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Old 06-27-2004, 12:09 PM
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Question on my "un-muscle" car

Took my Nova off the road to begin the long restoration process and now my only car is my 1993 Hyundai scoupe. Yeah, laugh all you want-I know. Anyways, I've been having a problem with it lately and since I really know very little about the car and all it's sensors and electronic goodies, I thought I should come to you all with my questions.
First off let me say that it is a 1495 c.c. ,12 valve efi engine with a 5 speed stickand 100,000 miles on it. Basically a fuel injected lawn mower engine with lots of wires and tubes sticking out of it-LOL.
So my problem is this: I knew it was running really rich, since it would sometimes blow black smoke and the tail pipes were all black and sooty. It would also SOMETIMES bog down, not want to go and be very hard to start-especially if it stalled during one of these episodes. Also, my check engine light is on. It does this bogging , sluggish stalling thing at any speed and any temperature- but epecially if it gets real hot. It also sometimes will rev all the way up to 4000 rpm and stay there and you have to shut it down-at which point a restart results in the engine running like it's "missing" or something with lots of black smoke. This will pass after a few minutes and then it's good to go?So I did the really obvious thing and replaced the cat converter and the o2 sensor. It's still doing all of the above mentioned things, just less frequently now, and I'm perplexed as to where to go next with it(short of the dealership) I'll do a tune up on it this week, plugs, wires, cap & rotor, pcv, air filter etc. and could use any other help or advice that you all could offer. Sorry about the long arse post!
p.s. Could it be my fuel pressure regulator? Fuel pump? EGr valve?

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Old 06-27-2004, 12:27 PM
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You said the check engine light was on, right. The first thing I would do is borrow or rent a code reader. You can rent them free from many places like o'reillys and autozone will usually scan it for you. This would probably give you an idea of the nature of the problem.
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