Recent content by Cog

Old thread, I know. Same problem with my 2003 V8 full time 4wd. Transfer case was run for some time with no oil...the leak got me but I did not know it. Now it slips under a light load. Did you find a manual? Did you rebuild or replace it?

Update.. 4Lo working I'm both lucky and an idiot...read below. The codes, C1234 (I think) Open Center Diff and the Zero Point caused the motor to shut off after starting. I needed to get back to just the clunk so- Attempted to run the Zero Point calibration. Would not stick. Unplugged the...

Last SAGA After unplugging the actuator while the truck was running, VSC On and Off lights are solid, 4LO is solid, and the Diff Lock indicator solid. ODB said Zero Point Calibration needed and C1340, Open Circuit on Center Differential Lock. So I ran the Zero Point multiple times. Can't get...

Agree that this V8 TC should be toast. I'd estimate it was run with low or no oil in the TC for hundreds of miles. I really don't know. But Toyota build quality continues to amaze me. I'm confident the TC is not long for this world but it keeps running... QUICK UPDATE Performed the joint...

Great point, solve for the 4LO not engaging first. Copy that. I'll report back once I can get back underneath her.

Runnin' on E- 4LO does not work. But part of the odd symptom was when the drivetrain clunk was more pronounced, the 4LO dash light would flicker. Once I think it stayed on but of course I was driving as normal. Yes, for some time the TC was oil-less. Leaking through the actuator as noted...

Thanks Grumpy. I'm dumb enough to try it. I'll report back.

EXPERIMENT- Watching this incredible video on Toyota transfer cases https://www.youtube.com/watch?v=ESm0PPBkAQQ I'm wondering if the random "slip and clunk" under power is chipped tooth or chain link. What do you think about pulling the front driveshaft off the truck and test driving to see if...

Thanks, Dr. Any experience with rebuilding (possible?) vs. buying a used one? I might try to snake a horoscope into the housing via the fill bolt and see if I can see any damage. Thanks for weighing in. Every bit of insight helps me narrow down what to do next.

Reminder..Wild Speculation Welcome Please reply if you have some thoughts on this. I don't mind tearing into the actuator but I'd prefer to know if that's likely to fix it. Thanks!

My baby, with 251,000 miles, is perfect in every way. Well, except the seats...they are rough. But mechanically she's an angel. Until a month ago, I noted the dreaded clunk somewhere in the drivetrain while under load (acceleration). At first, it was just a few clunks and the feeling that the...

Back on the road Final entry to the drama. First, my 4Runner is a beast. I probably drove her for 15 minutes pegged in the red. And yet, she lives! Ordered the OEM fan clutch. I've got a full OEM timing belt kit (water pump, etc) but will have to attack that later. For speed, I had already...

I live by that saying. The timing belt, water pump and clutch are now on my list to do while the radiator is out. Thanks again for the help.

I spoke too soon....small radiator leak HanSolo, I'm taking your advice. I made about 50 minutes into a 3 hour drive and white steam billows from under the hood. Got out and was able to observe the source (vs. stuck in the car with my elderly mom). Seems to be originating in the core down...

HanSolo. I appreciate the input. I went through all the hoses I could get to and they all appear to be in great shape. No sticking or tearing when I removed them for this project. Is the radiator replacement a function of leaking or it being less efficient due to build up? And good point on the...