20 Most Recent 1991 Hyundai Sonata Questions & Answers

Some cars have a little plastic door/cap over the plug so look closely with light.

have the fuel pressure checked for failing pump or fuel regulator. Check maf sensor,air filter check purge solenoid /relay

Hi and welcome to FixYa!

Two things can cause this issue. It can be a faulty MAF (mass air flow) sensor or a bad TPS (throttle position sensor). They are both located on the throttle body and will surely need replacement if necessary.

Before doing the replacement, I strongly suggest that you have an engine scan from a reputable mechanic. During the diagnostic it will list the trouble codes and by then you'll know the exact part to replace. This is wiser than guessing.

Hope this helps and thank you for using FixYa! Have a good one!

Check under the hood behind the engine up close to the firewall. There should be a heater control valve there. This valve will have coolant hoses running to and from it. There will also be a lever-type part which operates the valve inside. The cable from inside should be hooked to this lever. If the cable has become unattached, the valve will not open and close properly. If this valve does not open, hot coolant cannot flow into the heater core. The result? No heat.

There is an mfi control relay instead of fuel pump relay, under left side of dash.

I'm not sure about the system in your car, but this sounds like it may be stuck in "limp home" mode, where then engine detects a fault and limits the cars speed and rpms to protect the engine from any further damage. I suggest you check the throttle body and you can find instructions online that will tell you how to tell if it is in limp home mode, and possibly how to fix it yourself., Although if limp home mode did engage, there may be a more serious problem with the car, and i suggest you have a mechanic look at it.

dear friend-i think you must start by checking the cam timing as you did work on the head before.timing could have jumped.keep me posted.

dear friend-as this crankshaft pulley is cast iron it is impossible that it could be bent so you will have to remove it and look for damage inside the pulley and on the crankshaft,if this is not repaired the fanbelt will never stay on.

did you check the relay?

Try behind kick panel on passenger side.

Same issue here, Sonata 2011 GLS and no key found (but more and more often at winter time) At dealership they said....its 100% computer problem, we can change it for $900 but we dont guarantee it will work normal again. Replaced 2032 battery 3 times made no difference so i thought its a power issue somewhere. i left my car on parking for 2 days for test. Opened door and saw it again...key not found. I connected a booster cable from running car to battery and left it for 10 min to charge. AFter 10 min i had a surprise...key found and car started easily. So its the Hyundai Factory car power design issue. Now i need to change my alternator to cover my theory. thx. ___

2013 Hyundai sonata my trunk just randomly pops open and it's not the fob key

There isn't one. Fuel Shut Off Switches are only on Fords.

Where is the fuel emergency shutoff switch located on a ...

JustAnswer https://www.justanswer.com > Hyundai Dec 20, 2022 - There is no fuel shutoff switch on the 2013 Sonata. If it will not start, there must be another issue, which could be fuel related but not a ... 1 answer · Top answer: Hello, my name is ***** ***** I'll be helping you with your Hyundai Sonata. I You have a fuel pump relay and that is it. Google year make model fuse box diagram ..

That is a strange issue, and this is the only thing I can find. https://www.hyundai-forums.com/threads/p2096-and-p2196-codes.670358/ https://www.google.com/search?q=Hyundai+Sonata+2.4+GDI+Codes+P2196+and+P2096 ..

tell what not well means tell also what car does parked and driving. running the engine. good and bad both mater. for sure. and not told pretend text box readers can not drive your car, sorry no test drivers here. idles too fast , how fast or too slow engine stalls engine power lacks engine misfires CEL engine lamp glows, running,

flashing CEL means too rich fuel and danger of CAT melting.! the owners manual covers that, fact. slow down for deep water, if engine sucks in water the engine will seize and and be total loss. bend rods , bent crank. my guess is O2 sensors soaked, so let them dry off. if water hit spark plugs higher, those now are wet and water conducts HV voltage spark well and shorts out the spark plugs, so get those dry. learn to slow to A crawl if water goes deeper than 1 inch. or buy a tall 4wD jeep. like my Wrangler. I can do 20" of water slow. I have even forded streams. worst case is engine wrecked, best case dry it out, or wait 24hours before posting here.

no year old some have no fuse, modern cars the BCM runs the starter (key line) The BCM may have relay to starter the BCM has fuses. The BCM on some newer cars use powerful transistor run run many things now. as in look ma' no relays. or way less for sure. no year car told. how sad is that.? no year, no country ,no engine told no joy.

air bags SRS it needs pro,. help get a shop fix it and do not play with SRS or be in danger. were you in a wreck did others hack your car or after a theft attempt failed. w can no guess history of any car and context of that. ever. to reset DTC we push the reset button on the scan tool then drive up to 3 days to see all real failures return if they do that means hardware failure, and needs new parts and Airbags are not any kind of DIY actions ever. takes special tools you do not have nor can buy