Hello, I'm hoping that someone here can help me out...

I have a 2000 Hyundai Elantra with about 152,000 miles on it. A few weeks ago, my check engine light came on, but nothing happened and it ended up going away itself. About a week after that, it stalled at a stop, but turned back on. For awhile I have felt like the car was acting a little sluggish.

Last week the car died on me while slowing down to make a turn so that I could cross two lanes of oncoming traffic. When I began to slow down, it cut out. I waited for awhile, turned it back on, and it seemed safe to drive the short distance home. It cut out after about one mile going around 40mph. I pressed the gas pedal to the floor and nothing happened at all...then the engine died. It ended up restarting later, but kept stalling every so often so I had it towed to my boyfriend's house.

At his house he checked codes and it came up with random cylinder misfire and then a bad crankshaft position sensor. He tested the resistance on these parts and they were indeed bad. So, we replace these parts, but we still have a cylinder misfire code being pulled. We replaced the spark plugs and wires, but it still pulls a code-- now for an ignition coil. So, we replace that...still, the check engine light comes on every time we clear it when we hit about 55mph, but you cannot feel it misfire at all. The stalling, however, has stopped.


We eventually gave up and decided to take it to the dealer to run a diagnostic, who is keeping it overnight to run more tests. The mechanic says he believes that we just need to replace our aftermarket sparkplug wires from Autozone with Hyundai parts (says the check engine light didn't come on running with Hyundai parts), but I'm afraid it may be the computer or something more serious.

Has anyone had a similar problem? I am at my wit's end here. I've been using Durlast wires for years and never had a problem.

Hi,

You should use parts recommended by Hyundai - it's the best way i think. What does the dealer say about your car?


cheers,
mark

ps: I had similar problems but it was faulty/worn fuel pump and spark plugs.

This post has been edited by marek46: Aug 5 2008, 03:57 AM

I just joined the forum, so it's been awhile since your post. Your problem sounds very similar to the one I just resolved with my 96 Elantra station wagon. The engine codes were reporting only a non-specific multiple cylinder misfire. Based on the recommendation of the dealer, my mechanic replaces the fuel pump and associated filters, etc. The problem returned after a few days of driving. The dealer could not provide any further information or recommendations (after $160 of diagnosis only). My mechanic then proceeded to replace one part at a time until the problem was resolved. It turned out that the problem was the fuel pressure regulator. There were no obvious problems with the part, and it passed all the tests, but when it was replaced the problem went away.