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#4127978 - 11/17/21 12:05 AM The PING is here to stay :(
SDHOUHK07 Offline
Rookie

Registered: 03/22/20
Posts: 88
Loc: San Diego, CA
NO matter what I do, the pinging on my Crown Vic is persistent especially when flooring it after reaching operating temp. I downgraded the plugs from Denso Iridiums to Mexican-made "OEM" Motocraft SP-493s. Gapped at .050 according to user who has a 1998 Grand Marquis who have stated that gap spec will stop the ping, to which he is greatly mistaken. I really don't know what to do at this point. Car will drive fine, gets me to where I need to go no problem.
_________________________
1998 Ford Crown Victoria LX HPP
-Medium Wedgewood blue metallic
-Dark denim blue leather interior
-LX HPP "BBS style" wheels

Mods so far:
-03-11 Defroster duct retrofit
-Sony XAV-AX1000
-2X JBL Club 8622F 6X8 in front doors
-Noico sound deadening material applied in both front doors
-USMEI Dual QC3.0 USB Charger Socket in place of OEM cigarette lighter
-Vleds 5K rear license plate bulb.
-Natika WD-011 Back up camera installed to the left of my California license plate
-Mercury Marauder factory subwoofer enclosure
-JBL Club 6X9 Rear deck speakers.

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#4127996 - 11/17/21 11:27 AM Re: The PING is here to stay :( [Re: SDHOUHK07]
AlleyG Offline
Climber

Registered: 04/28/14
Posts: 621
Loc: Raleigh, NC
It's in the MAF. IF it is dirty, clean it with electrical or MAF cleaner. If it is not dirty, replace it. It usually takes running a K&N filter to make them dirty.

I found Autozone has the Delphi brand, which is a good brand. Ordered online with a 20% off deal, and either get free delivery or pick it up in the store.

FYI, there is already an active thread on this subject.

Al
_________________________
2004 CVPI - 99k miles - RIP
1997 T-Bird LX - 92k miles
1994 Supra Turbo - 110k miles
Previous Fords:
1988 T-Bird, 1995 T-Bird, 1996 Cougar

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#4128072 - 11/17/21 11:57 PM Re: The PING is here to stay :( [Re: AlleyG]
SDHOUHK07 Offline
Rookie

Registered: 03/22/20
Posts: 88
Loc: San Diego, CA
Originally Posted By AlleyG
It's in the MAF. IF it is dirty, clean it with electrical or MAF cleaner. If it is not dirty, replace it. It usually takes running a K&N filter to make them dirty.

I done did that about 3 times already in a period of 16 months since I bought the car during the early stages of the "pandemic"

I found Autozone has the Delphi brand, which is a good brand. Ordered online with a 20% off deal, and either get free delivery or pick it up in the store.

Don't need to throw parts at it, unless its a $1.00 a pop for a MAF sensor.

FYI, there is already an active thread on this subject.

I'm sure there is, but I need my particular ping case to be looked at. And if such active thread is going on, did 90% of them came to undeniable conclusion that it was the MAF sensor?

Al
_________________________
1998 Ford Crown Victoria LX HPP
-Medium Wedgewood blue metallic
-Dark denim blue leather interior
-LX HPP "BBS style" wheels

Mods so far:
-03-11 Defroster duct retrofit
-Sony XAV-AX1000
-2X JBL Club 8622F 6X8 in front doors
-Noico sound deadening material applied in both front doors
-USMEI Dual QC3.0 USB Charger Socket in place of OEM cigarette lighter
-Vleds 5K rear license plate bulb.
-Natika WD-011 Back up camera installed to the left of my California license plate
-Mercury Marauder factory subwoofer enclosure
-JBL Club 6X9 Rear deck speakers.

Top
#4128082 - 11/18/21 12:23 PM Re: The PING is here to stay :( [Re: SDHOUHK07]
AlleyG Offline
Climber

Registered: 04/28/14
Posts: 621
Loc: Raleigh, NC
I guess you'll have to look at the thread. People never follow up with good news, they only [censored] when there's a problem.

On my 94-97 T-Birds and Cougar, it was always the MAF that caused it. The MAF is not getting a good reading, so less fuel is injected in, causing a slightly lean A/F mixture, and pinging. It's a common problem with the older Fords.

In my most recent case, I wasted enough money on 89 octane over a year that I could have paid for a MAF. So I finally forked over the $110, and no more pinging.

