Fuel Issue - Leakdown fail (1 Viewer)

[Les Summer]

@Iverano, I'll share what I found for the record. I couldn't find this info documented in one post so I'll post it here in hope it helps someone in 2023 and beyond:

The quick of it seems to be that the 3 below Denso part numbers I found are difficult to source, at least right now and even the last 2 years or so (according to other Mud posts). The reason seems to be, according to one relatively recent Mud post I found, that Denso was getting out of the business, even sold off that part of their business in pursuit of electric cars (which if true, further evidence's WEF type stuff is materializing). And/Or is being manufactured in china now (by the new owners of the product line?). Either way, mostly just not available on the websites and people even getting orders cancelled.

I'd be curious to hear what you experience.

Denso 950-0210 was ONLY? for the last 2005-2007 100 series. ~$130 (where listed) Don't know about strainer or fittings. (I have a 2004)
Denso 950-0107 Includes extra fittings AND the strainer ~$200 (where listed)
Denso 951-0003 Includes extra fittings no strainer ~$130 (where listed)

Toyota OEM 23221-66040 (an updated/new part number according to Amayama) ~$300 delivered to US and available don't know about strainer etc.

Both TYC's I ordered came in about a week for ~$40 shipped from Rock auto. I saw the Delphi for well over $150. Other lesser known likely made in china/questionable quality like the Delphi I pulled, everywhere in between but apparently available at least.

I did not come across the part number you mentioned. Please let us know what you find.

Thanks! The part number is on partsgeek.com, but of course out of stock. I may end up going to the dealer. Toyotapartsdeal.com supposedly has a Toyota brand fuel pump for around $330 but there’s something about that website I don’t trust. The website will show you pictures of the part along with other parts that they don’t include and then sometimes the part number will have a notation under it, that says, “replaced by”, and then
give you a different part number. I can see why you went with the cheaper pump. What about this?

23221-66040 Genuine Toyota Fuel Pump

ToyotaPartsDeal.com offers the great deal for genuine Toyota parts 23221-66040 (2322166040) Fuel Pump for $330.80. All parts are backed by the Toyota's warranty.

www.toyotapartsdeal.com

 

[jerryb]

I think when Aisan gets their s*** together we'll see pumps again, 98-05 & 06-07.
I would guess the recall and the sell off have major impacts on what's going on right now, and for the last two years. That's my take anyway.
There isn't a car on the planet worth a 300+ fuel pump.
Read what the tacoma people are doing, they are a much larger pool of non available pump buyers.

 

[elhombre]

I know I am late to the thread here, but I wanted to add two things. With fuel injected engines, if the test fuel pressure is even just one psi below the spec, the fuel pump should be changed. The idea is that if a fuel pump at idle only is barely able to keep up with the minimal flow demand, it sure can't do it at heavy demand. Second, as for the crap getting in the fuel tank, it is a good practice to pass by any gas station that has a tanker truck off loading gas into the stations ground tanks. All that gas dropping into the underground tank stirs up all the sediment and contaminates that have accumulated over time, and they haven't had any period of time to resettle back to the bottom of the underground tank. Meaning the crap gets pumped into your gas tank. Just keep driving down the street to the next corner store to buy your Monster and fill up to avoid a possible tank of dirty gas.

 

[Les Summer]

I think when Aisan gets their s*** together we'll see pumps again, 98-05 & 06-07.
I would guess the recall and the sell off have major impacts on what's going on right now, and for the last two years. That's my take anyway.
There isn't a car on the planet worth a 300+ fuel pump.
Read what the tacoma people are doing, they are a much larger pool of non available pump buyers.

What pump do you suggest?

 

[jerryb]

naturally aspirated there's a reason the range is 38-44psig, and the ECU correct is +/-35%. Those are huge percentages.
I agree with what you said mostly. It's just more reasonable to expect/anticipate adequate PSI with the flow rate testing. That's what toyota wants you to do.
If they wanted you to look at pressure they would have put a sender somewhere and a techstream option for it.
Don't forget, the frp regulates flow, not the pump.

 

[2001LC]

I recommend, if need fuel pump this week. Buy Toyota OEM fuel pump w/sock, tank seal and filter. Best we replace the tank seal, removed while getting fuel pump out.
Toyota fuel pumps is either Denso/Toyota old stock. Or Toyota has sourced from new supplier. Toyota suppliers are held to a higher standard, to get and retain the contract. So OEM is "almost" always best!

