My 2004 hyundai santa fe sport 3.5l 3500cc v6 engine acted like it was seizing up late yesterday and now the engine is shaking so bad when i give it gas it vibrates the whole steering wheel

2001 Hyundai Santa Fe , S.Korean car,
no country told (you ) or what engine is there, gas/diesel and displacement (size)
the classic easter egg hunt, (it's not bad leave it be)
post problems first
check fuses and scan the PCM, obd2, usa scan tool if is USA>?


2.7L V6 - Gas <<< this? answering for only this ME (guessing engine) or 2.4L?
2001-2003 Hyundai Santa Fe - ECM - Hyundai

ECM. ELECTRONIC CONTROL UNIT. Engine Control Module.

Stock Code??? 3912138170 This part is compatible with 1 vehicle(s) matching 2001 Hyundai Santa Fe LX Sport Utility 5-Door 2.7L 2656CC V6 GAS DOHC Naturally Aspirated. and must be programmed before use. (new /used , replaced)

this

https://youtu.be/19Jl0c8wXeg

i hear folks had HVAC leak water to the ECU below and wrecked it.
super bad location that.

and this

https://www.justanswer.com/hyundai/6l5lk-hyundai-santa-fe-change-ecu-2003-hyundai-santa.html


the car may have
BCM, body.
PCM (TCM + ECM = PCM) SEEN ON NEVER CARS.
ECU/ECM,, BINGO?
TCM transmission
ABS
HVAC BRAIN BOX
AND MORE, (SEE SERVICE MANUAL FOR ALL THAT)

The Fuel Economy of the 2004 Hyundai Santa Fe is listed as being 16 mpg in the city and 22 mpg on the highway.----------------------------------------------------------------------------------
Digiprog3 Odometer Correction Tool

First replace the catalytic converter. it is clogging up.. this may take of the #3 misfire. Most likely the #3 coil pack is bad.

The VID # at the bottom of winshield on the drivers side. The 8th digit is the type of engine.

B = 2.4 DOHC
D = 2.7 V6
E = 3.5 V6

it is probably going into a fail safe mode, get it to a dealer and have it scanned for dtc's

For the 2004 Hyundai Santa Fe:
I do not know if you have the 2.4L DOHC In-Line 4-Cylinder, 2.7L DOHC V6, or the 3.5L DOHC V6 Engine; however the Link below has all three Diagrams.

Click on the following: direct, free Link. It has the Belt Diagrams for your 2004 Hyundai Santa Fe. It also has very helpful Instructions and Directional Diagrams.

Let me know if this helped...
http://www.2carpros.com/car_repair_information/year/2004/make/hyundai/model/santa_fe/2004_hyundai_santa_fe_drive_belt_routing_diagram.htm

dear friend-before you even look at the gearbox,have a look at the TPS sensor,as this sensor acts on information from various other sensors and can affect
the gear changing pattern to its information.

If your Santa Fe has a V6 engine 2.7L , it sounds like you have an ignition break down happening. You will need to renew all the ignition wires and check the two coils also for arcing .