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Pinging

  • Thread starter Thread starter slow88stang
  • Start date Start date Mar 28, 2004

slow88stang

New Member
Jun 20, 2003
144
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0
St Albert AB
Mar 28, 2004
#1
  • Mar 28, 2004
  • #1
Maybe a stupid question but what does pinging sound like. My car makes a wierd noise when accelerating but i dont know what it is.
 

dastang2

Active Member
Dec 11, 2003
2,020
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46
tx
Mar 28, 2004
#2
  • Mar 28, 2004
  • #2
it sort of sounds like a high pitched knocking noise or rattleing.
 

slow88stang

New Member
Jun 20, 2003
144
0
0
St Albert AB
Mar 28, 2004
#3
  • Mar 28, 2004
  • #3
well i guess the sound im hearing isnt that. i think its air screaming through my throtlle body., but ive never heard this in any other car. It really quite loud, i can hear it over the exhaust and stereo. my exhaust is louder than the average and the stereo will overpower so i think thats saying its pretty damn loud. any ideas whay that would be happening?
 

jrichker

StangNet's favorite TOOL
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Mar 10, 2000
27,512
2,811
234
Dublin GA
Mar 29, 2004
#4
  • Mar 29, 2004
  • #4
If it sounds like a bunch of marbles ratting in a coffee can, its pinging.

Pinging is caused by a number of things:
1.) Hot spots in the combustion chamber such as carbon deposits from high mileage or excessive oil consumption.
2.) Wrong heat range on the plugs.
3.) Too much initial spark advance.
4.) Lean fuel mixture.
Lean fuel mixture breaks out into several sub categories:
A. Vacuum leaks
B. Air entering the intake without passing through the MAF
C. Failure of the MAF, BAP/MAP (Baro or Manifold Air Pressure, same sensor, different name), ACT (air charge temp), or ECT (engine coolant temp). These should set a code in the computer.
D. Leaking exhaust gases from EGR valve at WOT.
E. Clogged fuel injectors.
F. Fuel injector wiring problems causing injector not to deliver rated flow.
5.) Computer problems: (computer problems are not common like sensor problems)
A. ROM has bad data in fuel or timing table. This should also set a code in the computer.
B. Failure of one or more of the computer's driver transistors for the fuel injectors. No code set on this one.

Have you dumped out the codes?
Here's the link to dump the computer codes with only a jumper wire and the check engine light. I’ve used it for years, and it works great.
See http://www.batauto.com/Ford/
OR
See http://www.dalidesign.com/hbook/eectest.html for more descriptive help
OR
See http://www.mustangworks.com/article...c-iv_codes.html
 

88stangmangt

Active Member
Nov 25, 2003
2,332
1
48
Stafford,VA
Mar 29, 2004
#5
  • Mar 29, 2004
  • #5
could be a exhaust leak.
 
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