Fuel pump
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NCrunner2012
New member
I think it's pretty subjective, but I replaced mine at 220k
UrbanRunner651
New member
My 08 has 209k on it and mine is starting to show signs of failure.
Another members thread described similar issues with 230k.
Not an exact number but many other seem to be north of 180k when they do a replacement.
PN for the 4th gen is 7702035112
Another members thread described similar issues with 230k.
Not an exact number but many other seem to be north of 180k when they do a replacement.
PN for the 4th gen is 7702035112
gimlithepirate
New member
My fuel sender failed (gas gauge was all over the place) at 180k miles. There was no way I was only replacing the fuel sender if I had to drop the gas tank, so I replaced the sender and the fuel pump.
Make sure you replace the filter as well if you do it, and use a Denso (OEM) filter.
Make sure you replace the filter as well if you do it, and use a Denso (OEM) filter.
if made by Denso, can it be purchased without the Toyota mark up? and, is this a DIY job? i saw a tube video the showed an access port under the rear driver side carpet that allows you to unplug the pump electronically. in this video, they also cut the thin floor sheet metal to lift the pump out without dropping the tank (i am not recommending that method!).
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gimlithepirate
New member
Definitely a DIY job. Difficulty totally depends on the level of rust you've got. If your rust is minimal, and you can get all the gas out of the tank before swapping it, its really not that bad. You undo the straps, lower the tank, disconnect the hoses, and then pull it out and service the pump.
To clarify, I couldn't find an OEM fuel filter. Had to buy the entire assembly for that ($$$$$). However, you can get a Denso fuel pump for 125$ from Rockauto.
Bluesky 07
Senior Member
In case any of this is helpful, I cut and pasted my post about the recent replacement of my '07's fuel sending unit at 228K miles. I replaced the fuel pump as well since the tank had to be dropped anyway. As noted, I elected not to DIY it. While many have, it turned out to be a good call b/c the Denso fuel pump I ordered was missing an o-ring and wouldn't hold pressure. The repair shop had to drop the tank again to install the o-ring. YMMV of course. I would not recommend trying to cut the floor access larger, first b/c it's just not a good idea and also b/c the sheet metal there has numerous creases and reinforcements that would make cutting problematic. Here's the post:
===
Had my fuel sending unit replaced and did the fuel pump for good measure while the tank was out. The video at the end of this post by someone named Rick S. provides an impressively detailed analysis of the issue, the short version being that I recognized a number of the symptoms described have been going on with my truck for years. Recently it started reading 1/4 tank low all the time. I'm keeping this truck forever so I fixed it and wanted to provide some pics and info.
For reference, my 4R is an '07 V6 with ~228K miles.
Cost: Parts ~$283 | Labor $393 with 10% veteran discount makes the total ~$676. Yeah, a lot of money, but probably about a month's car payment on a new vehicle so there's that. Someone comfortable doing the job themselves could do it for about $250 worth of parts (fuel pump kit, fuel sending unit, and the housing with the filter media and even that's kind of optional).
Chokes me to pay the labor but after consideration of the job itself and other things going on, it was worth it.
Parts list. OEM items are from Cobb County Toyota's online store.
8332060440 $ 95.70 GAGE ASSEMBLY, FUEL SENDER
2330050120 $ 37.97 Fuel Filter << This is the housing w/filter media in it
7714435010 $ 33.59 Fuel Tank Lock Ring << Didn't necessarily need
7716904050 $ 6.34 Fuel Pump Tank Seal << Gasket
Denso fuel pump & mounting kit - ~$109 from Amazon
Here's a comparison of the fuel sending units and the problem is obvious - the "track" where the end of the float arm moves gets worn away over time.
Old:
New:
Interestingly, the 4th Gen fuel filter has two components. There's the strainer, which I have to say looked pretty clean for the age and mileage.
Old:
New:
Then the housing itself has filter media inside, visible through the hose connections in this pic of the new one. I unfortunately couldn't get a pic of the old one but it was nearly black.
Here's the video by Rick S. Worth watching if you're having these issues or just want a very thorough understanding of the fuel sending unit and how it works.
<iframe width="560" height="315" src="https://www.youtube.com/embed/yzfGmA-T9TI" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
===
Had my fuel sending unit replaced and did the fuel pump for good measure while the tank was out. The video at the end of this post by someone named Rick S. provides an impressively detailed analysis of the issue, the short version being that I recognized a number of the symptoms described have been going on with my truck for years. Recently it started reading 1/4 tank low all the time. I'm keeping this truck forever so I fixed it and wanted to provide some pics and info.
