Gas gauge problem....Help!!!!

[Deuce]

I'm cruising in the NSX, I look at the gas gauge and I have a little under 1/2 tank of gas. I continue driving and next thing I know I now have 3/4 tank. I drive a little more, no more than 2-3 miles and now I'm at 1/2 tank...... I'm thinking it's the sending unit, can anyone confirm this?? Anyone else have this problem?? Any info will be much appreciated!!!

 

[Briank]

Deuce

Yes it could be a bad sending unit, a bad connection at the sending unit, a bad connection at the 6p connector, a bad connection at the gauge or ...... You need to start checking things out at the tank with a service manual and or the electrical manual. If it is just acting up intermitantlly it may be hard to trouble shoot. If you determin there is a problem with the sending unit you may have to drop the tank to replace it.

Good luck
Brian

 

[tomc92bb000059]

Without sounding like an idiot, I have noticed that in the wife's jeep, the grade of the road makes a difference in the gauge. Now that my X has been in the shop for 5 weeks, i can't confirm it with our vehicle. Could the hilly terrain have affected it, and baffles in the tank made the gauge move slowly? My vette used to do the same thing. Am I making any sense?

Any how, good luck...

Tom

 

[tpearsall]

I would guess it's a connection problem the way it's jumping around.

In mine the gauge drops faster then the fuel consumption so by the time I really have a quarter tank left it reads empty. Luckily the fuel light is a separate system so it still reads accurate and keeps me out of trouble. I replaced the sender unit (pretty easy 30min job and $100 part if I remember correctly), but to no avail. At some point I'll try the gauge, but taking off the instrument cluster is a hassle.

- Todd

 

[ChrisK]

I would guess it's a connection problem the way it's jumping around.

In mine the gauge drops faster then the fuel consumption so by the time I really have a quarter tank left it reads empty. Luckily the fuel light is a separate system so it still reads accurate and keeps me out of trouble. I replaced the sender unit (pretty easy 30min job and $100 part if I remember correctly), but to no avail. At some point I'll try the gauge, but taking off the instrument cluster is a hassle.

- Todd

Same here. Ever since I got my NSX I've never been able to get the gas warning light to come on. I thought my gauge was just inaccurate. I've driven aboutn 30 miles with the gauge sitting on the zero and still no light. I can tell I have a lot of gas left because I typically put in 14-15 gallons only.

 

[ChrisK]

Without sounding like an idiot, I have noticed that in the wife's jeep, the grade of the road makes a difference in the gauge. Now that my X has been in the shop for 5 weeks, i can't confirm it with our vehicle. Could the hilly terrain have affected it, and baffles in the tank made the gauge move slowly? My vette used to do the same thing. Am I making any sense?

Any how, good luck...

Tom

In Deuce's case I don't think it is an uneven road surface problem because I typically drive the same roads as he does and I don't have that problem. Either way I hope you figure it out Deuce.

 

[Deuce]

I would guess it's a connection problem the way it's jumping around.

In mine the gauge drops faster then the fuel consumption so by the time I really have a quarter tank left it reads empty. Luckily the fuel light is a separate system so it still reads accurate and keeps me out of trouble. I replaced the sender unit (pretty easy 30min job and $100 part if I remember correctly), but to no avail. At some point I'll try the gauge, but taking off the instrument cluster is a hassle.

- Todd

Todd,

Is the sending unit & fuel pump set together as one unit or two separate units??

BTW thanks for everyone's opinions, I gotta start getting busy with this now......

 

[CiaoBoy]

I'm cruising in the NSX, I look at the gas gauge and I have a little under 1/2 tank of gas. I continue driving and next thing I know I now have 3/4 tank. I drive a little more, no more than 2-3 miles and now I'm at 1/2 tank...... I'm thinking it's the sending unit, can anyone confirm this?? Anyone else have this problem?? Any info will be much appreciated!!!

I have a different problem actually. If my car is parked for a few hours, when I get back in, the gauge reads as if there is 1/4 tank MORE gas than when I left it. Once I start the car and wait a few seconds, the gauge goes back down to its previous level.

Anybody have any ideas on why this happens? Is anyone else experiencing the same phenomenom?

Also, like my previous Acura Legend, the gauge can go below zero and still not be truly empty. I've seen my indicator light go on LONG after the needle has past the zero marker by about 1mm.

Is this pretty consistent with everyone else's Acura?

-CiaoBoy

 

[The REAL nsxtasy]

Same here. Ever since I got my NSX I've never been able to get the gas warning light to come on. I thought my gauge was just inaccurate. I've driven aboutn 30 miles with the gauge sitting on the zero and still no light. I can tell I have a lot of gas left because I typically put in 14-15 gallons only.

Your car is behaving normally.

As noted in the FAQ, the low fuel warning light doesn't come on until you would be putting 15.9 gallons into it. At this point, the needle reads significantly BELOW the empty line. And your car STILL has 2.7 gallons in it at that point.

I think you would probably find the low fuel warning light coming on if you drove it somewhere around 50-70 miles after the gauge was on the empty line - and even then, with 2.7 gallons left, you would have another 50-70 miles of gas left to get you to a gas station.

 

[tpearsall]

Todd,

Is the sending unit & fuel pump set together as one unit or two separate units??

BTW thanks for everyone's opinions, I gotta start getting busy with this now......

They are seperate units, the sender dangles in the tank with a connector to the gauge. I hate to admit it, but the install was pretty funny...I recevied the sender, read in service manual about removing the access panel to get to it, and proceeded to spend 20 minutes climbing over, under and around the car before I removed the interior panel behind the driver seat to find it.

- Todd

 

[NSXCessive]

How does the sending unit and gage read the level of fuel remaining in the tank?

1) Temp?

2) Volume?

3) Other?....