Possible transmission issue??

[kcjaz]

I’ve noticed a weird knocking noise that I can also “feel” like I’ve driven over a bump or something. The noise seems to be under the truck. I noticed it while driving on a the highway. It seems to randomly happen but maybe more climbing grade. It almost sounds like a loose u-joint but they seem ok.

The tranny is a newly installed Toyota reman. I’m going to take it to the dealer to check out but thought i’d Query the forum to see if anyone had any insight.

 

[gaijin]

I’ve noticed a weird knocking noise that I can also “feel” like I’ve driven over a bump or something. The noise seems to be under the truck. I noticed it while driving on a the highway. It seems to randomly happen but maybe more climbing grade. It almost sounds like a loose u-joint but they seem ok.

The tranny is a newly installed Toyota reman. I’m going to take it to the dealer to check out but thought i’d Query the forum to see if anyone had any insight.

My guess is it probably has something to do with this: Your Big Accident

Your best bet is to take it back to the Toyota dealership that installed the remanufactured transmission and have them evaluate it.

HTH

 

[TonyP]

I don't mean to sound like a prick but; with a lot of these threads they say there's an issue while their rig is still under warranty or just had work done.
Go to the servicing shops first.

 

[kcjaz]

I will take it back to the dealer. I’m currently 200 miles from home and am planning on driving home tomorrow. Noticed this today.

 

[kcjaz]

So we made it home with it getting progressively worse. At about 20 miles out 4LO, TRAC, and check engine light lite up. I had been thinking aught to get a code reader but hadn’t actually done it.

Good news is that it is not anything transmission related. It was a cracked spark plug causing an engine misfire. I’ve had misfires in other vehicles and they sure didn’t feel the same way. This felt like I was sitting on it.

I don’t get the 4LO light. Basically an unrelated thing disabled 4LO. I didn’t need it but what if I had? Stupid.

Ordering my code scanner now...

 

[bloc]

Basically an unrelated thing disabled 4LO. I didn’t need it but what if I had? Stupid.

To me this is the biggest mistake in the 200’s design.

 

[Markuson]

To me this is the biggest mistake in the 200’s design.

Completely agree.

You could be out in the total boonies...desperately needing 4Lo to return home...and some stupid evap code someone doesn't know how to clear could prevent them from using 4Lo. Totally ridiculous as a default, disabling response to nearly ANY fault.

The worst part of it is...your 4Lo mechanisms are usually perfectly FINE and dandy.
But without some electrical intervention or code clearing, it still keeps you out.
Come on, Mr. T. -Your reputation calls for better.

 

[bloc]

Completely agree.

You could be out in the total boonies...desperately needing 4Lo to return home...and some stupid evap code someone doesn't know how to clear could prevent them from using 4Lo. Totally ridiculous as a default, disabling response to nearly ANY fault.

The worst part of it is...your 4Lo mechanisms are usually perfectly FINE and dandy.
But without some electrical intervention or code clearing, it still keeps you out.
Come on, Mr. T. -Your reputation calls for better.

Which makes the case for having one of the compact bluetooth obd modules to clear codes. Probably won’t work all the time but in most cases it’ll work long enough to get you into 4lo.

I’m just assuming it’ll stay in 4lo once you get it there.. haven’t researched that part of this yet.

 

[kcjaz]

Anyone got a recommendation on a Bluetooth scanner and good iPhone app? Clearing codes would be great though I suspect in my case above the 4LO would keep getting disabled as the root cause (dead spark plug) would still exist until it got replaced.

 

[bloc]

The question is once you get it into 4Lo will it stay there? if so your bad plug isn't that big of a deal assuming you don't need to go back and forth between hi and lo a lot.

I used a Kiwi 3 and obdcardoctor successfully on different vehicles for a while. Just got a carista module ($20) and a month of the pro app ($9.. or $39/year) which does mostly the same thing.. BUT.. it adds the ability to program TPMS transmitter codes into the car if you already have said codes. It also allows some customization stuff.. but it's far from comprehensive. I can't even tell yet whether it'll do basic readout stuff like coolant temp, etc. The TPMS was important to me though. Would work great for people looking to switch between winter and summer wheel sets.

Note that most of these will only reset an engine Light. AFAIK they won't touch transmission, SRS, ABS, TCS, etc codes.

 

[Cruisin911]

Anyone got a recommendation on a Bluetooth scanner and good iPhone app? Clearing codes would be great though I suspect in my case above the 4LO would keep getting disabled as the root cause (dead spark plug) would still exist until it got replaced.

I have an ELM327 device that works fine. It'll read all the codes for you and tell you what each code means. If I did it over, i'd just buy the "blue driver" OBD2 tool. It'll read your abs modules, traction control, airbags, etc... $100 and you should be good. Just had to use mine for the first time on the LC when my air injection system decided to take a dump.

 

[kcjaz]

Thanks guys. Looking at these things, what I think would be really cool would be all the OBD monitoring and code reading functionality built into the OEM screen in the dash. Wonder if you could run an OBD phone app through Entune?