Check Engine Light Flashing/stall..help please! - Hyundai Forums : Hyundai Forum
 
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#1 Old 08-11-2011, 03:32 AM
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Hello all,

first i aplogize if this issue has been previously addressed.
Earlier today i left my car idling for a couple of minutes and when i got back in and started to drive the car was vibrating, almost as if it was going to stall and the check engine light was flashing. drove a bit and stopped, started the car and now the check engine light stays on constantly. I have had the light come on (and remain on) a few times in the last while but it is usually solved by tightening the gas cap. it always seems to happen when i am low on gas (100 mile range-ish) Someone suggested maybe i had dirty gas in the car and needed stabilizer. My boyfriend said its a "misfire" and to change the spark plugs. Anyone had this problem? I dont think there are any stores in canada that will run free diagnostics so i want to avoid paying a stealer for that, if possible. No warranty. Thank you all

2007 Hyundai Sonata 3.3L. 20% Tint..thats all so far
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#2 Old 08-11-2011, 09:43 AM
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First of all, I would get the codes scanned, that would be your best bet to determine the actual cause of the stalling. While it might cost to have the scans performed, in the end it would probably be cheaper, and less time consuming, than trying to resolve this issue via trial and error. It sounds to me like you are having fuel delivery issues, but that could range from a failing fuel pump, blocked fuel line, etc. and without further information it would be just a wild guess as to the root cause of your issue.


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#3 Old 08-11-2011, 09:57 AM
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Ya 1st thing you need to do is hit up your local auto parts store and have them pull the codes and go from there.
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#4 Old 08-11-2011, 12:48 PM
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QUOTE (MsSonataLuvr @ Aug 11 2011, 03:32 AM)
Quote:
Hello all,

first i aplogize if this issue has been previously addressed.
started to drive the car was vibrating, almost as if it was going to stall and the check engine light was flashing.
[b]Flashing light is warning that problem could catastrophic problem that would kill a catalyst... repair it now..

drove a bit and stopped, started the car and now the check engine light stays on constantly.
[b]Can be driven with light on, provided there is no drivability concern.. but this in essence makes you an emission violator.

I have had the light come on (and remain on) a few times in the last while but it is usually solved by tightening the gas cap.
[b]Light on, code is in PCM until manually cleared with scan tool.. Light on for trivial code will go off as there no real danger to driving with problem detected. Light may come back on as reminder or if problem detected in 2 consecutive drive cycle where PCM see same fault occur.. Tightening fuel cap is not always the cure.. how do you know it had an EVAP code ?? EVAP only test when when drive cycle criteria been met. There is a whole lot of codes that could be toruble.

Someone suggested maybe i had dirty gas in the car and needed stabilizer.
[b]Then it would be problem through out entire load of fuel.. fuel pump at station has large filter, you have inlet filter and primary fuel filter on the car.. stabilizer ?? Thats funny,, I dont even use Sta-Bil in my own stuff. Hard to get bum fuel these days, too many controls on the product.

My boyfriend said its a "misfire" and to change the spark plugs.
[b]Dont see plug related misfire concern with the 3.3/3.8 engines.. alot of money and time for a wild guess.

Anyone had this problem?
[b]Seen oil control valves get stupid and goof the cam timing to give rough run... Valve is something like $150 (US) for each bank, 1 is minor labor to replace, bank 2 oil control valve requires removal of complete upper & lower intake to replace, figure maybe $290 (US) labor, add a handfull of intake gaskets, scan tool time

I dont think there are any stores in canada that will run free diagnostics so i want to avoid paying a stealer for that, if possible.
[b]Free to guess at some expensive parts and labor, or pay for scan/diag to find which circuit the PCM has determined to be at fault.

No warranty.
[b]Ok

Have the DTC(s) yet ??

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#5 Old 08-11-2011, 04:22 PM
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thank you all- when i got in today the engine light is now OFF! but it seems to be recurring ( and getting more frequent now)

the fuel delivery issue sounds right as i have only seen it happen when i am low on gas. the only other time i saw this happen was after i got rear ended last year, right after i picked the car up from repair it felt almost like it was chugging/engine light on and i went right to a mechanic who told me to put gas in it and it would go away. lol

[b]anyone in canada know of any parts stores that will give me the codes for free??

2007 Hyundai Sonata 3.3L. 20% Tint..thats all so far
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#6 Old 08-11-2011, 04:38 PM
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stealer quoted me $99.95 to run diagnostics

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#7 Old 08-11-2011, 05:04 PM
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QUOTE (MsSonataLuvr @ Aug 11 2011, 04:38 PM)
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stealer quoted me $99.95 to run diagnostics

We $92 (US) start, add part(s) and labor to install.

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#8 Old 08-11-2011, 09:38 PM
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rallyman
If there's any chance you might repair the problem yourself you might as well buy a scantool. You could buy one for the price the dealer wants for the diagnostic. If you were near me I'd scan it for you for free but since you're in Ottawa that won't happen.

If you're looking for a scantool check Canadian Tire or Part Source. They often have them on sale for a decent price. If your chosen repair facility is the dealer you might as well just pay the fee and have them check it out. Even if you bought a scantool, got the codes and decided not to tackle it yourself they are going to charge that fee to do their own diagnostic to determine the problem.
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#9 Old 08-11-2011, 10:10 PM
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QUOTE (rallyman @ Aug 11 2011, 07:38 PM)
Quote:
Even if you bought a scantool, got the codes and decided not to tackle it yourself they are going to charge that fee to do their own diagnostic to determine the problem.
My experience with diagnostic fees is that they are only charged if no problem is found. I've been told many times by service personnel that there is a fee to diagnose a problem, but that the diagnostic fee would be waived if a problem was found and repaired during the same visit. I can't remember the last time I actually paid for a dagnosis at a dealer.


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#10 Old 08-12-2011, 09:37 PM
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rallyman
There may not be a line item on an invoice for a diagnostic fee if a repair is made but one way or another you are paying for it. Repair shops don't work for free nor should they. I don't think it's appropraite when they have a flat fee to perform a diagnostic because there will be so many variations in the time it takes but it's not uncommon in my area.
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