2002 Hyundai XG350 Error Codes P1191, p1193 & P0446

P1193 Hyundai ETS Limp Home Low Rpm BMW Loose Vacuum Hose P1191 P1193 Now what vehicle do you have ? Hyundai Check Engine Light Codes

Have you put each cylinder at top dead center on compression
stroke & done a cylinder leak down test BEFORE ever starting
the motor,& is the timing belt still on & timed correctly?

Compression is relative to many things & not much use these
days,you got it or you don't

timing belt should be replace at 90000 miles and the spark plugs at 120000 miles.

replace your radiator cap

I have 2 questions

Why would you not check for codes & make the proper
repair within a week of any check light,that is what is required

You say been on awhile,the vehicle had a fault code & system
problem & still does

Why would you have a timing belt & water pump installed &
any repair shop return your vehicle with a check light on

What sort of shop is that to return an undiagnosed vehicle

Neither you nor the shop seen to have any interest in
these check lights Why is that?

The engine valves are not being opened and closed properly due to the worn gear and missing teeth. Needs to be replaced.

codes say misfirings--but I thinc its fuel rail pressure from 1st 2 codes--call napa and confirm--dont replace anymore things till u know issue--fuel pressure regulator or pump shud be tested--also idle air motor may not be opening-they wear

OK!... check engine lignt came on AGAIN!...what code(s) were there? (20 miles doesn't tell me anything).

It is common practice to replace the water pump when replacing the water pump also. If the timing belt has recently been replaced than it would not be necessary to replace it again. If the belt is original than it makes perfect sense to replace it when the water pump is replaced as the timing belt will need to be removed in order to replace the water pump. There is no additional labor coast just the additional parts cost of the timing belt.

When it is done you shouldn't have to worry about it for the next 100,000 miles or so.

If you don't replace it when you have the water pump replaced than down the road when the timing belt is due for service you will have to pay for all the labor costs again to replace the water pump.

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

Timing belts are typically only used on overhead camshaft engines. Timing belts are used to synchronize the crankshaft with the camshaft, similar to a timing chain on an overhead valve (pushrod) engine. Unlike a timing belt, a timing chain will normally last the life of the engine without needing service or replacement. Timing belts use raised teeth to mesh with sprockets to operate the valvetrain of an overhead camshaft engine.

Whenever a vehicle with an unknown service history comes into your repair facility or is recently purchased, here are some points that should be asked to help prevent costly engine damage:

* Does the owner know if, or when the belt was replaced-
* If the vehicle purchased is used, or the condition and mileage of the last timing belt replacement are unknown, it is recommended to inspect, replace or at least inform the owner that the vehicle is equipped with a timing belt.
* Note the mileage of the vehicle. The average replacement interval for a timing belt is approximately 60,000 miles (96,000 km).


Inspection

Inspect the drive belt for signs of glazing or cracking. A glazed belt will be perfectly smooth from slippage, while a good belt will have a slight texture of fabric visible. Cracks will usually start at the inner edge of the belt and run outward. All worn or damaged drive belts should be replaced immediately.

Removal & Installation

1. Raise and support the vehicle.
2. Remove the engine splash shield.
3. Rotate the drive belt tensioner clockwise to release the drive belt tension.
4. Remove the drive belt from the alternator.
5. Slowly release the drive belt tensioner.
6. Remove the drive belt from the accessory drive pulleys.

Fig. Accessory drive belt routing - 2.4L engines

To install:

1. Install the drive belt to the accessory drive pulley.
2. Rotate the drive belt tensioner clockwise.
3. Install the drive belt to the alternator.
4. Ensure the drive belt is properly aligned and seated into the grooves of the accessory drive pulleys.
5. Slowly release the drive belt tensioner
6. Install the engine splash shield.
7. Lower the vehicle.


Hope helps.