Check Engine light on and flashing
+ Reply to Thread
Page 1 of 2 1 2 LastLast
Results 1 to 20 of 30

Thread: Check Engine light on and flashing

  1. #1

    Default Check Engine light on and flashing

    Today on my way to work the check engine light went on and was flashing. As I fed the car gas it seemed to shutter a bit and was running real rough. Yesterday it worked fine. Never had this problem before. The car has 69,000 miles on it. I called the dealer and he told me not to drive the vehicle if the light is flashing. I had it towed to the dealer. The service advisor told me that if the light is flashing it is most likely an engine problem and should be covered under the 100,000 power train warranty. The oil is changed every 3,000 miles and looked good. All the belts and hoses looked good too.
    I hope I did the right thing having it towed to the dealer, for he told me that the diagnostic test would be $90.00 and if it turned out not to be an engine problem I would have to pay that.
    Any ideas would be helpful.
    thank you,
    Al

  2. Remove Advertisements
    Hyundai Elantra XD
    Advertisements
     

  3. #2
    Acountabilibuddy ricerrx7 knows a lot about Elantras
    Join Date
    Oct 2004
    Location
    Redondo Beach, Ca
    Posts
    4,861

    Default Re: Check Engine light on and flashing

    We can't really tell you anything without knowing what code was set.
    Flying spaghetti monster loves you...


    I am openly an *******. 1 of 3251 *******s on this forum.

  4. #3
    Super Moderator Cypher knows a lot about Elantras Cypher's Avatar
    Join Date
    Jun 2005
    Location
    Eastern Shore, MD
    Posts
    12,634

    Default Re: Check Engine light on and flashing

    flashing cel means cataytic failure often times caused by running too lean (i believe). changing out the plugs and wires seemed to have fixed the cel for most people.
    Last edited by Cypher; 06-22-2006 at 09:38 AM.
    2002 Hyundai Elantra: Sold
    1991 Nissan 240sx Hatch SR Swapped: Sold
    1992 Toyota MR2: Sold
    1991 Nissan 240sx Coupe: Future KA-T
    1999 Hyundai Tiburon: Daily Driver

  5. #4
    Ultimate Post Whore 05xd has not yet proved knowledgeable 05xd's Avatar
    Join Date
    May 2005
    Location
    cambridge,md
    Posts
    3,323

    Default Re: Check Engine light on and flashing

    And at 69000 miles,plugs are not covered and I dont think wires are either.....Thats horrible that I cant remember that crap.Be prepared to get a nice estimate
    You are in 60k service territory
    timing belt,drive belts, trans service, coolant service and so on

  6. #5

    Default Re: Check Engine light on and flashing

    ****UPDATE****
    The dealer calld me today. They said it was nothing more than bad spark plug wires. Total cost $160.00 That included the scan and the tax. A bit expensive but not to bad from a dealer.

  7. #6
    Poster God txdproject has not yet proved knowledgeable txdproject's Avatar
    Join Date
    Dec 2005
    Location
    Chicago, IL- South Sub's
    Posts
    1,001

    Default Re: Check Engine light on and flashing

    ouch 160 dollars for a spark plug... hope they did the all 4.. even if they did thats still rip off land. next time you gotta hit your local autozone and let them scan it... it so easy to replace spark plugs on our cars... hopefully this wont happen to you again

  8. #7
    Newbie Lantra2001 has not yet proved knowledgeable Lantra2001's Avatar
    Join Date
    Aug 2004
    Location
    Butler, Pennsylvania
    Posts
    26

    Default Re: Check Engine light on and flashing

    ^^ Congrats on your 500th Post ^^

    Yeah that is a bit expensive I'd say. If they didn't replace all 4 you def. got ripped...I would check and ask them just to be sure...there's no way 1 spark plug should cost 160 bucks....


    2001 Hyundai Elantra GLS--2.0L DOHC
    -Flowmaster Muffler
    -Eurolite Xenon Headlights
    -2 10" JL Audio W3V2 Subwoofers
    -Rockford Fosgate Punch 400s & 600 Watt Amps
    -Sony CDX-M630 Head Unit
    -OEM Spoiler
    -APC Muffler Tip
    -Rear Windows 20% Tinted

  9. #8
    Poster God txdproject has not yet proved knowledgeable txdproject's Avatar
    Join Date
    Dec 2005
    Location
    Chicago, IL- South Sub's
    Posts
    1,001

    Default Re: Check Engine light on and flashing

    probley did replace all 4... unless the dealer is just trying f*ck him over... still thats a crap load of money for that simple fix... but then again dealers love to take your money. My sister went to a dealer and asked them how much they would charge for spark plugs to be put in if she provided them and they said 100... HA 100 dollars and your providing the plugs thats nuts.

