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XG350

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Question
Car stalls and P0401 insufficient egr flow
The P0401 code is for low EGR flow, but would not be the cause of the stalling if the flow was too low. You also state the problem is when the engine is cold and goes away after it is...
Question
No pickup power, shifting gear problems, hose loose
After reading all the different issues and problems you are having and the air intake problems that you are mentioning, I suggest having a mechanic do a thorough check and diagnosis of your shifting issues to see if there are...
Question
Disconnected wire under driver's seat but no where to plug it in
If your vehicle was equipped with driver's and passenger side impact protection, then the connection would go to the seat inflaters built in them. If you have new seat covers or the seats were re-covered, then this wire should not...
Question
Door ajar light stays on
You should have a mechanic scan and diagnose the body computer to see what door is causing the light to stay on. If the aftermarket alarm is the cause, then it would need to be checked by disconnecting it to...
Question
Engine knocking, oil light on, engine quit
If you ran the engine out of oil until the engine quit or locked up, then you tried to add oil after the damage was already done. The engine bearings will need oil to work properly, and when you ran...
Question
After oil change informed that engine was leaking from valve gasket cover.
Valve cover gasket leaks are located by visual inspection and are usually one of the easier leaks to confirm the source of, since they are high up on the engine. It would't hurt to wash it off, especially if it's...
Question
Can't get a full tank of gas without pump stopping
The fuel tank venting system is plugged or blocked in some way. There is a two-way valve and a canister close valve that can cause the fuel tank to not get vented during fill up. Have these inspected and checked...
Question
Car isn't cranking
It sounds like you may have a problem with the battery cables. Check the ends by the battery thoroughly, especially if they have been replaced by universal ones. The main ground cable runs with the starter positive cable and is...
Question
Was they right
Your car has two coolers, one in the radiator, and one in front of the radiator. The one out front is the one that is more likely to leak. There are three options to repair the leak. First, you...
Question
A leak from power steering pressure line hose
Hello. If that other hose is leaking then it will need to be replaced also. If the section of hose that is leaking is the metal line then that can usually only be purchased at the dealer. This line is...
Question
Does the motor have to be removed to install the motor and transmission mount
No, the motor does not need to be removed. The engine does need to be lifted a little to take pressure off of the mounts in order to remove them.
Question
Hi, I am hearing a very loud "rolling thunder" noise while driving that gets louder at higher speeds.. What could be the issue?
Hello. There are several components that will cause these noises when accelerating. Typically they are related to the exhaust system. You may be experiencing an exhaust leak for one option. This can occur when a hole has found its way...
Question
Battery test after-market stereo question
First you had the battery tested at an AutoZone and I cannot know what they used to test the battery. Firestone my have used a load testing battery tester that can check to see if a battery can take a...
Question
My car will start but will only run for a certain amount of time before the engine shuts off. Then it won't start. Why?
Hi there. In many cases, when the car will start but quickly stall, it's due to either a reduction in fuel flow (caused by a worn out fuel pump, dirty fuel filter or clogged or dirty fuel injectors or the...
Question
Car wont start or go into gear. Also brake light icon, no blown bulbs
Hi there. If the vehicle will not start or shift into gear, it's quite possible that the brake safety switch is damaged. If the auto parts store can't resolve this problem, please contact a professional mechanic come to your location...
Question
Can an overheated engine cause my car to not drive ?
A blown head gasket may cause a number of different symptoms. A head gasket that fails between cylinders will generally cause a misfire and potentially compression leaks from one cylinder into another. Low compression will eventually result in a rough...
Question
Power steering
Hi There, Your car's power steering system works by use of hydraulic pressure that runs through the pump which is powered by the motor by a belt. There is also a series of lines and valves that the power steering...
Question
Where is the relay flasher located in the 2002 Hyundai XG350
Hello -both the flasher unit and the relay for it are close to each other, and under the dash just left of the steering column. The knee crash pad will need to be removed to make it easier to get...
Question
no start crank but no start key on no check engine lite no radio no cluster lights no power to windows cig liters don't work
Hi there. What you have described is possibly caused by either a battery that is completely dead, damaged battery cables or a damaged main relay. In order to determine which one is damaged and needs to be replaced, you should...
Question
How do I fix this? 2002 Hyundai xg350 Transmission Control Relay Always On: I replaced the TCM, no fuses are blown. Still broken.
The only way to fix this issue is to go through the test protocol (diagnostic decision tree) in the Hyundai factory service manual. In particular, for this code (P1723) the circuit to and from the module has to be tested...

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