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4

The 3.3(?) from the Nissan wouldn't fit, it's mounted longitudinal, where as the Toyota engine is transverse. You'd have to either lengthen the front clip or find a way to mount the Nissan engine to the Toyota transmission. Not including other mounting and electrical issues. In short it'd be cheaper to buy a used Toyota engine assuming it's either a 3.0 or ...


4

I say "no". Do you live in a place that requires an emissions (no CEL check-engine light) inspection? And would you need same by August? P0420 is what is referred to a "Catalytic Converter Efficiency". It is basically referring to how well the catalyst is converting hydrocarbons, carbon monoxide, and NOX. The P0420 code can be caused by a whole bunch of ...


4

Circling back to post the resolution. I was afraid that the block was cracked, but was hoping that it was the freeze plugs. A quick survey of mechanics that have worked on Nissans suggested there was about a 50/50 chance. Had to take it to 3 different shops, but finally got the tranny out and it was the freeze plugs after all. But once they fixed that and ...


4

It's been a while since I've seen one of these engines. IIRC There's a water pipe that runs through the engine V and connects to the heater hose at the rear of the engine. One of these is true. The pipe is rotted The hose clamp failed The hose failed A freeze plug failed


4

It sounds like one of your main bearings is going out in your transmission, either at the front or the back of the transmission (probably the front). When your transmission is under load (clutch engaged, in gear), you won't necessarily hear it. Load can happen either during acceleration or deceleration. If you are really paying attention and it is loud ...


2

See what the spark plugs look like. Are they black and covered in soot/ Has oil leaked past the valve covers and soaked the plugs and wires/ are they wet and smell like gas? Spark plugs cans tell you a whole lot about your air/fuel mix and ignition. Id make sure to check fuel pressure too. make sure pressure doesn't drop too quickly after you turn off the ...


1

Long story short, yes and no. Yes: you will need custom engine mounts and most likely a custom ECU/BCM, assuming the entire powertrain even physically fits. It's not just the engine, you'll need the transmission too as it is unlikely that the Toyota transmission currently in the Highlander could be mated to a Nissan engine. And since the transmission is ...


1

First advise: never never add cold or even ambient temp coolant/water to an overheating engine; there is a very high risk of cracking the engine's head or block. Always turn it off, and let it cool itself down to say 60C minimum. You need then to find where the coolant is leaking: could be external or internal. External leaks are easy to spot: you will see ...


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It's the ECU. Somehow water or moisture invaded that region. You get the dashboard removed behind the cooling coil you'll locate the ECU metallic box, swap it out inspect it for any mineral buildup. If you find any head over to eBay/Amazon/craigslist/junk yard to find an ECU with less mileage and warranty.


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p0420 is caused by a damaged catalytic converter or O2 sensor. Since you said that the vehicle had a misfire code, they most likely drove with the light on because they figured they would sell it. The Catalytic Converter is a giant oven that stores and releases oxygen. Dumping fuel, from the misfire, destroys the honeycomb inside the cat which contains ...


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Since you already replaced the battery, one of the next reasonable plans of attack would be to see how dirty the air filter is or see if any of the spark plugs have been fouled. If you find the spark plugs or air filter are old, see if replacing them helps your issue. After those steps, I would also investigate the fuel pump and the fuel pump relay if there ...


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