Motor 1uz vvti problems. Jul 20, 2006 · I've been a huge supporter and still am of the 1uz-fe engines for over 10 years now, and am still amazed today by how durable these little V8 engines are. This 4-liter engine replaced the old Toyota 5V. . 0L Engine (1989-2002 Lexus LS 400, Toyota Crown). I stop short of a start, and again wait for the circuit opening relay to shut off the fuel pump. Aug 22, 2007 · Try again, engine will almost start, but will be rough as guts. Complete specs, features, oil, common problems, longevity. it will not start unless ya foot is on the gas pedal and once ya have got it started Jul 11, 2008 · if I asume correct the lexus engine uses the oilfeed via the block for the whole head including the VVT, which is operated by a selonoid in the head itself like the 4age 20v. being have issues with my 1uz starting and idling have so far spent 2 full days on this problem so far google has been searched non stop. I've been going through all the pre-first start setup and tests, including running the injector test on all 8 injectors. Nov 17, 2024 · The 4. Main characteristics of the engine Toyota 1UZ-FE Feb 3, 2016 · Toyota 1UZ-FE engine reliability, problems and repair The engine 1UZ is the founder of Toyota UZ (included 2UZ and 3UZ). Jan 7, 2012 · hi all hope everyone had a awesome break over the new year etc. Jan 28, 2008 · I didn't take it to a specialty shop, but I told them what I was told (from this forum) that the 1UZ-FE was a non-interference motor. There are two generations of the engine: 1989 without phase control and 1997 with VVT-i system. Jun 4, 2025 · Explore common Toyota VVTI engine problems, owner feedback, statistics, and recall information to keep your vehicle running smoothly. Both of them gained reputation the one of the most reliable Toyota engines with huge motor potential. However, as the years fly by other larger and more effecient engines over shadow the older 1uz-fe's in comparison. Learn how to fix these problems here. In-depth review of the 1UZ-FE 4. 0-liter V8 engine Toyota 1UZ-FE was assembled at the Tahara plant from 1989 to 2004 and was installed in the most powerful rear-wheel drive models of the Japanese concern at that time. problem is the oilfeed from the block to the heads seems to differ in location in vvt heads vs non vvt heads. Feb 20, 2025 · The 1UZ engine is reliable but has common issues like oil leaks, timing belt wear, and ignition coil failure. Anyway, the timing belt was replaced along with my water pump. It appeared in 1989 and intended for the largest models of Toyota and Lexus. Apr 27, 2023 · While the 1UZ-FE is a quality engine with very few innate problems, there are some areas that need special attention. Sep 17, 2023 · I have a 1UZ VVTI with a G4X Xtreme and a harness from Panic Wire. Mar 4, 2010 · Thermactor, unless you're driving a VVTi motor or you've put some wild cams in your motor, you should be OK? The early 1UZ's are non-interference (stock), and the later ones (VVTi) are interference motors. Aug 18, 2023 · I have a 1st gen 1uz I rebuilt that I recently swapped into my 1992 Toyota pickup and I am having some issues now keeping the engine running and not holding an idle. Since the timing belt drives not only the camshafts but also auxiliary components like the water pump and VVT-i components, it is extremely important to keep up with timing belt maintenance. This is my take. utn ttenu nleblfx qjphxa htty dljh ersijo lmnxd ataps axwjf