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2001 sable ping no code

I have a 2001 Mercury Sable LS with a 3.0L DOHC engine. During initial acceleration when the engine is warm, I hear a loud pinging that sounds like spark knock to me, but only for about a second or so. I've checked the vacuum lines and they are in good shape. The engine is pulling 17 in-hg of vacuum at idle. The EGR valve is holding vacuum as well. I checked the resistance on the EGR solenoid, which should be 20 ohms, and it was 38 ohms. Is that enough to make that much of a difference? The engine is not missing, as far as I can tell, and the check engine light has not come on at all. I also have a light ticking sound while driving, quiet enough that I'm still not sure I'm not imagining it. Any help would be appreciated.

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  • 3 more comments 
  • n00blet
    n00blet Jul 14, 2013

    Still hoping someone out there can answer my question....

  •  Brad
    Brad Jul 14, 2013

    You may need to repost your question. I know less about how this site works than I'd like. But it seems that once anyone gives an answer to a quetion, that question is removed from the unanswered quick view list.And I can't figure out how other techs can find it & join the discussion. No help menu here. If you repost I'll not give an answer so some one else can.

  • n00blet
    n00blet Jul 15, 2013

    I figured it out: none of the above. power steering pump pulley had lost a chunk causeing the shaft bearing to go out, which explains why the noise wasn't quite right for what I was thinking.

  •  Brad
    Brad Jul 16, 2013

    Glad you got some satisfaction enve if we were no help.

  • n00blet
    n00blet Jul 16, 2013

    Some might say satisfaction, others might say facepalm lol

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  • Expert
  • 82 Answers

Many older Ford products don't have anti knock sensor circuit so most likely your hearing your cylinder valve's death rattle. Higher OCTANE gas will help. Break a valve junk the car.

Posted on Jul 13, 2013

  • 2 more comments 
  • n00blet
    n00blet Jul 13, 2013

    Thank you for your opinion. Does anyone have an answer for the question I posed?

  • n00blet
    n00blet Jul 13, 2013

    Also I just checked, and the car does have a knock sensor. I would think if there were a problem with it, the knocking would probably continue for longer than a second and I would get a DTC, but I could be wrong..

  •  Brad
    Brad Jul 14, 2013

    Loud pinging is a term often used for valve rattle. My 3L Ranger with out the Knock sensor will only ping for a sec. or 2 & only if I put my foot in to it hard. A heavy pull will also cause ping. Maybe your sensor is failing. If you believe it to be spark jump find a dark parking place, open hood & look for sparking while someone holds brake hard and pops the gas. Just something to ponder. Good Luck

  • n00blet
    n00blet Jul 14, 2013

    "Spark knock" is a common term for detonation. Perhaps I shouldn't have used that term. I don't believe an arcing spark plug/wire wouldn't necessarily make any noise (at least I have never encountered any that made any noise). I was really just curious to know whether that difference in resistance values on the EGR solenoid would make enough of a difference to cause detonation (thus the only ? in my post). Perhaps I came to the wrong place.

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: 2003 f150 supercrew 2wd 4.6 romeo has 62000

do not use any fuel additives at all. and only use 87 octane fuel nothing higher. 4.6 and 5.4 ford engines do have a pinging sound especially with a load. but it is normal

Posted on Sep 02, 2009

  • 327 Answers

SOURCE: engine pings when driving, replaced egr and egr

let me guess....... you are using regular 87 octane gas ? run it down to almost empty and fill it with super and see it it works you probably have about 100,000 miles on it the camshaft, lifters and valve springs, timing chain are all worn

Posted on Oct 02, 2010

  • 8 Answers

SOURCE: 2001 mercury sable 3.0 24V

I have the same problem few days ago, and still didn't find any solution. Can any one please help?????18

Posted on Jul 28, 2011

stewbison
  • 577 Answers

SOURCE: I have a 2003 ford focus that I have a pinging

Hello, Thomas. Check the knock sensor. This sensor is suppose to send signal to the computer if the engine start to knocking or pinging. The computer will change the setting on various other components to keep from doing this knocking or pinging. I remember in the older cars that weren't fuel injected but carbureted and had to burn high octane fuel. If one put low octane in the fuel tank the engine would knock/ping, and continue to run after the ignition was turned off. Try the knock sensor or do an diagnosis test on it. Look in your owner manual it tell how to self diagnosis test on you car. GB....stewbison

Posted on Sep 07, 2011

cansmo
  • 2431 Answers

SOURCE: I have a 2002 Mercury Sable with the 3.0 DOHC engine. The check engine light came on and the code read EGR system pressure feedback. I have put in a new EGR valve, pressure feedback sensor, solenoid,

The vacuum lines are incorrect,that or the EGR solenoid is restricted,causing the EGR to open

Posted on Sep 26, 2012

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