Help with Rear End!

So here is the deal. My truck is in good shape and has no rust which is great but it had been hit square in the rear passenger wheel. So the Previous Owner swapped rear ends. What I’m finding is my Speedo and ODO are not working and it seems like it has to do with the rear ABS/Speed sensors not being hooked up. P.O. claims the rear end came out of an 05 (which should be ABS) however I have looked it over and I just do not see the area to put new sensors on so I’m fairly certain I have a non ABS rear end. So my question is can I drill it to place a sensor? Is there a way to add them or by pass the rear sensors to tell the ECU all is well so my stuff starts working? Or do I have to source a new rear end? Thanks I’m advance.

 

You can disable abs. @whodatschrome has write up in his build thread https://www.tundras.com/threads/tacoed-tundra-project.130491/

 

Don't forget, some years use the ABS/WS sensors to feed info to the speedo. I want to say it's my years ('05-'06), so your suggestion may not work for OP. whodats is running '00-'04.

 

See that’s my issue, from what research I have done shows that all 4 wheels send a signal to ABS sensor then to ECU which averages them to put current speed on dash. So with my rear sensors disconnected I have no speed/odo. So I really want to fix it. I would just rather not swap an axle?

 

I'm not familiar with the 05-06 ABS trucks, so i can't say for sure, but here are my findings for the 2000-2004 ABS and non-ABS trucks...

-the outer axle flanges are different from the abs and non-abs. The abs axle housing has a large raised flanged area with a hole in it for the abs sensors to push into. There's no real feasible way in a 1st world country to modify a non-abs housing to have that raised abs flange area.

-the abs axle shafts have an abs tone ring pressed onto them. The non-abs shafts only have a standard spacer ring pressed on.

-yes, i did delete the abs from my 2004 abs truck. I did have to retain the rear abs sensors (but not the front) because they provide a speed signal to the ABS pump's module. I unscrewed the abs module from the abs pump, BUT i had to still keep the module plugged into the engine harness in order to have a working speedometer!

-short answer is that you will need to find a complete ABS axle housing assembly. And make sure it's out of a double cab truck, and not a single or access cab! Also make sure the ring and pinion gear ratio matches what you currently have up front.

 

Sooo anybody near OH have a rear axle from an 06 double cab that wants one with no ABS lol.

 

Honestly, best bet? Www.car-part.com and try to find another '05-'06 double cab. Just make sure the gear ratio is correct. @whodatschrome it's you that has that handy dandy list of what ratios are across the years/cab types/trims right?

You're 4x4 so need to ensure rear ratio matches front. Can't use Sequoia, they have rear disc. I suppose if you wanted the pain of migrating guts over you could, but I'd honestly buy a complete axle. Be sure to get the full parking brake assembly and adjust the rear brakes properly, since functioning p-brake assembly is vital to proper braking, and poorly adjusted rears will leave you with soft pedal.

 

So there is no way to get the speedo or ODO back without those sensors? Also shouldn’t the Odometer still be logging into the ecu like stored data?

 

I agree with getting one from car-part.com. If you search around enough you should be able to find one pretty cheap.
If you do replace the rear for another one make sure the gear ratio is correct, never trust that who your buying it from is correct, verify it yourself or the first time you put it in 4WD shits gonna blow up.
To find out the gear ratio on a unit that's not installed make sure it's off the ground, if it's a drum brake rear end mark a spot on the backing plate and drum. Then mark the pinion flange (round disc that the driveshaft bolts to) and the differential housing. Rotate the axle one rotation until your lines match back up. Count how many times the pinion flange goes around. If it goes around 3 times and about 3/4 it's a 3.73, if it goes around 4 times and a little it's a 4.10, if it goes around 4 times and past 1/4 it's a 4.30. Do it several times to make sure.

 

Fair enough. Let me ask this question how difficult is putting in a sequoia rear end? Are they not the same mounting perches and such?

 

The Sequoia has a 5 link rear suspension. If you have all the tools and equipment, then it’s really easy to cut all the link brackets off, sand them smooth, then weld on new leaf spring perches. You should also install the Sequoia’s brake master cylinder and proportioning valve too. But after all of that, i have no idea what the Sequoia’s axle width is. I don’t think the juice would be worth the squeeze.

 

I’ve read that the double cabs have a wider axle housing than the access and single cabs, but i haven’t confirmed that for myself.

2000-2003
3.91 - V8, 4x4, auto trans
3.92 - V8, 4x2, auto trans
4.08 - V6, 4x2, auto trans or manual trans
4.10 - V6, 4x4, manual trans
4.30 - V6, 4x4, auto trans

2004, Regular Cab or Access Cab
3.91 - V8, 4x4, auto trans
3.92 - V8, 4x2, auto trans
4.08 - V6, 4x2, auto trans or manual trans
4.10 - V6, 4x4, manual trans
4.30 - V6, 4x4, auto trans

2004, Double Cab
4.08 - V8, 4x2, auto trans
4.10 - V8, 4x4, auto trans

2005-2006
3.77 - V6, 4x2, auto trans
3.91 - V8, 4x4, auto trans
3.92 - V8, 4x2, auto trans
4.08 - V6, 4x2, manual trans

 

Definitely no, but theoretically yes?
It might be a theoretical yes if you swap out the existing transfer case tailshaft for an early (2000-2002) non-abs T case tailshaft...along with swapping in the matching 00-02 T case speedo sensor and sub harness. From there, who knows how the sub harness would interface with even a 2004 and earlier truck. I’d feel confident in saying that it would be impossible in a 2005-06 truck...unless you started swapping around 2000-02 engine harness, cab harness, speedo unit, ECU into your 2006 truck. Then it would also leave most of your truck’s other electrical options non functional.

