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This could be a number of things like potentially a U-joint (https://www.yourmechanic.com/services/universal-joint-u-joint-replacement) or a bearing of some kind. Also, when suspension parts wear out they tend to make squeaking noises like this. I would suggest having a certified expert, like...

The question would need to be more specific. When changing out a motor with a used motor is hard enough to get the same year engine to work correct. You want to change out to use a more modern motor...

Hi, in this case, the PCV should be checked, it may be a little dirty. The elbow on the vacuum line at the throttle body may need to be replaced. Inspect for cracked vacuum line from the throttle body to...

The CV axle must be pushed into the differential until the circlip seats in the groove in the differential side gear. It sounds like you do not have the axle fully seated. Sometimes it can take some force to get...