 

[Les Summer]

I recommend, if need fuel pump this week. Buy Toyota OEM fuel pump w/sock, tank seal and filter. Best we replace the tank seal, removed while get fuel pump out.
Toyota fuel pumps is either be Denso/Toyota old stock. Or Toyota has sourced from new supplier. Toyota suppliers are held to a higher standard, to get and retain the contract.

The best dealer price i got was 474.00, just the pump. Now, there is a site called toyotapartsdeal.com that sells them, and they are like $330.00. Would you trust it? I'm not a big fan on anything less than OEM for a fuel pump.

 

[2001LC]

Try Decatur Toyota no shipping or tax..

 

[Les Summer]

Try Decatur Toyota no shipping or tax..

I checked it out. That's an amazing find... Thanks!

 

[McBodes]

@Iverano, I'll share what I found for the record. I couldn't find this info documented in one post so I'll post it here in hope it helps someone in 2023 and beyond:

The quick of it seems to be that the 3 below Denso part numbers I found are difficult to source, at least right now and even the last 2 years or so (according to other Mud posts). The reason seems to be, according to one relatively recent Mud post I found, that Denso was getting out of the business, even sold off that part of their business in pursuit of electric cars (which if true, further evidence's WEF type stuff is materializing). And/Or is being manufactured in china now (by the new owners of the product line?). Either way, mostly just not available on the websites and people even getting orders cancelled.

I'd be curious to hear what you experience.

Denso 950-0210 was ONLY? for the last 2005-2007 100 series. ~$130 (where listed) Don't know about strainer or fittings. (I have a 2004)
Denso 950-0107 Includes extra fittings AND the strainer ~$200 (where listed)
Denso 951-0003 Includes extra fittings no strainer ~$130 (where listed)

Toyota OEM 23221-66040 (an updated/new part number according to Amayama) ~$300 delivered to US and available don't know about strainer etc.

Both TYC's I ordered came in about a week for ~$40 shipped from Rock auto. I saw the Delphi for well over $150. Other lesser known likely made in china/questionable quality like the Delphi I pulled, everywhere in between but apparently available at least.

I did not come across the part number you mentioned. Please let us know what you find.

How is that TYC pump holding up? I’m tempted to go the same route with a spare for 10% the cost of OEM…

 

[nachocruiser]

So far so good. She's got 228.5k now with the TYC and going strong. She's mostly the family road trip ride so doesn't get driven all that much. Just drove 850 miles over the weekend, loaded up towing the pop up etc and no issues. For the price I think it's an easy choice. I carry the spare just in case and it would be an easy 'on trail' swap.

 

[McBodes]

So far so good. She's got 228.5k now with the TYC and going strong. She's mostly the family road trip ride so doesn't get driven all that much. Just drove 850 miles over the weekend, loaded up towing the pop up etc and no issues. For the price I think it's an easy choice. I carry the spare just in case and it would be an easy 'on trail' swap.

Thanks! I just ordered a couple of them.

 

[nachocruiser]

Well, I have bad news to report. If you followed the thread, the Denso pumps are no longer available so I bought two TYC pumps from rockauto for $15/each back in 2023. This way I would have a spare in the event of failure on our annual ~2k mile family road trips. The first TYC pump I installed has begun to fail at 12k miles.

Last time I had this fuel issue, I went ahead and installed a 'permanent' marshall fuel pressure gauge based on another mudders post. I highly recommend this mod. I recently got a P0420 code so took a look at my fuel pressure gauge. What I noticed is that it is making pressure when running, but like last time, not holding above 21psi for even a minute (test is 5 minutes) on shutdown. I did not get any lean condition DTC codes or the power drop under load that came with the code last time. If it were not for the gauge, I would not think I had an issue.

In spite of noticing this and having the spare TYC pump to throw in, I decided to risk it and do our ~2k mile trip with trailer in tow. We got through it with no issues but maybe a subtle feeling of power loss on climbs? P0420 was on the whole time as well.

Back home, I went through the manual and did the pulsation damper test and passed.
Ohmed the pump out and got .7ohms so that is a pass.
Fuel pressure running is about 42psi so that is a pass
only failure was the hold pressure test (leak down) dropped pretty much right away on shutdown

So could be leaky injectors but the pump is a relatively easy swap so I went for it. This time with a 'High Performance - increased flow rate' pump according to rockauto(keeping the 2nd TYC pump as my spare):

Autobest HP4251 $24 No filters/screens etc included, just the pump.

It ohms out new at .6ohm and now I'm passing all tests including leak down with flying colors so no leaky injectors right?

