How to Tell if Mileage Has Been Rolled Back / Other Issues

shinsain

New member
Hi all, this is my first T4R (prior Land Cruiser guy). I picked up an 07 Sport w/ V8 and full-time 4WD with 43,xxx miles on it about a month ago from a dealer in Washington State.

I was looking at a Land Cruiser when my wife said "Have you ever thought about a 4Runner?" The guy had like 10 on the lot, this one with 43k on it was, in my mind, a great find, especially when compared to Land Cruiser prices, so I bought it.

I didn't have much time to have it looked at/looked over thoroughly other than myself, and it looked and ran solid. A few days went by when I noticed a clicking from the passenger's side of the rig, which I assumed was an exhaust leak. I also noticed something odd in the brakes, like I have a possible sticky piston (kind of a "clunk" after the fact, when I let off the brakes a few seconds after the pedal is released).

I took the rig to a local exhaust place and they confirmed I've got a couple leaks in it. The muffler had been [badly] replaced, as well as a ton of corrosion/rust, and either a cracked exhaust manifold or the gasket, which is causing the clicking.

What got ME personally, however, and kind of amazed the exhaust guy is the shape of the underbody. I know the car is from the east coast, but -- let me put it this way -- it simply doesn't look like a 43k Toyota, even from the east coast.

So my question is whether anyone has any clue as to how I can figure out whether the mileage has been tampered with and/or reset? I'm sure it would be an ECU/ECM reflash, but would the data or some record be hidden in the ECU/ECM data somewhere if they did? How about if they simply replaced the ECM with a different one? Any way to verify that the ECM in the rig did NOT originally come with it?

I guess I should start with the Carfax and see if there are any anomalies there first. But I'm thinking swapped vins, swapped ECMs, reflashed ECMs, etc.

I mean, maybe this rig was basically parked in the Boston harbor or something because they guy had a hard time finding parking where he lived, I have no clue. But short of that, the underside of this rig definitely does NOT scream 43k miles to me, so I'm having a hard time reconciling the issue.

Keep in mind, however, that the body and interior are absolutely mint -- so maybe I'm blowing this whole thing out of proportion? I'm not sure.

Any help would be appreciated, thanks all. I really love this rig, but I can't afford a lemon right now. This was supposed to be the "no problem" rig for the next ten years while my wife and I have kids and stuff. Now I'm a bit worried.
 
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Go the dealer and have the service department run the VIN for service records.

Alternatively you can run CarFax and AutoCheck to check their records too.

If it's from the East Coast, around salt water, lots of water, or a northern climate that has snow and salt was used on the roads, you will see corrosion. It's horrible on the brake calipers too.

The exhaust manifold leak was common on the V8s. However, a muffler being replaced at that mileage?....

Good luck.
 
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Yeah, I get seeing corrosion from the East Coast. I think that's the issue with the brakes as well. Not sure yet.

But, the muffler was definitely replaced (with a crappy replacement and a very poor weld job done, at that) already, and the rest of the exhaust is in seriously bad shape.

It simply doesn't match to a 43k mile rig?

I looked up a bit on the clicking and read up on the V8s from those years, so they get a pass on the exhaust manifold issue, but the rest of this is what is throwing me.
 
So after getting the Carfax, I looked through it and it seems to match up I guess.

The only other owner had it serviced at the Toyota dealership where they bought it the entire time they owned it. I called the dealership regarding one of the maintenance actions involving a PCM/ECU/ECM reprogram and he said it was related to a recall.

As far as I can tell it was actually fairly well taken care of, I guess. It just seems odd. It did come from New York, about 40 miles north of NYC. Winters there are so-so, but they use salt on the roads (used to live on the East Coast) so I guess that's it...

Apparently I simply have never had a clue as to just how bad that stuff can get? Not sure.
 

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