Fuel Gauge

[RDF]

I'm having a problem with my Fuel Level gauge that I just installed in my car.  I just filled up the car and it reads full, but as I drive down the road and make turns (even slight turns) the needle bobs around from full all the way down to 1/2, then back up.....but the needle almost never stays still while driving.

Anyone have any ideas?

It's an Auto Meter,  Pro Comp, Ultra Lite II 2 & 5/8.  Here's the summit description of what I bought:

Gauge, Ultra-Lite, Fuel Level, Empty/Full, 73 Ohms/8-12 Ohms, 2 5/8 in., Analog, Electrical

Brand: Auto Meter
Product Line: Auto Meter Ultra-Lite Analog Gauges
Part Type: Gauges, Analog
Gauge Style: Auto Meter Ultra-Lite
Gauge Type: Fuel level
Gauge Range: Empty-full
Gauge Diameter (in): 2 5/8 in.
Gauge Diameter (mm): 67.00mm
Sweep: 90 degree sweep
Sending Unit: Electrical
Sender Ohm Range: 73 ohms empty, 10 ohms full
Gauge Face Color: Silver
Gauge Number Color: Black
Pointer Color: Red
Bezel Color: Silver
Liquid Filled: No
OEM Replacement: No
Sending Unit Included: No
Quantity: Sold individually.
Gauge Series: Analog
Footnotes: 23 - Air-core meter movement.
53 - For most Ford vehicles 1988 and earlier (except 1987 and later Mustang) and most Chrysler vehicles.


The only other thing I did "gas" related was change my Fuel Tank Sending Unit at the same time.

[Super Blue 72]

I'm wondering if this is "normal" just from the gas sloshing around and the float moving with the gas?   

[purple1]

Sounds like it may be a grounding problem at the tank. Did you replace the ground strap on the tank?

Dave

[RDF]

Sounds like it may be a grounding problem at the tank. Did you replace the ground strap on the tank?

Dave

No I didn't.....I actually didn't realize there was one.....

[MEK-Dangerfield]

No I didn't.....I actually didn't realize there was one.....

What Dave was saying is, there is a ground strap from the solid fuel line to the nozzle of the sending unit that needs a good connection.

I have NO experience with the aftermarket gauges, but the stock fuel gauge will move some. Not anything like what you are saying though. I just wonder if the float on your sending unit is big enough, or what.  Is this a Mopar sending unit and float?


  Mike

[GoodysGotaCuda]

Perfectly normal. Mine does the same, its 'accurate' with the fuel level. Not the best thing, but how it is with atleast autometers.

(and yes there should be some kind of wire, or steel wire with two clamps on the end that tie the fuel sender (usually the hose fitting) to the fuel line, chassis ground, etc.)


Kinda funny, everytime i nail the throttle, the tank goes to E...go figure.