For reference, my 4R is an '07 V6 with ~228K miles.
Cost: Parts ~$283 | Labor $393 with 10% veteran discount makes the total ~$676. Yeah, a lot of money, but probably about a month's car payment on a new vehicle so there's that. Someone comfortable doing the job themselves could do it for about $250 worth of parts (fuel pump kit, fuel sending unit, and the housing with the filter media and even that's kind of optional).
Chokes me to pay the labor but after consideration of the job itself and other things going on, it was worth it.
Parts list. OEM items are from Cobb County Toyota's online store.
8332060440 $ 95.70 GAGE ASSEMBLY, FUEL SENDER
2330050120 $ 37.97 Fuel Filter << This is the housing w/filter media in it
7714435010 $ 33.59 Fuel Tank Lock Ring << Didn't necessarily need
7716904050 $ 6.34 Fuel Pump Tank Seal << Gasket
Denso fuel pump & mounting kit - ~$109 from Amazon
Here's a comparison of the fuel sending units and the problem is obvious - the "track" where the end of the float arm moves gets worn away over time.
Old:
New:
Interestingly, the 4th Gen fuel filter has two components. There's the strainer, which I have to say looked pretty clean for the age and mileage.
Old:
New:
Then the housing itself has filter media inside, visible through the hose connections in this pic of the new one. I unfortunately couldn't get a pic of the old one but it was nearly black.
Here's the video by Rick S. Worth watching if you're having these issues or just want a very thorough understanding of the fuel sending unit and how it works.
<iframe width="560" height="315" src="https://www.youtube.com/embed/yzfGmA-T9TI" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
i have been experiencing power hesitation for several months now, at 230k. i've driven the 4runner as owner for about 4 years. i tend to keep the tank at about 1/2 full, running it to 1/4-warning light, then back to 1/2. i see the wear zones on your old pump. mine probably has the same in the 1/2-0 zone, and that is why the pump is working normally at a full tank vs a low tank.
if i keep it in the 3/4-full zone i will probably be good for a while until replacement. great and timely write-up!
if i keep it in the 3/4-full zone i will probably be good for a while until replacement. great and timely write-up!
AuSeeker
Elite Member
That wear you're seeing on his old sending unit would only affect the gas gauge accuracy, it shouldn't have any affect on how the engine runs, only the pump itself and or the filter would affect how the engine runs!
Drcoffee
Senior Member
Yes, rockauto has the denso pump.
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Bluesky 07
Senior Member
Yes, I linked to it on Amazon (~$109) in my post above as did Dr. Coffee (since RockAuto charges shipping, it's essentially a wash). But be aware that you'll need to remove the old pump from the housing and install the new one as shown in the illustration.
Also note the two-stage fuel filter system; the one called "fuel filter" is in the housing (pic in my previous post) and then there's the one which comes with the fuel filter and kind of resembles a coffee filter. So if you want a new fuel filter too, you'll need the housing, which is Toyota p/n# 2330050120. I paid ~$ 38 at a dealer's online parts store.
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Bluesky 07
Senior Member
The only fuel filters are the two in the tank, the one in the housing and the one on the bottom of the fuel filter. I would definitely replace the sender given the difficulty of getting to it and the seeming inevitably of eventual failure. OEM is ~$100; can't remember if aftermarket is available for less. The sub tank is not included and there is no reason I'm aware of to replace it. I didn't.
dgwood12
Member
I know your post is a few months old so I am not sure what you decided to do but I am also looking to replace my fuel pump. After some research, I believe the part number and price you listed (23221-31050 for $320) is just for the Denso pump and not the entire fuel pump housing, sending unit, filter, etc. Did you order this part and if you did, can you confirm what you received?
I found part number 7702035112 which appears to be everything included for $643.80.
I am still debating on what to do but I am thinking $643 for the entire unit is way too much. I am thinking I may just replace the pump and sending unit. I thought about also doing the filter while I'm at it but there's some more info on the filter in this thread that's making me think it might be unnecessary:
Servicable Fuel Filter?
Either way, its still < $300 if I source the pump with strainer (Denso from Rock Auto), Fuel Sending Unit, Fuel Filter and a new Tank Gasket (all OEM from my local Toyota dealer).
