2001 Tiburon hesitation problems

Question

I have a 2001 Tiburon and a few days ago, it started to act funny, I started getting little hesitation/jerking motions under acceleration. As a few days went by, it started getting worse, as now the car is bucking/surging under acceleration. The car runs fine while maintaining a constant speed but near sounds like its going to stall when i'm still. The car recently had a timing belt change from the dealer but I don't think thats it. I will start with the basics, injector cleaner, clean the throttlebody and replace the fuel filter then on to plugs and wires if that doesn't help. Any other ideas of what this may be or what I can try?

Answer 1

ignition module

Answer 2

most of the shop now they do engine analyzer to check. or some shop

they do both Visual and Electronic.

you did change fuel filter not there.

fuel pump replace.

there two fuel pump - one inside gas tank and the second attach to the engine. attach to the engine to be replace    

Answer 3

It could either be your ignition coils or maybe your timing belt timing is slightly off. Hyundai timing belts are not as easy to install like other car makes. Also, don't take it for granted that because the dealer did the installation, that they did the right thing.

Answer 4

Yea i don't think its the timing belt either cause if there was an issue with that you would have had a problem when you picked it up. It sounds more like you have a cylinder that is misfiring. The most common cause in this vehicle is the spark plug wires arking, and if its a 2.7L v6 i can almost guarantee you that it is #5 wire that is your issue. other than that just make sure your coils have power and there are no restrictions in the fuel rails or injectors.  

Answer 5

You can definitely hear when a vehicle isn't running on all cylinders and the check engine light would come on if it were your spark plugs or wires.  Even if the light isn't on, there should be codes in the computer (connect a scantool to the data link connector - DLC) that will tell the technician what is causing the problem.  

Could be your mass air flow sensor (MAF), throttle position sensor (TPS), oxygen sensor, idle speed actuator or fuel pressure sensor.  Only a real diagnosis can narrow the field.  

The fuel filter is an in-line filter and relatively easy to change.  Empty the contents into a clear glass and look for contamination.  Water will separate from the gas, telling you there is water in the system.  Get a good dry gas and follow the directions on the bottle.  Usually need at least half a tank.

I know everyone hates going to a dealer because they think they're getting the shaft but (and I can only speak for my dealership) we have the tools and the resources to properly diagnose your vehicle the first time around.  By the time you're done throwing parts at it (costing you money you may not need to spend) you probably could have had it fixed and get a 1 year/ 12,000 mile warranty on the OE parts.

Answer 6

I had a similar problem with the same model and year as yours and it seemed to be a mixture of a faulty ignition coil and a dirty injection system.