Last time I had this issue I bought a Toyota FPR, Pulsation damper,(related orings/gaskets for both of those) and a fuel filter, in case I would need them. I did not install any of those since the pump alone fixed the issue. Are these parts faulty and somehow causing my pump to fail premature? I don't think so but let me know if you think different.

Also, I wonder what the significance of the check valve in the pump holding pressure is?

Rig has 234k with rear slee bumper and a cheaper front bumper from I don't know who so a bit of weight. It's our family road trip car mostly so doesn't get driven too much except our two big trips per year of ~2k miles each pulling a 4.5k lb pop-up. I live in the CO mountains so climbs are a regular thing. As mentioned in previous posts, we bought it with 205k. It had a good maintenance history but no mention of fuel pump. I found a delphi pump in it when I did the first fuel pump swap so this thing is going through 'cheap' fuel pumps...

The goal of this thread for me has become to find an 'affordable' and reliable alternative to the Denso fuel pumps for our rigs that are no longer available. Amayama has a toyota fuel pump for $300+ which strikes me as a bit rich considering the Densos were in the $100 range.

Anyhow, I'm willing to be the guinea pig and hope to keep track of my results here finding a cheaper(more affordable) aftermarket fuel pump that lasts, let's say 100k miles and costs ~$100 or less.

I, and I'm sure others would appreciate it if you have recommendations, particularly backed by experience with a good 'affordable' option.

 

[ranma21]

I carry the Japan made HKT Fuel pump for the past 7 yrs, not a single complaint so far.

For Sale - HTK Japan Electric Fuel Pump for 93-05 Landcruiser LX450 LX470

Up for sales is a high quality HTK Japan made fuel pump for 70, 80 & 100 series landcruiser, It will fit 93-05 FZJ80 UZJ100 FZJ70 FZJ105 series landcruiser and Lexus LX450 LX470. $95 Shipped.

forum.ih8mud.com

 

[Mike NXP]

Sorry if I'm not following this all properly but isn't this the OEM fuel pump below? I looked up my truck and these results popped up on Partsouq and appropriate subs . Doesn't seem like throwing cheapy $15 fuel pumps in is a good solution for such an important part

 

[nachocruiser]

I carry the Japan made HKT Fuel pump for the past 7 yrs, not a single complaint so far.

For Sale - HTK Japan Electric Fuel Pump for 93-05 Landcruiser LX450 LX470

Up for sales is a high quality HTK Japan made fuel pump for 70, 80 & 100 series landcruiser, It will fit 93-05 FZJ80 UZJ100 FZJ70 FZJ105 series landcruiser and Lexus LX450 LX470. $95 Shipped.

forum.ih8mud.com

Thanks @ranma21. I had not heard of or seen this option. If this 'Autobest' pump fails, that looks like the best option to me.

Anybody else here have experience with this HKT?!

With Denso gone, none of the rockauto options sounded good so I figured I would try the cheap ones first. The most expensive rockauto pump was a Delphi at $135 which is what came out of this same 2004. Coming from China, a lot of times it's the same thing just repackaged was my thinking.

This option from Japan sounds promising and the price is reasonable assuming it will go the 100k or more.

Sorry if I'm not following this all properly but isn't this the OEM fuel pump below? I looked up my truck and these results popped up on Partsouq and appropriate subs . Doesn't seem like throwing cheapy $15 fuel pumps in is a good solution for such an important part

Your not wrong @Mike NXP. Just seems a bit pricey and I am all about OEM/Denso parts, but I got to say, I'm not too impressed with a few OEM things on our beloved cruisers compared to my 3rd gen 4runner with 325k miles now and 0 fuel pump changes. Still running original cv boots/axles too vs bearing repack every 30k miles...

I have a 2nd 2003 cruiser that came with great maintenance records and about 200k miles on the clock. It came with a record of fuel pump change at 190k miles. Both these cruisers have had clock spring replacements, door lock failures and one had a steering rack replacement, not to mention horrible integrated gps/stereo/climate control that is all but impossible to replace. Sorry, just venting about the 'little things' we deal with

Maybe I got lucky (and spoiled) in the process with my 4runner which has had none of those issues and even on original shocks(though they are ready for a replacement), but 2 factory Land Cruiser fuel pumps gone bad under 200k miles is not a great track record it seems to me. I have a 2nd 3rd gen 4runner with 170k on the clock and no record of fuel pump change either.

Tack to that a $300 price tag and I'm willing to roll the proverbial dice