1996 Hyundai Sonata - Answered Questions & Fixed issues

the door mechanisms give trouble need to eyeball the internals and inspect the internal works of the door from drivers side remove the passenger seat undo the door card as best without ripping it apart if damage is possible source the same colour door card

Immobilizer is built in. If no lights are coming on at all that is not the immobilizer. Check your battery, fuses and ground wires first. If that is good i would suspect the ignition switch (not the ignition lock!)

TURN YOUR HEADLIGHT ON, GO UNDER HOOK TO BATTERY AND WIGGLE TERMINALS, IF LIGHT COME BAD CONNECTION REPAIR, IF NOTHING HAPPENS COULD BE BAD BATTERY CHECK FOR VOLTAGE WITH VOLT METER SHOULD HAVE 12.6 VOLTS

timing or tune up is needed. I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_677dced97ad9bddf

Hi, I'm trying to find the same thing but for a 1998 Sonata EF. :( The internet is hopeless too! They keep saying their not available anymore from 96 to 98. Goodluck if you find one.

Did you do a compression test before and after ?

The shifter check it or the sensor on the transmission

You can have your mechanic pull the valve cover. Loosen the bolts that hold the cam(s) in place and do a compression test. If one or more cylinders is low on compression the motor is junk. If the compression test is fine reinstall the cam and replace the timing belt and you should be good to go. I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

try to adjust the odometer with auto mileage correction tool.

sound like a bad switch the operation goes threw both switches for operation

The firing order diagram you requested is below. Best of luck and thank you for using Fixya!
Greg

1996 Hyundai Sonata 2.0L Firing Order



Firing Order: 1-3-4-2

Hi.

If this happens after heavy breaking there is probably something out of place.

Check all vacuum hoses and check electrical connections to parts and sensor that determines the amounts of air and fuel in the mixture. The engine is revving up because the incorrect mixture is being sprayed through the injectors.

Do a code scanning. If an OBDII code is stored in ECU, that may help locating the problem.

Check thoroughly vacuum system. Check hoses and look for leaks spraying carb cleaner on vacuum hose and observing if number of engine revolutions is affected when you spray each hose (you will need someone checking revs from instrument panel, otherwise use a pressure gauge in vacuum hoses). Pay particular attention to vacuum hoses connected to PCV, EGR, and to brake booster vacuum hoses near to PCV valve.

Make sure that you have checked throttle body, accelerator control and even the pedal.

Check electrical connectors and valves' good working of the parts below. Such parts concur in determining the amount of fuel/air in the mixture to be injected:

1) Idle air control valve, wiring and solenoid, also called IAC valve. The IAC determines amount of air to be injected when idle. Check this if problem occurs mostly at idle. Check volts at solenoid, connectors, see if valve is opening and check vacuum hoses connected to IAC system.
2) O2 Sensors located in the exhaust system. Check connectors. If the O2 sensors are the problem you get a DTC (OBDII error code).
3) Air filter and air intake. Check that parts are in their place.
4) MAF sensor and IAT sensor located in the air intake. Check connectors and clean the sensors.
5) Throttle position sensor. Mounted on the throttle body. Check connector. The TPS can also be tested using a volt meter.
6) Check EGR. EGR system determines amount of recirculated gas to be injected with mixture. Defective EGR results in the engine revving up and down on its own or surging. Check volts at connectors, see if valve is opening and check vacuum hoses connected to the system.
7) Check PCV valve and system similarly to what you did with EGR. PCV valve collects and recirculated gases from engine combustion that slip through the piston rings. Its symptoms when faulty are similar to those of EGR. Check this and the EGR with particular attention.
8) Check the air intake hose connected to the throttle.

Make sure that the problems are not in consequence of wrong shifting or misfire. In that case you will need to check different parts. The considerations above apply if the engine is surging and revving up and down as described in your comment.

Check with particular attention PCV, EGR and the vacuum hoses near to such valve. If this model uses a brake booster connected to vacuum near PCV (it should), that may be the cause for the problem.

Regards.

Ginko

COULD BE FOULED SPARK PLUGS,CLEAN FUEL INJECTORS,POUR FUEL INJECTOR CLEANER IN FULL FUEL TANK OF GAS.CHANGE FUEL FILTER SEE WHAT HAPPENS.

Look for two bolts a the bottom of the panel. One for each side. If there are no bolts then they clip on you will have to pop them off start at the bottom.

Use a high pressure AIR jet so that the water is blown off and also use a hot air dryer on the coil.
It is possible that the wet coil has reduced the firing intensity and made the engine rough with a change of timing.

if you have had timing belt changed the timing is out 90 % of people get it wrong

Check fuel filter or change it.

SPEED SENSOR THAT GOES INTO TRANS ASSMBLY IS BAD,DEALER ITEIM

have you checked your fuel relay switch? or ECM fuse id check those two first thing