Jump to content
View in the app

A better way to browse. Learn more.

300ZX Owners Club

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.

..happened this morning, odometer isn,t clocking the miles either. Everything else on the dash works ok, and the power steering felt heavy for a few seconds.

 

Am I looking at dirty connection / faulty speed sensor? - or am I looking a faulty speed converter? - it's a jap 1990 NA.

 

...any advice will, as always be greatfully received.

 

many thanks

 

Jack

Featured Replies

With cars with speed convertors its usually the convertor that is fault.

 

Take it off and see if it starts to work again.

Mine is also an import with convertor, turned out not to be that. Took out speedo and resoldered all solder joints, reassembled and jobs a gud 'un

Mine is also an import with convertor, turned out not to be that. Took out speedo and resoldered all solder joints, reassembled and jobs a gud 'un

but Paul was it only your speedo that wasnt working or were your odo and trip counter not working as well?

Speedo, odo and trip were not workin !

 

but Paul was it only your speedo that wasnt working or were your odo and trip counter not working as well?
Speedo, odo and trip were not workin !

dammit, that's three things to check now. i hope its the stoopid speed sensor

  • Author

...thanks for the info guys - it's started working again of it's own acord - but I'll add it to the list for the weekend I do the 60k service...

 

cheerz

 

Jack

...thanks for the info guys - it's started working again of it's own acord - but I'll add it to the list for the weekend I do the 60k service...

 

cheerz

 

Jack

 

Hi Jack

Don’t get your hopes up bud, as it will fail again soon. Two things to check

 

1..When it fails, apply some force to your speedo surround" use the side of your hand at high altitude and velocity" give it a good belt a couple of times. If you do have dry joints within the speedo, then performing this test will show up the fault. In most cases your speedo will resume. Remove unit and touch up all joints.

2.. When it fails, if the above test has been performed and the speedo still does not work then turn off the engine and turn it back on again, if your steering all of a sudden goes lighter then the problem is 99% the speed sender unit. Removing the sender is very simple, only 1 screw and 1 connector "from memory " Remove and clean the connector at both ends"male/female" reinstall and try again.

 

Some speedos mostly fail when in damp or wet weather, is mostly down to moisture within the sender unit connector.

 

If you require a new sender, Mike Freeny MJP stocks these and they dont cost too much.

 

Thanks

Dave C

  • Author

Dave - thanks for the info - I've to to a 60k service soon so I'll clean up the sender unit then - assuming the speedo dosn't fail in between time - in which case I'll try the 'velocity' method.

 

cheerz

 

Jack

  • Author

Stuart

 

...the speed converter is normally a silver box added to the electrics on top of the dials in the dash (assuming yours is a Jap import - if it isn't, there isn't one). As for the sender, I believe it's underneath the car, assocaited with the gearbox. I've never sought it as I've never had any problems with it - hence the vague description. If you search this forum (a great source if Z info) you'll find an on-line maintenance manual - and you'll find the sensor pictured in there.

 

Good luck

 

Jack

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Unfortunately, your content contains terms that we do not allow. Please edit your content to remove the highlighted words below.
Reply to this topic...

Recently Browsing 0

  • No registered users viewing this page.

Important Information

Terms of Use

Configure browser push notifications

Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.