Gas gauge

Asked by Murphy28 Mar 13, 2013 at 05:02 PM about the 1987 Nissan 300ZX 2 Dr GS 2+2

Question type: General

When the fuel tank is full the gauge is measuring it right but once it goes below 1/2 tank the needle
drops all the way to empty.  The only way I know it still has fuel in it is by the mileage.  I have people
tell me that I need to fill up when I have just driven it 100 miles.

5 Answers

248,885

Sounds like a bad sender, the sender is just like a rheostat with segments that tell the gauge how many ohms for different fuel levels, sometimes those segments get dirty or simply wear through and then the gauge looses the signal. Hope this helps.

2 people found this helpful.
153,615

Running around with less than half a tank for twenty years has worn a hole in the resister windings. Reset the trip odometer when you fill it up so you know how many miles you have gone.

1 people found this helpful.
125

I concur. It is your sending unit.

1 people found this helpful.
10

My car is doing the exact same thing, but my mechanic is telling me that I have 2 sending units and they both have to be changed.. Is this true? Thanks

1 people found this helpful.

not the sender unit i have tested and replaced

Your Answer:

300ZX

Looking for a Used 300ZX in your area?

CarGurus has 2 nationwide 300ZX listings and the tools to find you a great deal.

Postal Code:

Nissan 300ZX Experts

  • #1
    Jamie Staples
    Reputation
    400
  • #2
    dandyoun
    Reputation
    350
  • #3
    G A Arne
    Reputation
    300
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Toyota Supra
101 listings starting at $59,998
Used Chevrolet Corvette
27 Great Deals out of 305 listings starting at $7,900
Used Ford Mustang
29 Great Deals out of 1,157 listings starting at $4,450
Used Nissan Skyline
3 listings
Used Mazda RX-7
2 listings
Used Toyota MR2
1 listing

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.