  10. #9
    Acountabilibuddy ricerrx7 knows a lot about Elantras
    Join Date
    Oct 2004
    Location
    Redondo Beach, Ca
    Posts
    4,861

    Default Re: Check Engine light on and flashing

    Ok, guys. Let's think for a minute. There is no code that says "replace spark plug wires" (and for those saying spark plugs, he said wires which are a little more expensive). When he got there, he was probably quoted 1 hour for diagnosis. That is probably around $80. Then he got charged for the wires, probably around $40 and half an hour labor to put them in, that's another $40. Therefore costing $160. You have to pay for experience. If it was as simple as replacing spark plug wires, then why didn't he do it himself? Because he didn't know what the hell was wrong. If you don't know what's going on, be prepared to pay someone who does.
    Flying spaghetti monster loves you...


    I am openly an *******. 1 of 3251 *******s on this forum.

  11. #10
    turbo envy only1db has picked up a wrench only1db's Avatar
    Join Date
    May 2004
    Location
    Tannersville, PA
    Posts
    12,883

    Default Re: Check Engine light on and flashing

    agreed...if you dont know you take it to the dealer...

    and yeah he said spark plug wires....even if it were spark plugs..the iridiums cost like 40 bucks from the dealer...


    Silver Certified Tech turned Sonographer! and blogger?? check it out!!

    http://allthingshyundai.blogspot.com/

    Veloster Turbo is in the future....

  12. #11

    Default Re: Check Engine light on and flashing

    Yes, They replaced my spark plug wires. Not the plugs. The wires were just over $50.00 plus they charged me 1 hours worth of labor for the scan and the install plus tax. I know it seems a bit high, but I don't do this kind of work for a living so I have no choice but to pay somebody who can.

    Oh, and thank you ricerrx7. What you wrote was exactly correct.

  13. #12
    Acountabilibuddy ricerrx7 knows a lot about Elantras
    Join Date
    Oct 2004
    Location
    Redondo Beach, Ca
    Posts
    4,861

    Default Re: Check Engine light on and flashing

    ^No problem. I am a technician at a dealership, and it pisses me off when people don't understand and automatically think we're always trying to rip them off.
    Flying spaghetti monster loves you...


    I am openly an *******. 1 of 3251 *******s on this forum.

  14. #13
    Super Moderator Cypher knows a lot about Elantras Cypher's Avatar
    Join Date
    Jun 2005
    Location
    Eastern Shore, MD
    Posts
    12,634

    Default Re: Check Engine light on and flashing

    Quote Originally Posted by Cypher
    flashing cel means cataytic failure often times caused by running too lean (i believe). changing out the plugs and wires seemed to have fixed the cel for most people.
    . told ya
    2002 Hyundai Elantra: Sold
    1991 Nissan 240sx Hatch SR Swapped: Sold
    1992 Toyota MR2: Sold
    1991 Nissan 240sx Coupe: Future KA-T
    1999 Hyundai Tiburon: Daily Driver

  15. #14

    Default Re: Check Engine light on and flashing

    I know what you mean Ricerrx , I get the same thing when I make computer repair calls .
    01 Elantra GLS 92 Elantra GLS 92 Elantra
    XTD Stage-2 Clutch kit
    F1 11LB racing flywheel
    215/40-17 Continental
    17X7.5 ATS type 10
    V6 Tibby rear swaybar
    DIY CAI
    Evil Clutch Spring Mod

  16. #15
    Senior Member QuickSilverGT has not yet proved knowledgeable QuickSilverGT's Avatar
    Join Date
    May 2004
    Location
    Pensacola
    Posts
    879

    Default Re: Check Engine light on and flashing

    I get the same crap at U-Haul. We go to hook up a trailer and their wiring harness doesn't work, they proceed to tell me it worked fine on their boat (never fails), show them why its not working and whats wrong with it, they refuse to do it themselves, and ***** when they get a quote on how much it'll run. We charge a min. of $32.50 for any work we do, and you'd be surprised how many people will come in and pay when all that wrong is a fuse is blown.

