2001 Hyundai Accent Strange problems.

Tiny
GFOLKINS
  • MEMBER
  • 2001 HYUNDAI ACCENT
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 56,000 MILES
First, my check engline light is normally lit. I have a cheap obd-2 scanner that only gives the letter E for the error code instead of the 4-digit number.
Here are the symptoms my car is having:
1. When stopped at a stop sign or a red light, if I do not put it in park or neutral, the engine will make strange "chugging"-like sounds and get a little "jumpy"
2. If I accelerate too rapidly from park, especially up a hill, those noises will be louder than normal, it will get more jumpy, and my check engline light will blink for a few seconds until I slow down to a crawl basically.
3. It also seems like when the tachometer is over 2,500 rpm's while I am driving it makes those chugging sounds whether I am going uphill or not.
4. Backing down the driveway in reverse makes the check engline light blink with the same bad chugging noises unless I go down really fast, or coast down in neutral.

Within the last 1-2 months, I've replaced the spark plugs and used a fuel additive that is supposed to clean the fuel injectors and that sort of thing.
I change my own oil and oil filter. It seems like this started happening last time I changed it, but as far as I can tell I never did anything wrong.

It gives me the feeling that it's going to conk out on me at a red light one of these days. It doesn't matter what the weather is like or anything.

Any suggestions as to what this could be? Thanks
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Sunday, February 10th, 2008 AT 12:33 PM

3 Replies

Tiny
JACK42
  • MEMBER
Go to Autozone and have it scanned for free. We need the code for a place to start diagnosing your car
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Monday, February 11th, 2008 AT 7:35 AM
Tiny
GFOLKINS
  • MEMBER
Okay, so we don't have Autozone in Canada, so I couldn't get it done for free. I had to pay $70 today to finally get it done. The codes are P0136 and P0141 (read O2 sensor), and P0300 and P0301 (misfire codes).

They said my faulty O2 sensor was making my car mis-fire, which doesn't make a whole lot of sense to me. I did not realize that could cause a misfire.

Interestingly enough, I replaced the spark plugs and wires, and it's been perfectly fine ever since.

I have a couple of other issues about my 2001 Accent though.

What would cause the rear window defogger not to work if the fuses are all good? (I can have it on for 10 minutes when it's all iced up in the morning and it's as if I never turned it on at all)

Where is the connection for the dashboard lights? They were fading in and fading out for a while (hitting a bump would either fully illuminate them or completely darken them). Now they don't light up at all. I am pretty sure it's just a loose connection because of the way they were fading in and out, and if I can get at it, I can probably just tighten it if I knew where it was at.

Thanks

Where is the connection
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Friday, March 7th, 2008 AT 8:53 PM
Tiny
JACK42
  • MEMBER
For your lights to do that, it would probably be the dimmer (rheostat) for the dash lights, maybe the headlight switch. Any connections will be at those 2 places. You might have to replace th erear oxygen sensor from what the codes are, they relate to the heater in the sensor, not how well it is working, dont be too surprised if the light comes back on with either of these 2 codes. Tune up will usually fix misfires, usually but not always. If fuses 9, 17 are good, in th epassenger compartment relay block is a relay for the rear defogger, it may be bad. Try swapping that relay for the a/c relay to see if that will fix it
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Saturday, March 8th, 2008 AT 8:08 AM

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