Please stop the pinging! - DodgeIntrepid.Net Forums - Dodge Intrepid, Concorde, 300m and Eagle Vision chat
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post #1 of 19 (permalink) Old 01-28-2007, 11:09 AM Thread Starter
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Please stop the pinging!

Trying to get rid of the incessant pinging while accelerating on my 97 3.5L that I've been listening to for the last 80K miles or so. I've replaced the EGR, run 89 octane, 93 octane, injector cleaner, seafoamed the engine a couple times. Would both knock sensors be hosed and not throwing codes? Especially at the low milage this started at? I'd hate to pull the plenum off and spend 45 bucks on new sensors and still not solve this... This is a quest!
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post #2 of 19 (permalink) Old 01-28-2007, 01:26 PM
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i see you've mentioned different fuels, egr, and cleaners.. but have you tried replacing or regapping your sparkplugs?
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post #3 of 19 (permalink) Old 01-28-2007, 02:33 PM
 
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yeah plugs are a must. most say go with oem champions, but i went with bosch iridium.
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post #4 of 19 (permalink) Old 01-28-2007, 04:28 PM Thread Starter
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I'll try it tonight and see what happens...

If Autozone or ORiley are open I'll try that tonight, and let you know..
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post #5 of 19 (permalink) Old 01-28-2007, 11:18 PM Thread Starter
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New plugs- No difference

Changed the plugs this afternoon (Champion rc12lyc copper plus (OEM)). What a bitch to get the plugs to disconnect from the plug wire tips on a few... Gaps were between .035 and .057 on old Autolite Platniums. I was extremely pleased with the color of the plugs, white with s little light grey near the tip, no signs of detonation, etc. She needed them anyway though, test drove it and THE PINGING continues! What else could it be??? I'm getting great mileage, No other issues with the motor at all.

Last edited by rob4; 01-28-2007 at 11:24 PM.
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post #6 of 19 (permalink) Old 01-30-2007, 02:03 PM Thread Starter
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Anyone?

No Ideas guys?
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post #7 of 19 (permalink) Old 01-31-2007, 12:26 PM
 
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The knock sensors are small plastic rectangles attached to clips on the side of the block.
They have to physically slid onto the clips, because these piezo-electric sensors have to FEEL the pinging vibrations to tell the ECU to retard timing(temporarily) to alleviate the detonation.
See if they're dangling around somewhere...
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post #8 of 19 (permalink) Old 02-01-2007, 07:49 PM
 
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Quote:
Originally Posted by alarkyokie
The knock sensors are small plastic rectangles attached to clips on the side of the block.
They have to physically slid onto the clips, because these piezo-electric sensors have to FEEL the pinging vibrations to tell the ECU to retard timing(temporarily) to alleviate the detonation.
See if they're dangling around somewhere...

The 2 Knock Sensors on the 1st gen 3.5L are threaded into the cylinder block, below the intake manifold. The Plenum and Intake Manifold must be removed to gain access to the sensors.
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post #9 of 19 (permalink) Old 02-01-2007, 08:03 PM
get off my lawn

 
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pinging is caused by a few things,, poor fuel,, lean running,,, incorrect timing,
have you ever had the timing belt replaced?
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post #10 of 19 (permalink) Old 02-01-2007, 10:48 PM Thread Starter
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still pinging

Yeah, replaced the timing belt when I did the water pump. Pinging before, pinging after.

Fuel filter? (origional)
Air filter?
vaccuum leak (intake, etc?)
plug wires? (origional from 1997)
carbon build up? (Seafoaming made white smoke only). Running up to 4 grand does not smoke.

What are the chances it's the knock sensors at this point? I mean, wouldn't that be slim, since I have no codes, and there are two of them?

I'm getting 21 mpg mixed city/hwy driving. Pinging is during acceleration, not loud knocks, definitely a pinging. Everything else ir good. This is driving me nuts...
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post #11 of 19 (permalink) Old 02-01-2007, 11:01 PM
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Be sure to gap plugs at 0.35 per the TSB that was issued a while back. Use copper champions only. Be sure to replace the plug wires as well.
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post #12 of 19 (permalink) Old 02-01-2007, 11:01 PM
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If it's not broke why fix it? If the spark plugs looked fine and there is still a constant pinging then I would not guess a detonation problem.
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post #13 of 19 (permalink) Old 02-01-2007, 11:27 PM
get off my lawn

 
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ok so we know its in time,, does it idle ok? around 5-800 rpm in drive?
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post #14 of 19 (permalink) Old 02-02-2007, 07:49 AM
 
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Quote:
Originally Posted by Justin
The 2 Knock Sensors on the 1st gen 3.5L are threaded into the cylinder block, below the intake manifold. The Plenum and Intake Manifold must be removed to gain access to the sensors.
Well, there you are. I missed the 1st gen part...
Let's move the thread appropriately..
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post #15 of 19 (permalink) Old 02-02-2007, 04:45 PM
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ping rob4 -t

oh, sorry, you asked to stop
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