My 93 camry 2.2L is making knocking sounds.

could be the oil pump has failed grinding sound then knocking sound could also be the timing is out or failing that something forren has got into the engine. check all these out and don't run the engine you are making the engine worse. if pump for the oil has gone and the engine has been run can mean a new engine. if timing belt has moved could be a new head will be needed. and pistons. failed oil pump does more damage in the long run as the hole engine needs oil.

The whining noise at start up is either the power steering pump (possibly low fluid, or faulty pump bearing), or possibly a belt on the engine. As for the knocking sound, that is hard to diagnose without actually hearing it, but based on the fact that you are hearing a whining sound at start up, which is indicative of a loose belt, I would start at the belt tensioner and make sure that it is applying the correct amount of pressure on the belts. If the belt tensioner is faulty, it can make a knocking sound. If that is not the issue, then it could simply be the lifters. With engine run time/miles on the engine, internal engine components, such as lifters, valves, bearings and any moving part, deteriorate from friction wear and heat.They have a tendency to make a knocking/rattling sound when they are building up pressure. When they build sufficient pressure, or the engine reaches operating temperature, this sound/noise will dissipate and become nonexistent. This can be remedied by changing the oil, and possibly the weight of the oil (5w30, 10w40, 20w50) depending on your driving habits , or conditions (Highway v/s City/Stop&Go, or short trips under 30 miles)

I hope that you have found this information to be useful, and if I can be of any further assistance, please let me know. Thank you for using fixya!

Depends if it is a no tolerance motor, which means bent valves.

It sounds rather like one of the drive shafts may have broken, but that is rare. What happens when you rev the engine in neutral, any knocking noises then? Does the oil pressure warning light come on? Is the check engine light on?

I'm trying to deduce whether the noise is in the engine or transmission somewhere.

Yes It could be the timing belt because as your car ages and the belt gets worn it starts to stretch. If your timing belt stretches enough your car will come out of time and that will cause a peck or knock. Another thing that you may look into if you have not had a tune up recently is spark plugs and wires. If you have worn plugs or wires it can also cause this to happen on occasion. I hope this helps you out.

Hello, With so little information, I would HAVE to assume that this is a rod knock. Does it make noise in neutral too? Or only when you drive it. Try to put it in neutral and step on the gas....Does it still knock? A rod knock means you need to rebuild that motor. A rod knock can usually happen from beating on the car or a timing belt slipped a couple of gears. I would check your engine oil level, not transmission. Because low levels of engine oil can create this sound too. Good luck and feel free to write me back with much more detail so that I can further assist you.

A 6 cylinder is an interference fit engine . Chances are you bent some valves IF the belt slipped.
Mounts usually don't make a vehicle shake as you described.
I believe the milage intervalfor timing belts is every 60 thousand.
Good luck

Hello, and welcome to FixYa. Yes, you can drive the car to the shop without fear of any internal engine damage.

Your engine is not an "interference' engine; your valves will not be damaged if the belt slips a tooth or two. In fact, any Toyota engine with a timing belt is a non-interference engine.

Thanks for choosing FixYa for assistance.

Hello, there are a couple of possible causes, it could be the water pump going out, it is driven from the timing belt, it may be a timing belt idler pulley or a worn drive belt tensioner

Did you run out of oil?