My hyundai elantra gl xd rear end motor knocking real loud

Here is the fuse box diagram, but the Elantra appears to have a rather funky battery fuse! Most vehicles have a main battery fuse but it is on the battery connector wire. If you put in a new ECM, was it programmed to the vehicle?

https://www.autozone.com/batteries-starting-and-charging/battery-fuse/hyundai/elantra-gt

Hyundai Elantra (XD; 2000-2006) fuses and relays

Fuse Box Diagrams https://fuse-box.info > hyundai > hyundai-elantra-xd-...

The fuse box is located on the driver's side of the instrument panel behind the cover. The location of the fuses in the passenger compartment: Hyundai Elantra ( ...

There are two fuses that cover the power windows, but if it is only one window, it is likely to be the switch, the wiring, or the motor on that particular door. An auto-electrician can diagnose. Videos may help.

Hyundai Elantra (XD; 2000-2006) fuses and relays

Fuse-Box.info https://fuse-box.info > hyundai > hyundai-elantra-xd-...

The fuse box is located on the driver's side of the instrument panel behind the cover. The location of the fuses in the passenger compartment: Hyundai Elantra ( ...

Edited the question into English with the correct make and model of the vehicle! :>D

Fuse box diagram. They use abbreviations
C/LIGHT 15A Cigarette lighter, Power outlet

Fuse Box Diagram Hyundai Elantra (XD; 2000-2006)

https://fuse-box.info > hyundai > hyundai-elantra-xd-2...

The fuse box is located on the driver's side of the instrument panel behind the cover. The location of the fuses in the passenger compartment: Hyundai Elantra (XD; ...

Fuse box Hyundai Elantra 2000-2006 - Fuses box diagram

https://fusesdiagram.com > hyundai > fuses-and-relay-h...

Fuses and relay Hyundai Elantra 2000-2006 ... For the Hyundai Elantra 2000, 2001, 2002, 2003, 2004, 2005, 2006 model year. Fuse box located. The fuse box for ...

Have a oil pressure test done on the engine to determine bearing failure. Have a compression test done to check for internal damage such as broken rings/pistons or overheated motor.. If the noise appears during acceleration then run the fault codes and look for a tuning problem or failed knock sensors

Poss engine mount?? Or poss exhaust off a rubber, put into reverse with bonnet lifted and get some one to look at the engine whilst u take up drive (handbrake on) see if you can get it to reproduce the fault & locate the noise

If you are not very mechanically inclined, timing belt removal and replacement is best left to a professional because misplacement of the crank and cam gear positions can cause the engine to run poorly or even cause damage upon starting the engine.

Look to see if the spring is broke!
That can be a bad thing to have happen.

if your engine is getting hot after only a few minutews of running and it is getting loud than you probably have a cylinder head gasket problem. you should take it to a shop and have it checked.

REAR BRAKE NOISE - SHOE AND LINING KIT
A shoe and lining kit is available for installation if an Elantra (XD) or Accent (LC)
equipped with rear drum brakes exhibits a chattering noise from the rear brakes when
the brakes are applied.

APPLICABLE VEHICLES:
• Accent (LC) and Elantra (XD) equipped with rear drum brakes and in the following
Production Date and VIN Range:
SERVICE PROCEDURE:
For further information, refer to the applicable Shop Manual.
Model Production Date Range VIN Range
ACCENT (LC) May 21,1999 - Dec. 28, 2005 ALL WITH DRUM
BRAKES.
ELANTRA(XD) June 30, 2000 - May 23, 2006 JOB#1-
KMHDN46016V363974

ACCENT SHOE & LINING
KIT
ASSEMBLY
58305-25A00 58305-25F00 7"(00MY - 05MY)
58305-25A10 58305-25F10 8"(00MY - 05MY)

replace the hatch struts. I'm assuming you're talking about the back hatch. There should be 1 or 2 struts (look like shock asborbers), they've probably gone bad.