Long story short, no it won’t be possible. You’re only option is to get an abs DC axle housing!

At least for the 2000-04 trucks, the odometer is separate from the ECU. At least the LCD odometer screen is. The odometer memory is stored in the speedometer unit (stored inside the LCD screen assembly to be specific).

 

So as I am looking for a rear end, I have read mixed info. Will a whole Axle assembly for an 06 Acess Cab bolt into my double cab or are they actually different lengths

 

Rear track 64.9 vs 67.3 inches

 

So maybe dumb question. But can it be used would I just need wheel spacers or is it not that simple it just seems the AC rear ends are a lot cheaper?

 

I wouldn't be surprised if spring perches are in different locations. I've also noticed some of the DC guys lack the LSPV provisions/assembly that the RC/AC trucks have.

 

Man, this is just a suggestion, but what about a Android smart screen with GPS hooked up for MPH. IT will cost you $200 tops and u can run all types of fancy applications, cameras, prob even pair it w bluetooth obd2 tool to have all the info on it. Thats what a lot of the old 90's cars are switching too. Kinda like the mxpro gauge view. Lot less work.

 

Something like this:

$60 Wireless Protable Carplay & Android Auto,Car Play Box+Backup Camera,9.26'' Portable Car Stereo with Phone Mirroring, Carplay Screen with AUX/FM/Bluetooth,Voice Control Suitable for All Car Models

http://amazon.com/Wireless-Protable...5014&hvpos=&hvnetw=g&hvrand=70405519619104027

 

I thought about that. If I could confirm the mileage is stored in the ECU and could display I would pull the trigger I did get a cheaper gps speedo/ODO that will at least track moving forward.

 

You know, i would google that about ecu and mileage storage. Does it having tining belt service stickers? If so date,? I think that yota dealership big scan tool can verify mileage on 97-OBDII , but also know varois manufacturers clusters had it stored on Custer ROM. but slso heard thise are gone and thet have new tablet size ones. I can check for you tmrw.

Update 1st gen mileade stored on cluster ROM, whats current displayed mileage? I WOULD ROLL with tablet, you can get all types of cool stuff that will look way more modern and you can tap into rpm ect. Check out the *FuelTech china rip off screens. Multiple configurations and cme ready to wire in. Then send you cluster rom off to be repaired to find out at what mileage it stopped tcking. Lmk if you need help sourcing digital dash.

 

I have personally hooked these up to record mileafe off front speed sensor/ aka ABS SENSOR. EASY AS two taps. Ignore random caps, i drop my androd all the time lol.

 

It's not gonna add mileage if the speedometer isn't moving. Truck thinks it's sitting still.

I'm betting that rear end is out of an 04 DC w/o ABS. All 05/06s should have that wheel speed sensor hole, as that's what runs the speedo.

 

From what I read ABS was standard after 03. So might be older than that. I know for sure when it was purchased from auction things were working because it had been hit in the rear end at 201k and change. When I hoped in the the truck the first time it read 202500. Previous owner is the one who put rear wind in and only owned since late April so I’m guessing mileage still pretty close to the frozen Odometer. @BluegrapeVr6 what have you used to hook up and read front speed sensors for OOD/Speedo?

 

The DC didn't show up till 04, and was more 00-03 based, just 4 doors. 05 switched to the 5 spd trans and wheel speed sensors. I don't see anything in the brochure that says ABS was standard in 04, but I could be wrong.

 

Well then you may be right which probably means it’s not even the same gear ratio good thing I don’t need 4x4 in the summer time. I think my best move is find the correct rearmed!. But I still want to hear more about this digital readout cluster

 

Look around on Amazon, it really about how much you want to spend. If it has over 200k ...are you going to keep it. I would just service by recording mileage on phone per day X months. Budget is your limit w dash stuff, there are hundreds to choose from, look on ebay and i would read up on forums about good china beans ( oxymoron)

 

Or just grab drivertrain from junked Tundra. I pretty much installed two new diffs ( WITH A LITTLE HELP) in 50 hours ( had to halfway replace my cores into wrecked truck), so you could do it. Id give it two weeks now that im reflecting on it so u dont get caught w premiums due to time constraints. You will need backlash gauge, micrometer, tq wrench, 3/8, 1/2" , bentley +FSM/FORUMA, best bet is to find a donor truck.

 

I found a good rear end complete with the sensors and all I’m debating going to get it this weekend actually.

 

Well that rear end sold. So I think I am going to find an access cab and just use spacers. Does anyone see issues there. From what I know the spring perches are in the same spot.