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  #1  
Old 10-28-2014, 03:41 PM
tharnes tharnes is offline
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Default 3.0 Knock/Ping

I have a mystery noise in my 2002 3.0 Edge 2WD. I first started noticing what I thought was a "ping" at idle only, and it was fairly quiet. Then one day while idling in park, the noise got very loud. The best way I could think to describe it would be a steady "metallic clanking" noise. The noise was steady and seemed to be coming more from the bottom end but who knows. Also the CEL light was flashing at the time. I have noticed that every time I have heard the quiet noise or the loud one the truck was idling at a down hill angle. I have replaced the plugs, wires, and coil with motor craft parts. Also there were no codes after I restarted the engine and the noise went away. Now I can only hear the noise 3-4 times when in park and I rev up to 3K and suddenly let off the throttle.

Please help with your suggestions,
Thanks
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  #2  
Old 10-28-2014, 04:42 PM
rangerlocal rangerlocal is offline
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Default Re: 3.0 Knock/Ping

Cam sync ever been changed?
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2000 Ranger XL, 2WD, 3.0l, 3.73 rear, 10" rear drum ABS, standard cab, long bed, A/C, 4r44e auto trans w/transgo shift kit, throttle cable mod, air box silencer mod, rear sway bar retrofit, white grill swap, CURT hitch, Westin step bars
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  #3  
Old 10-29-2014, 08:37 AM
tharnes tharnes is offline
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Default

Not to my knowledge
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  #4  
Old 10-29-2014, 09:00 AM
rangerlocal rangerlocal is offline
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Default Re: 3.0 Knock/Ping

See if a metallic squeaking sound is coming from the back side of the engine on the passenger side.

Also, how many miles on the truck?
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2000 Ranger XL, 2WD, 3.0l, 3.73 rear, 10" rear drum ABS, standard cab, long bed, A/C, 4r44e auto trans w/transgo shift kit, throttle cable mod, air box silencer mod, rear sway bar retrofit, white grill swap, CURT hitch, Westin step bars
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Man wish i had tits, seems like its easier to get a job if you have tits.
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  #5  
Old 10-29-2014, 04:47 PM
tharnes tharnes is offline
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The noise isn't a squeal and 160K
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  #6  
Old 10-30-2014, 12:11 AM
GLH GLH is offline
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If the cam sync has never been changed, change it.
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  #7  
Old 10-30-2014, 11:57 AM
RedEdge03 RedEdge03 is offline
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Default Re: 3.0 Knock/Ping

Can I please jump in a minute? I was just going to post about MY '03s pinging:
Just bought a very nice, clean '03 Edge (w/3.0 Flex Fuel) and I can hear a faint spark knock while driving at higher (highway speeds) very sure its spark knock, been reading about the cam synchro on these engines..........so there is no actual way to adjust the timing besides to replace the syncro unit? (Thanks!)

BTW: 88k miles and strongly believe the syncro unit to be original.

My engine runs really smooth. so there is NO way to adjust the timing on my original syncro?

Last edited by RedEdge03; 10-30-2014 at 12:17 PM.
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  #8  
Old 10-30-2014, 12:33 PM
rangerlocal rangerlocal is offline
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Default Re: 3.0 Knock/Ping

Nope. All computer controlled.

That being said, these engines are very prone to "pinging", or lifter noise under loads as well. Unless it's severe, Ford says it's normal and recommends an intake and combustion chamber cleaning.

Try seafoaming the intake and see if it helps.
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Man wish i had tits, seems like its easier to get a job if you have tits.
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  #9  
Old 10-30-2014, 01:01 PM
RedEdge03 RedEdge03 is offline
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Default Re: 3.0 Knock/Ping

Gotcha! Thanks! So, what kind of warning will I get if/when the cam syncro is about to fail?

----------

-Wonder if original spark plugs with 88k on them might also cause my slight pinging? I've heard all this 100k tune up stuff, just not a true believer YET....
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  #10  
Old 10-30-2014, 01:31 PM
tharnes tharnes is offline
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Default Re: 3.0 Knock/Ping

What are the symptoms of a bad cam sync? I don't know if the previous owner replaced it or not and I can't afford to throw parts at it till it needs it. Hard to justify a $90 part that might not fix anything.
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  #11  
Old 10-30-2014, 04:00 PM
GLH GLH is offline
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If the cam sync goes, the engine is toast. It turns the oil pump. Is it worth $90 ?
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  #12  
Old 10-30-2014, 04:19 PM
rangerlocal rangerlocal is offline
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Default Re: 3.0 Knock/Ping

Symptoms of cam sync going:

1. Misfire or missing over 3k RPM.
2. Squealing, squeaking, or chirping that increases with engine RPM. Originating from the back passenger side.

88k on original plugs? Yep, change them. One side is single platinum because of the waste spark system. That side will probably be due for replacing. I do mine every 30k because I use normal Autolite single platinums, but double platinum I let go until 60k. I never let them go to 100k.
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2000 Ranger XL, 2WD, 3.0l, 3.73 rear, 10" rear drum ABS, standard cab, long bed, A/C, 4r44e auto trans w/transgo shift kit, throttle cable mod, air box silencer mod, rear sway bar retrofit, white grill swap, CURT hitch, Westin step bars
Quote:
Originally Posted by writtenaudio View Post
Man wish i had tits, seems like its easier to get a job if you have tits.
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  #13  
Old 10-31-2014, 03:02 PM
tharnes tharnes is offline
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Any other ideas on what my noise is?
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  #14  
Old 11-03-2014, 07:21 AM
RedEdge03 RedEdge03 is offline
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Default Re: 3.0 Knock/Ping

Quote:
Originally Posted by rangerlocal View Post
Symptoms of cam sync going:

1. Misfire or missing over 3k RPM.
2. Squealing, squeaking, or chirping that increases with engine RPM. Originating from the back passenger side.

88k on original plugs? Yep, change them. One side is single platinum because of the waste spark system. That side will probably be due for replacing. I do mine every 30k because I use normal Autolite single platinums, but double platinum I let go until 60k. I never let them go to 100k.
So, The factory put in 2 different styles of plugs from the get go?
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  #15  
Old 11-03-2014, 11:22 AM
rangerlocal rangerlocal is offline
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Default Re: 3.0 Knock/Ping

Quote:
Originally Posted by RedEdge03 View Post
So, The factory put in 2 different styles of plugs from the get go?
Yep. Single plats on one side, double plats on the other.
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2000 Ranger XL, 2WD, 3.0l, 3.73 rear, 10" rear drum ABS, standard cab, long bed, A/C, 4r44e auto trans w/transgo shift kit, throttle cable mod, air box silencer mod, rear sway bar retrofit, white grill swap, CURT hitch, Westin step bars
Quote:
Originally Posted by writtenaudio View Post
Man wish i had tits, seems like its easier to get a job if you have tits.
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