Engine Mechanical problem
2003 Hyundai Tiburon 4 cyl Two Wheel Drive Manual 35,000 miles
Ok well as bad as it sounds, I don't think it is. The car runs fine until this starts happening but then it won't stop til you are at your destination. It usually starts when I hit a bump or have been driving for over 20 minutes. What I mean by shuddering and jumping is basically the car seems like it starts to hesitate, no not like its misfiring, but more so like someone is letting off the gas and punching it again really fast. What I really don't get is sometimes I will put the clutch in to stop at a red light and the engine just stalls out however 90% of the time, the engine acts 100% fine. Another thing its doing is when driving down the highway or down any road for that matter, I will let off the gas to just maintain speed and my check engine light comes on while the engine is decreasing speed. Now. The car basically felt like it stalled but the car is still running. However in order to get going again I have to basically press, well not basically I do have to press the accelerator all the way to the floor and then boom the car basically jumps back to life and the check engine light goes off. The last piece of information I can think to give you is sometimes when its acting really bad I have popped the hood before turning the car off to take a look around the engine bay. MY first thought was it could be a loose ground somewhere, however that doesn't seem to be the case on the top of the engine anyways, battery, and IM. But the catch here is sometimes when I goto shut the hood. As I do so, it stalls the car out from the hood shutting. Weird huh?
Hopefully someone can give me some insight to this as I am completely stumped and can't seem to figure out whats wrong, think it could be a ground on the underside, think there is one near the tranny? Not quite sure honestly. Checked the spark plugs but they are brand new thanks to bluegtv6 and the wires are brand new as well from NGK. However the coil I believe is still stock.
I am running in a 03 i4 turbo (System Upgrade Turbo Kit Stage 2) just to let you know but I have a feeling my mods have nothing to do with the problem on hand here.
Thanks for the help in advance,
Wednesday, October 27th, 2010 AT 9:08 PM