2001 Hyundai Elantra car lacks power

Tiny
BYLLH74
  • MEMBER
  • 2001 HYUNDAI ELANTRA
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 175,000 MILES
Hi, I was given an 01 hyundai elantra that didnt run. Didnt know what happened to it but I did get it running. I put a new head gasket in it, all the valves were ok and no warpage. I also replaced the main and rod bearings cause of knocking. When I started I placed everything at top dead center along with the camshafts. It starts and runs, but it lacks power. I keep getting the code 0340 (cam position sensor) which I have replaced. Any ideas where to go next?
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Wednesday, June 30th, 2010 AT 9:16 AM

9 Replies

Tiny
MHPAUTOS
  • EXPERT
Hi there, start with re checking the cam timing, it may be a tooth out, start here.

Mark (mhpautos)
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Wednesday, June 30th, 2010 AT 10:11 AM
Tiny
BYLLH74
  • MEMBER
Thank you. I will recheck all the timing marks today. Ill post my results after I finish
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Wednesday, June 30th, 2010 AT 10:17 AM
Tiny
MHPAUTOS
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OK, if the timing is correct, we will look further into this problem.

Mark (mhpautos)
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Wednesday, June 30th, 2010 AT 10:21 AM
Tiny
BYLLH74
  • MEMBER
Sorry, I have been sick and havent worked much on the car. I did check the timing and it was right on. I did set it ahead and behind a tooth. Setting it 1 tooth back did make it run even worse. But forward didnt change it much at all. The history on the car I know is that it broke about a year ago. The owner said it just stopped and wouldnt do anything. Prior to that it did have a new head and gasket put in. But nothing on the lower engine. It was supposedly ran out of oil cause of a stripped oil pan drain plug (which I replaced with another oil pan from wrecking yard). Its sat in her driveway for about a year until I picked it up a few weeks ago. Maybe gas is bad. Im not sure where to go with it. It still gives me the code 0340 (cam position sensor). Thanks, I appriciate your help on this project.
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Monday, July 5th, 2010 AT 8:23 PM
Tiny
MHPAUTOS
  • EXPERT
I must apologise my self, I am on leave just now and I have just popped into an Internet cafe to check my Emails, I will be back on line full time next week, I don't have any information on hand to work with just now.

Mark
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Monday, July 5th, 2010 AT 9:02 PM
Tiny
BYLLH74
  • MEMBER
No problem Mark. Thanks so much for getting back to me. Enjoy

Bill
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Monday, July 5th, 2010 AT 9:57 PM
Tiny
MHPAUTOS
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Hi Bill,

I am back at home now, can you give me an up date as to where your at with this problem?

Mark.
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Saturday, July 10th, 2010 AT 6:03 AM
Tiny
BYLLH74
  • MEMBER
Hey Mark, I hope you enjoyed your time away. As far as the car, I haven't done much with it since the timing. I did find out that the gas in the tank has been sitting for about a year or a little more. Don't know if that could cause it to have no power. It seems like it lacks power when I push on the gas. At idle it sounds really good. Still have the code 0340 (cam position sensor). Compression is right at 150 on all 4 cylinders. Transmission fluid is full and oil is good. If u need any more info, let me know. Thanks again

Bill
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Saturday, July 10th, 2010 AT 7:55 PM
Tiny
MHPAUTOS
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HI Bill,

Had a great time, holidays are always way to short, but back to the salt mines we must head, lol. OK, With the valve timing correct and a cam sensor indication still showing we may have a bad connection at the loom plug, maybe a corroded terminal or a loose pin, I would drain the stale fuel and flush the lines, replace the fuel filter and add a liberal dose of injector cleaner as well, go through these steps and get back to me with what you find, also don't disregard a faulty sensor if all checks are ok.

Mark (mhpautos)
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Saturday, July 10th, 2010 AT 9:29 PM

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