of the cluster (just a couple of crews) and have a look.

edit* the difference between early and late dashes is the pinouts and layout of the back of the cluster, and the mountings and design of the speed sensor on the back of the speedo. I had to modify mine as it came with a late model dash that had been dropped in, and the monkeys had left it all borked. Not too hard to do, if you have the original dash there to compare with.

Edited June 15, 2008 by heller44

[jenkies]

ive got the same issues mines a 1993 my speedo is constantly out(stock) sometimes double what its meant to be. my hicas light is constantly on except for those few times where it briefly blinks off

[SysLink67]

  jenkies said:

ive got the same issues mines a 1993 my speedo is constantly out(stock) sometimes double what its meant to be. my hicas light is constantly on except for those few times where it briefly blinks off

Have you had any solutions yet?

[infamous_t]

Have you guys considered using a speedo correction kit, like Jaycar sells?

I know its not an ideal solution to the problem, but it should work.

Another thing just popped into my mind, are the senders from the gear box the same thru out the R32 GTR range?

This could also be causing issues?

[heller44]

tristran, that won't work. The r32 speedo is mechanical, from the gearbox right to the instrument cluster.

So.. if the speed signal on the pfc is good, that means that the drive up to the back of the cluster is good, so all it leaves is the mechanical bit after the initial joint where the cable mates.