So either buy a MAF, or start running 89 octane. Or don't do anything. Or spend the MAF money on a mechanic's diagnosis.

Al
_________________________
2004 CVPI - 99k miles - RIP
1997 T-Bird LX - 92k miles
1994 Supra Turbo - 110k miles
Previous Fords:
1988 T-Bird, 1995 T-Bird, 1996 Cougar

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#4128164 - 11/19/21 08:05 PM Re: The PING is here to stay :( [Re: SDHOUHK07]
Bellwestern80 Offline

CVN Discord: Edsel
Over the Hill

Registered: 07/01/11
Posts: 4089
Loc: Evans, Georgia
I can get my '97 to ping on hard accel if it's hot.

I used to get pinging all the time and found it was the MAF. That calmed it down quite a bit.

If the MAF doesn't solve it, try a single heat range lower spark plug.
_________________________

My Cars:
-1964 Mercury Comet 202 (116K Miles | 170 I6) - Restoration Project
-1986 Dodge D-150 Royale SE (112K Miles | 360 V8) - Waiting on a TorqueFlite
-1987 Mercury Colony Park LS (330K Miles | H.O. 302) - March 2017, November 2019, & September 2021 POTM Winner
-1997 Mercury Grand Marquis LS (230K Miles | nPI 4.6) - The Daily Workhorse & April 2013 POTM Winner

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#4128168 - 11/19/21 09:07 PM Re: The PING is here to stay :( [Re: SDHOUHK07]
Lance01 Offline
Climber

Registered: 04/02/18
Posts: 539
Loc: Pa
Well, you got to do something as engine detonation isn't good for the engine in the long run.


As far as MAF sensor, I used FORScan to see the actual voltage readings. All was in range, but after cleaning I did see improvement in voltage, and when I switched to a lower mileage junkyard MAF sensor it had a noticeable impact in acceleration.

I never thought to buy a new Motorcraft MAF sensor because during the time I had ping issues they were going for 350$ ( complete housing) but I just checked again and now I can get a new Motorcraft MAF sensor (just the sensor alone) for 150$ so I just might buy it for s$$$t and giggles.



Edited by Lance01 (11/19/21 09:09 PM)

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#4128422 - 11/22/21 06:12 PM Re: The PING is here to stay :( [Re: SDHOUHK07]
Tenevic_P71 Offline
Over the Hill

Registered: 08/27/15
Posts: 1122
Loc: US
Monitor live data on a scan tool. See MAF reading and fuel trims to determine if there is a lean condition.
_________________________
2006 P71 119k miles, 3.55 traclock

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#4128546 - 11/23/21 12:08 PM Re: The PING is here to stay :( [Re: SDHOUHK07]
SYRPanther Offline
Stranger

Registered: 11/22/21
Posts: 3
Loc: Syracuse, NY, USA
This is going to sound crazy - but have you checked the DFPE sensor and EGR operation?

I went through this for 50,000 miles on my old 01 Taurus. Thankfully it was under warranty, but it was at a time before a lot of mechanics (even dealer ones) knew how to troubleshoot OBDII vehicles.

It pinged awfully once warm. Always felt like it was running super lean. And it would misfire a bit when at part throttle cruise.

They did a lot of stuff under warranty. Reprogram the computer numerous times, replace computer, "induction service", replaced a bunch of sensors, checked that timing was right, colder thermostat, no thermostat, 93 octane gas.

This happened from 19000 miles (when it was bought used with Ford's warranty) all the way up to 72000 miles.

One day it threw an EGR code. Replaced the DFPE sensor and it never pinged again.

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#4128772 - Yesterday at 02:22 AM Re: The PING is here to stay :( [Re: SDHOUHK07]
732t37 Offline
Stranger

Registered: 07/19/14
Posts: 7
Loc: NJ & OH
By all means check your MAF, as they can and do frequently go bad-

...but there are dozens of other things it could be, all of which need to be looked at objectively with facts and data before the parts cannon is fired up.

Remember to check for TSB's too, the factory is not perfect either!

I have little of anything useful to add, just wanted to commiserate as I'm dealing with a similar problem atm.
_________________________
DD: 2004 Grand Marquis GS Convenience (M74), all stock except for a Fumoto valve.

Past Panthers: 99 Vic (P71); 92 Grand Marquis GS (M74)

Current non-Panther Fords: 92 F-450, 79 F-250, 01 Ranger

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