1993 Hyundai Scoupe LS from North America - Comments

Air flow sensor. Numerous spark plug wire sets (5).

When I first bought the car it was great. Lots of pep, it kept up well at the light races in town. But after I washed the motor the car hesitated and had poor idle. I took it in to be serviced and I had to pay for a new fuel filter and new spark plugs. Seemed OK for about two days and the car was acting up again. I took it to another dealership because the previous one couldn't find the problem. The second shop said that it was a flow sensor in the intake, and also cleaned the intake manifold. Not any better. I seem to have found the problem myself after some trial and error. It seems that every time I change the spark plug wires it runs good until they burn up or foul some how. I've gone through 5 sets of cables, the last one lasted the longest - 8 months. Because I wrapped them with header insulating wrap to keep the heat off them. I talked with a shop recently which told me that it could be a faulty coil. I'll try that replacement as well as a new set of cables. I hope that this works. I enjoy my car and it is great when it isn't missing spark delivery.

I love my car, however lately it has had me at my wits end. My car started missing so I put a new set of spark plugs on it. It ran great for a couple of weeks. Now it is missing again. I tried new fuel filters to no avail. Any advice?

Iam going through hyundai scoupe promblems now myself. my scoupe is miss firing like you said and when I step on the gas its bogs down and pops. I went to several places and they never seen a hyundai with a turbo. it is a 1.5 turbo. fiestone tires says its the map sensor and the airflow meter. i changed fuel filter plugs, wires, cap/rotor, a basic tuneup, but no luck yet try the map sensor its my only advise. good luck

chris.

Hi, this is a comment in reference to the problem of changing spark plugs, then having them go bad in a short time again. I had the same problem. I would change spark plugs and in a few weeks, the engine would be misfiring again. One evening I opened my hood while the engine was running, and saw my brand new cheap brand name plug wires glowing in the dark. The electricity was running on the outside of the wire on almost all of the plug wires. I pulled them off, and put my old factory set back on and the engine ran great! The new wires had a life time warranty, so I brought them back, they promptly replaced them, and I reinstalled. A few weeks went by and they went bad also! To make a long story short, I went around that block a few more times, always with the same result. The last set was brought back to the cheap auto parts place, I told them what they could do with them, and I am still using my factory plug wires, with no fouled plugs for 4 years. Cheaper is not always better!