speedo help

ONLY for ADVANCED technical discussion about the 240sx!
Fla S13
Posts: 299
Joined: Fri Feb 28, 2003 2:32 pm
Car: CARS!

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i drive a 90 fastback and my speedo dosent work the tack and all the other gauges work and the dash lights but not the speedo. so my question is, do i have a speedo cable or is it electric?? and where can i get one.

Dj


Pemdas
Posts: 38
Joined: Mon Sep 23, 2002 10:08 am
Car: spinning, 240s, bad *** *****es

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its probably a cable and you can pick one up from any auto store

meepins
Posts: 15
Joined: Wed Mar 12, 2003 4:01 pm

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ummmm... no stupid.

People should freaking know what they are talking about before they open their pie holes!

The entire cluster is electric guy so what the problem is, would be hard to tell. A short? sensor short? cluster short? who knows and hard to say.

but the answer is no it is not a cable it is definitely electric.

Calvin
Posts: 48
Joined: Mon Mar 10, 2003 1:21 pm

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**THE SPEEDOMETER IS ELECTRIC**

Lots of us have had to replace our speedometers. The gauge cluster is modular so the speedo unit can be relaced separately, but a new one is still very expensive. You can easily do it yourself with only a screwdriver. It will take about two hours if you've never done it before.

Before you jump to conlusions, you'll want to check the sending unit. From http://www.240sx.org/faq :Quote »The Speed Sensor is on the right hand side of the transmission just at the end where the drive shaft comes in. To check it's operation, remove the sensor and measure the voltage (A.C.) across the 2- terminals. Spin the pinion quickly and you should get approx. 0.5V A.C.[/quote](I didn't test mine myself, so I don't know removing the sender cases fluid to run out, or not?)

Also check the connectors and wiring.

Speedometers can do weird things as they die. Mine acted "drunk". i.e. working sporadically, bouncing around, falling dead off the high end, then coming back to life and working BACKWARDS! Crazy.

If you have to get a new speedo, be sure to shop around to find a Nissan dealer who's willing to offer discount prices, because otherwise the speedo is quite expensive. If your local dealers are too expensive, then use mailorder. Your other option is to do a search on http://www.car-part.com and get a used one for about $35. Unfortunately, the speedo problem was common, so a buying a used one is a gamble.

Pemdas
Posts: 38
Joined: Mon Sep 23, 2002 10:08 am
Car: spinning, 240s, bad *** *****es

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meepins wrote:ummmm... no stupid.

People should freaking know what they are talking about before they open their pie holes!

The entire cluster is electric guy so what the problem is, would be hard to tell. A short? sensor short? cluster short? who knows and hard to say.

but the answer is no it is not a cable it is definitely electric.


sorry i teh dummy

User avatar
1dollar240
Posts: 646
Joined: Wed Jul 24, 2002 1:46 pm
Contact:

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Hey, if you need a speedo, i can sell ya one cheap. Just picked up an extra at the junkyard today as a matter of fact. It functions perfectly and looks great. Let me know if you want it. [email protected]

yellow_jacket
Posts: 1355
Joined: Mon Jan 13, 2003 4:43 pm
Car: 95 240sx

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Is this an auto trans vehicle? If so when the speed sensor goes bad you will have shifting problems.

ka24de_510
Posts: 66
Joined: Sat Jul 27, 2002 9:28 am

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it will make a nice mess if you pull the sender out.

if you just can't resist that neat old-fashioned mechanical speedometer, a 78-81 280zx sender fits right in with a slight modification to the sender.


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