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Discussion Starter #1
Hi-
Today I was backing out of a parking space and a Prius rearended me, impacting the drivers side rear bumper.
I drove it home, but noticed the gas gauge showed empty with the gas light on.
It was low on gas earlier, so I thought nothing of it and filled up at the gas station....But the light is still on and no gas bars are showing.
With a full tank on the way home, I noticed when stopping at lights I could hear something sloshing or swaying toward the back of the car. I'm assuming it is the gas tank somehow dislodged or something.
Also, the muffler seems a little loose.

I'd like to know where the gas tank is located and if this seems plausible that it could have come loose and is bouncing around.
Where is the fuel sensor? Inside the tank? What would cause it not to read the level and keep the fuel light on?

Is the muffler usually firmly attached to the bottom of the car, or does it have some play in the way it is mounted. Currently, it is not swinging or anything, but it does move a little.

Thanks in advance for any help or feedback.
I'm really bummed, as I just bought this car a couple months ago and it's awesome!
 

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Happens with even minor rear end accidents.

The fuel pump sender is very fragile. Sometimes the whole fuel pump/sender assembly comes unclipped, which is an easy fix. Otherwise, you have to replace the pump/sender unit.

Don't worry about running out of fuel, it's easy to get by. I drove Insight #1 for 2 years with a broken sender due to a minor accident and only ran out of gas once when I was trying to push the envelope.

The Insight's tank is 10.6 gallons. Fill the tank up and reset a trip meter, then multiply your MPG by 10. So if you're getting 60mpg, you can drive 600 miles.
 

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Discussion Starter #3
One more thing...
The rear bumper is totally caved in on the passenger side corner. Luckily the wheel skirt is fine. I need to buy a new bumper. Does the black bottom trim piece come with it, or is that separate?
Are there metal supports that will need to be replaced along with the bumper?
Any leads on finding a cheap, silver, rear bumper are greatly appreciated.
Thanks
 

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Discussion Starter #4
Thanks!
Is the fuel sensor inside the tank itself?
If so, it could be a messy job. I'm willing to do it, just gotta know where to look.
 

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Discussion Starter #6
Here's a DIY on the pump/sender:

Wow! Thanks Eli!
That is a great DIY posting for the pump/sender!

I found some great deals on bumpers too, via parts searches.
Not sure if the black trim detail is included though, as most of the pics don't show that attached to it.
 

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The black piece is a separate piece, you should be able to re-use yours if it's not damaged.

 

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Discussion Starter #8
The black piece is a separate piece, you should be able to re-use yours if it's not damaged.

Yes, the black piece is damaged too. Do you know what it's called?
Looks like #22 on the diagram is some kind of metal bracket. I'm going to have to take off the bumper assembly and look to see what else is bent/broken.
Currently, the license plate is bent, so I bet there are other support brackets inside that may need to be straightened or replaced.
 

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Discussion Starter #10
#20 is the Bumper Skirt.

#22 is the Bumper Beam.

Honda Automotive Parts

Question - They hit you. Why isn't their insurance taking care of this?
It just happened today and I haven't found out yet whether the insurance co. will pay. From what I could find out from the reporting officer, since I was backing up in reverse, I am at fault. Different than being rear-ended when driving forward or stopped. Sounds absurd to me, but I'm hoping that since the Prius was speeding, they will be deemed to be at fault.
 

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Hello, I know this incident happened a while ago but did you ever get this issue resolved? My car was just rear ended and the bumper was smashed in the same spot as yours. It's finally repaired but the day I got rear ended I had a little less than a half a tank of gas but when I picked my car up the my gas light was on and the needle was way below empty. I could only put in a few gallons. The body shop told me it was a fluke and my needle was confused and to give it time. Then each time after I talked to them about it their story changed and they gave me BS excuses. I have filled up 3 times since and each time and I am putting in much less than the normal amount. The auto body shop said they see nothing wrong. Currently I am working with my insurance company to take it elsewhere because this is not normal. It's very frustrating.
 

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I got the insurance to pay me for a new fuel pump assembly when I was rear ended. Mine was out of calibration as well, and it also read low. Print the threads here and fight them, that's BS that they are not covering it
 

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Body shop <> Mechanic. I don't see why the shop is even fighting you unless they got a fixed amount from the adjuster and they won't get paid for fixing it.
 

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I keep getting booted out of a reply. I hope I am not posting this three times. My insurance isn't the problem at all. They have been very cooperative and even sent a damage specialist to our home 2 hours away from their office to meet me at the body shop to inspect the work because the body shop screwed everything up so terribly. They had to redo the body work. It's been a long terrible situation. The body shop has " NO CLUE" as to why I am experiencing this problem especially since there was no structure damage to my car. They sent my car to Honda(owned by the body shop) and they claim my car was hooked up to a computer diagnostic program and no problems were found. I don't think this problem would be diagnosed by a computer but i may be wrong. My insurance was going to take the body shop side but then I told them I was going to go elsewhere. That I would pay for it out of pocket, prove the body shop wrong and then submit the bill. He saw my conviction and probably realized my complaint was valid. They were very happy to set up a new appointment at an alternate shop not affiliated with the first body shop. (if i go to one of their body shops the insurance will guarantee the body work for the entire time I own the car)

Many times when I drive at a steady pace I notice the car pause for a brief moment like a hesitation or brief stall. Did you guys experience that too? Also there were two times that I noticed a knocking sound in my gas tank with sloshing..sounded like boats tied up to a dock in the bay. Body shop said that was impossible.

My only saving grace is I have kept a work diary of my 10 trips to the body shop and its documented about the hesitation, numerous trip and gas gauge complaints. I just hope the people at the next body shop actually know something about repairing a car. Any thoughts?
 

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If you have read the thread(s) describing what can happen to the fuel level sensor during a rear-end collision, it would make sense that a part that had been knocked loose from the fuel level sensor or that had broken might bang around in the tank enough to be heard. Others have reported that merely reassembling the fuel level sensor fixed the problem. It's also possible that the fuel level sensor might have been broken and would need to be replaced. But in either case, the tank must be opened up to fix the fuel level sensor which probably isn't something that body shops would normally do.

The Insight Service Manual instructs to drop the tank to fix or replace the fuel level sensor. But others have reported a way to access the fuel level sensor through a hole behind the seats (probably in the area inside the battery pack compartment in front of the battery pack). In either case, a mechanic, not a body man, needs to make this repair.
 

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I believe the Insight Service Manual instructs to drop the tank to fix or replace the fuel level sensor. But others have reported a way to access the fuel level sensor through a hole behind the seats (probably in the area inside the battery pack compartment in front of the battery pack). In either case, a mechanic, not a body man, needs to make this repair.
Its strange that the Honda service manual says to drop the tank to replace it, because even in the technical video from Honda, they show it as being accessible from behind the seat panels. Its as if there is a mistake in the service manual or a lack of communication between the honda engineers and the people who wrote the manual
 

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I've accessed the fuel pump from behind the seats, it's a pain to do, you're bent over, half in the car half out, you have to do the right side, then go over to the left side, there are lots of bolts and other attach plugs that need to be accounted for, and once you get to the area, it is sort of a tight area for the fuel pump access.

I've not dropped the tank, but I would think it might be easier way to access the fuel pump, hoses and wires - the car is up on a lift, you're standing up, move a step this way, a step that way to access the left or right side, no awkward bending over, and once you get the tank everything is very accessible.
 

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I've done it both ways and honestly going in from the top is much easier. In addition, the gas tank is HEAVY when full and very dangerous when empty (boom!), so fill it 1/2-3/4 before opening if you can and go in from the top.
 
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