pinging at idle

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ponypowa2

New Member

May 17, 2004

228

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Destin, FL

Jul 6, 2004

#1

• Jul 6, 2004

• #1

Hey all, my engine has been pinging on and off at idle only... it sounds as though it is coming from near the alternator ( I dont think the alternator is bad, been replaced not to long ago). I run 93 octane gas and am stumped, retarding the timing does not help either.. has anyone encountered problems like this?

 

HISSIN50

"How long does it take to get help in here?

15 Year Member

Nov 29, 1999

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129

Jul 6, 2004

#2

• Jul 6, 2004

• #2

have you checked your EGR? it should not be open at idle - if the solenoid malfunctions, it will introduce spent gasses at idle - the idle will deteriorate noticably and timing will shoot through the roof.

if you just think it is a bearing in an accessory (not pinging, or preignition or detonation), set a stethoscope or long screwdriver. be really careful, and put your ear to the stethoscope/screwdriver handle while touching different accessories. you can hear what is 'goin on inside' the various accessories. again, be careful.
good luck.

 

Rootus

Officially Addicted

Feb 8, 2003

6,659

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Portland, Oregon

Jul 6, 2004

#3

• Jul 6, 2004

• #3

Very unlikely (perhaps impossible) to be detonation at idle. Perhaps valvetrain noise? What are your mods?

Dave

 

GTJake

Founding Member

Oct 28, 2002

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Ann Arbor, MI

Jul 7, 2004

#4

• Jul 7, 2004

• #4

I bet it's the tensioner clanking.

Jake

 

G

greg@berkeley

Founding Member

Aug 30, 2002

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minnesota / university of california, berkeley

Jul 7, 2004

#5

• Jul 7, 2004

• #5

GTJake said:

I bet it's the tensioner clanking.

Jake

Click to expand...

 

P

ponypowa2

New Member

May 17, 2004

228

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0

Destin, FL

Jul 7, 2004

#6

• Jul 7, 2004

• #6

I fixed the tensioner awhile back The noise seems to be coming from the alternator (used a screwdriver) but wouldn't it make noise all the time? My car is mostly stock from what I can tell. Previous owner seems to have replaced the mid-pipe, and I have put U/D pulleys and a cold air kit on thus far.

 

P

ponypowa2

New Member

May 17, 2004

228

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Destin, FL

Jul 7, 2004

#7

• Jul 7, 2004

• #7

Ill check the egr... where is the egr btw, my manual is not showing it equipped on a 5 liter

 

P

ponypowa2

New Member

May 17, 2004

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Destin, FL

Jul 7, 2004

#8

• Jul 7, 2004

• #8

any ideas folks?

 

Mrgreen94gt

SIMMA DA NA!!!

Founding Member

Jul 16, 2002

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West TN

Jul 7, 2004

#9

• Jul 7, 2004

• #9

Mine got to where it would ping at about idle speed, not exactly at idle. If I revved the motor up to about 900 or so to get a little more battery charge there would be some pinging. It went away when the new balancer and plugs went in, so I'm not sure which was causing it.