  17. #16
    Senior Member HYTECH has not yet proved knowledgeable
    Join Date
    Jul 2006
    Location
    florida
    Posts
    569

    Default Re: Check Engine light on and flashing

    Quote Originally Posted by Cypher
    . told ya
    not really a flashing cel means there is a cylinder misfire and code p0300-p0304 when it flashes it means you should stop driving or you risk damaging the cat the raw fuel from the misfiring cyl. will burn in the cat. this will overheat and damage it. in some cases if you continue to drive and the plug is not firing at all the raw fuel in the cyl will wash the oil from the cyl walls and rings causeing wear and will damage your engine and cause low compression
    Platinum Hyundai Tech, ASE Certified Master Tech, L1 Advanced Engine Performance Specialist, ASE Certified Master Engine Machinist. Over all Gold medalist of the 2011 Hyundai Motors World Skill Olympics #1 Hyundai tech in the world!

  18. #17
    Broke @$$ Fool BlackElantraGT has not yet proved knowledgeable BlackElantraGT's Avatar
    Join Date
    May 2004
    Location
    USA
    Posts
    2,648

    Default Re: Check Engine light on and flashing

    Hytech, if one of the cylinders has low compression, would it cause the engine to make a whining sound? I might have to post a sound clip later.

  19. #18
    Junior Member TwiZ has not yet proved knowledgeable
    Join Date
    Jul 2006
    Location
    milwaukee
    Posts
    66

    Default Re: Check Engine light on and flashing

    Quote Originally Posted by HYTECH
    not really a flashing cel means there is a cylinder misfire and code p0300-p0304 when it flashes it means you should stop driving or you risk damaging the cat the raw fuel from the misfiring cyl. will burn in the cat. this will overheat and damage it. in some cases if you continue to drive and the plug is not firing at all the raw fuel in the cyl will wash the oil from the cyl walls and rings causeing wear and will damage your engine and cause low compression
    a flashing check engine light does not necessarily mean a misfire...and the car can have a misfire code w/out cel flashing...

  20. #19
    Senior Member HYTECH has not yet proved knowledgeable
    Join Date
    Jul 2006
    Location
    florida
    Posts
    569

    Default Re: Check Engine light on and flashing

    Quote Originally Posted by TwiZ
    a flashing check engine light does not necessarily mean a misfire...and the car can have a misfire code w/out cel flashing...
    a constant misfire is the only thing that will flash a cel if the misfire is only under load and/or not constant it will not flash

    Quote Originally Posted by BlackElantraGT
    Hytech, if one of the cylinders has low compression, would it cause the engine to make a whining sound? I might have to post a sound clip later.
    no it shouldn't if you had low compression on one cyl you would have a misfire at lower rpm
    Last edited by HYTECH; 09-24-2006 at 11:16 AM.
    Platinum Hyundai Tech, ASE Certified Master Tech, L1 Advanced Engine Performance Specialist, ASE Certified Master Engine Machinist. Over all Gold medalist of the 2011 Hyundai Motors World Skill Olympics #1 Hyundai tech in the world!

  21. #20
    - Bnystrom has not yet proved knowledgeable
    Join Date
    May 2004
    Location
    Nashua, NH
    Posts
    471

    Default Re: Check Engine light on and flashing

    Quote Originally Posted by ricerrx7
    ^No problem. I am a technician at a dealership, and it pisses me off when people don't understand and automatically think we're always trying to rip them off.
    They DID rip him off! It takes what, 2 minutes to check the codes and they charged $90 for it?! It takes another 10-15 minutes to change the plug wires. So he got tagged for an hour's labor for a quarter hour's work? How is that NOT a rip-off?

    For future reference, NGK wires are under $50 including shipping (the stock wires are ~$60). ANYONE with a 10mm socket wrench to remove the engine cover and few functioning brain cells can install them.

    Remember, dealers and other service shops prey on people's ignorance and fear of working on their cars. For what Codycat paid the dealer, he could have bought wires, plugs and a LOT of tools that would save him more money in the future. The the complete service manuals for any late-model Hyundai are accessible free online at www.hmaservice.com. A few minutes spent educating oneself can save a fortune in overpriced - or unnecessary - repairs.

    I'm not trying to make Codycat or anyone else feel bad, but rather to encourge people to take the initiative and learn about their vehicles and how to maintain them. Not only will it save them money, but it's very satisfying to be "automotively self-sufficient".

+ Reply to Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts