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Replace fuel sending unit or just roll with it? #5389753 03/30/20 09:37 PM
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cwilliamsws6 Offline OP
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My fuel sending unit is screwing up and I want to replace it soon because it is getting annoying.

So the other day I filled up on gas. Every time I get gas I reset the trip-A odometer.

I have since driven 60 miles and my fuel tank was down to ~3/4 according to the gauge. Then I parked on my driveway and the incline caused it to read as full.

I have now driven 100 miles since filling up and the gauge still reads full, and I know its most certainly coming closer to half empty. My gauge is stuck.

It did this a few months ago and I was able to fix it by (and I'm being honest) swerving around like an idiot (with no other cars around of course) to slosh everything around in the fuel tank which knocked the floater loose and corrected the reading. I tried that tonight and this time it did not remedy the issue.

I looked online for a replacement unit and it seems like the fuel pump and level sensor are an all-in-one package and cannot be replaced separately (just my luck, everything on this car has to be a whole ordeal). I have seen ones ranging from $75 all the way to nearly $400.

Is it even worth it to replace the thing or should I just go and fill my gas each time my trip odometer approaches 200 miles?


2007 Honda CR-V LX "The Linoleum Falcon" 215K miles
Castrol conv 10w30, Pyroil oil treatment 15oz, 7317 orange can
"Bad decisions make good stories."
Re: Replace fuel sending unit or just roll with it? [Re: cwilliamsws6] #5389758 03/30/20 09:49 PM
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WobblyElvis Offline
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The EVAP system may use the fuel level sensor when it does a self test looking for leaks in the fuel system. If the sender continues to malfunction I wouldn't be surprised if a check engine light pops up. Do you need to pass an emissions test in your state?

Re: Replace fuel sending unit or just roll with it? [Re: cwilliamsws6] #5389759 03/30/20 09:49 PM
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GSCJR Offline
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I recently learned that my 08 CRV will travel approximately 110 miles for the gauge to move from the full mark.


07 3.5L VQ35DE NAPA FS 5w-20 ProSelect 21358 158KM
10 3.5L 2GR-FE NAPA FS 5w-20 ProSelect 27047 180KM
Re: Replace fuel sending unit or just roll with it? [Re: cwilliamsws6] #5389763 03/30/20 09:54 PM
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Drosselmier Offline
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If you have an older car and intend to " run it into the ground " roll with it. It will need to be fixed if it is a newer one or if you want to sell it of course.

Sorry, didn't see you listed the Honda.

Last edited by Drosselmier; 03/30/20 09:58 PM. Reason: Did not see OP's listed car.
Re: Replace fuel sending unit or just roll with it? [Re: cwilliamsws6] #5389864 03/31/20 01:56 AM
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Olas Offline
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do you have an access panel or do you need to cut a hole in the floor?

if the former just pulll it out and clean it up, if the latter keep a pen & paper in the car to work out how much range you have remianing.

Re: Replace fuel sending unit or just roll with it? [Re: cwilliamsws6] #5389919 03/31/20 05:41 AM
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javacontour Offline
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Looks like it has an access panel.

I think if it were my vehicle, I'd see about getting a name brand replacement like DENSO etc and swap it out. Looks like you can get original Honda fuel pumps from an online Honda parts retailer for under $300, and maybe your local dealer would come close to such a price.

https://www.youtube.com/watch?v=LhK7P3xG_-4

The original lasted 13 years and a bunch of miles, so why go cheap on a replacement? If you plan to keep this vehicle another 100k miles, do the job right.


network down, IP packets delivered via UPS -BOFH
Re: Replace fuel sending unit or just roll with it? [Re: cwilliamsws6] #5389927 03/31/20 05:54 AM
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Dave9 Offline
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How can we answer what it is worth to you to have a properly working fuel gauge?

I don't think whether there is an access panel is really the deciding factor here, dropping a tank isn't fun to do, but not terribly hard either if the vehicle functions so you don't even have to drain the tank & store much gas if at all, can just drive it till near empty.

Am I understanding correctly that you have a 2007 CR-V with 2.4L engine? The fuel pump and sender can be replaced separately (or else they wouldn't sell the pump separate, looks like it uses a standard hose and clamps setup), but that doesn't necessarily mean you can buy the sender separately. Is that a big deal? I mean with 217K mi. on it, it makes sense to go ahead and replace the pump while you're replacing the sending unit, as long as you don't get a low quality generic pump with a short lifespan.

I was going to link to a Delphi $221 sending unit w/pump on Rock Auto, but in this rare case, autozone has it for the same price which can be handy should you ever need to take advantage of the lifetime warranty:
https://www.autozone.com/external-engine/fuel-pump/delphi-gasoline-fuel-pump-dfg0923/556198_0

... at least I assumed this is the right part #, as it is what Rock Auto shows for your model year.

Re: Replace fuel sending unit or just roll with it? [Re: cwilliamsws6] #5389939 03/31/20 06:17 AM
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caprice_2nv Offline
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My mom drove her 99 Alero for several years without a gas gauge, refuelling at 250kms each time. She never had a problem with it. I sold it to a coworker (a mechanic) for his son who drove it a couple more years still with no gas gauge until it rusted out and went to the wreckers. I'd decide based on the price and how much it bothers you.


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Re: Replace fuel sending unit or just roll with it? [Re: cwilliamsws6] #5389940 03/31/20 06:22 AM
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SeaJay Offline
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I'd live with it & fill up every 200 miles.

Re: Replace fuel sending unit or just roll with it? [Re: cwilliamsws6] #5389965 03/31/20 07:23 AM
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Trav Offline
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Try this in a full tank of fuel, do it twice. OE manufacturers have specified this product by name for this exact problem in TSB's over the years.

https://www.amazon.com/Chevron-Techron-Concentrate-System-Cleaner/dp/B00092893E


ASE L1, Master. Deutsch Meisterbrief.
Re: Replace fuel sending unit or just roll with it? [Re: cwilliamsws6] #5389994 03/31/20 08:08 AM
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Run the tank till almost empty and then fill it with 94 octane, the additives in the premium gas may gum out whatever is making the sender malfunction.
If that fails I believe you have to remove the back seat to have access to the unit.

Re: Replace fuel sending unit or just roll with it? [Re: Trav] #5389996 03/31/20 08:10 AM
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tiger862 Offline
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Originally Posted by Trav
Try this in a full tank of fuel, do it twice. OE manufacturers have specified this product by name for this exact problem in TSB's over the years.

https://www.amazon.com/Chevron-Techron-Concentrate-System-Cleaner/dp/B00092893E

+1


Tiger862
2018 Grand Caravan
Re: Replace fuel sending unit or just roll with it? [Re: Trav] #5390026 03/31/20 09:00 AM
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Originally Posted by Trav
Try this in a full tank of fuel, do it twice. OE manufacturers have specified this product by name for this exact problem in TSB's over the years.

https://www.amazon.com/Chevron-Techron-Concentrate-System-Cleaner/dp/B00092893E


I agree. Sometimes a contact is dirty and Techron will clean off the oxidation. E36 sending units would play up quite often in the ‘90s, the problem being the rotgut that passed for gasoline in the US at that time.


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Re: Replace fuel sending unit or just roll with it? [Re: cwilliamsws6] #5390053 03/31/20 09:37 AM
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In my 89 Sierra the gas gauge was not reading correctly, I would fill up and the gauge would only go to 3/4 and then it would read full when I should of read 3/4, it was really bad when it got down to 1/4. I tried a few tanks of Techron and it didn't help so I double dosed some Star Tron and after a couple tanks it now works like it should. Now I add a regular dose every other time I fill up.

You can get the diesel version which is just more concentrated.

https://smile.amazon.com/gp/product/B00EZNZ620/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

I would try one or the other before I went ripping into it, just might work for you.


89 GMC Sierra Advanced 5w30/TG
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18 Toro Super Recycler T5 10w30
Re: Replace fuel sending unit or just roll with it? [Re: Pelican] #5390073 03/31/20 10:04 AM
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Lubener Offline
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Originally Posted by Pelican
Run the tank till almost empty and then fill it with 94 octane, the additives in the premium gas may gum out whatever is making the sender malfunction.
If that fails I believe you have to remove the back seat to have access to the unit.

Detergent wise, there's no difference between regular and high test, just a myth.


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