Q: there is 3 faults p0706 & u1121-network & u1123-network

It sounds like you are experiencing several different issues. If the engine hasn't ran since the transmission fluid was added, I would drain and refill the engine with new oil. The issue with not cranking could be your battery. A...

Hi, from what you’ve described and the nature of the two codes, it sounds like a timing problem. It’s possible that the timing chain has stretched, the timing chain tensioner needs to be replaced, a timing chain guide has slipped...

Before having the cylinder head replaced, check the compression on all cylinders. What you are looking for is that the compression is 120 psi or more and the first puff of compression is half of the max puff of compression....

Hello - from your symptom description, you have a worn out or damaged Constant Velocity joints (https://www.yourmechanic.com/article/is-it-safe-to-drive-with-a-damaged-cv-joint) on one or both front axles. These worn joints allows excess "wobble" of the axle, especially when under power, creating the vibration you...

Hello, thank you for writing in. The vehicle needs to be inspected for several issues. First, the gas pedal controls the air flow into the engine, and the computer matches the amount of air to the amount of fuel needed....

What you are describing sounds like a failing CV joint (https://www.yourmechanic.com/services/axle-cv-shaft-assembly-replacement). A CV (Constant Velocity) joint is a shaft that connects the transmission to the wheels, essentially transferring the power from the drive train directly to the wheels. The CV...

If it is below freezing the coolant may be frozen if it did not have enough antifreeze in it or your thermostat froze shut or went bad can cause you to overheat without getting any heater. You will need to...

The first thing to check for in any drivability problem is air leaks. Any air that gets into the engine without being measured will lean out the system and cause problems. Look at all the rubber hoses and boots under...

The transmission from the 1996 model year of your truck will interchange IF the Tag IDs are identical. No other model years will work, only 1996-1997. If you are looking for a transmission, simply go to Car-Part.com (http://www.car-part.com) and you...