Same here, Mobil for me. Actually, when I had stock PCM even with Mobil, at
times, pinged with 87. I found it was easier just to use 89 all the time.
That eliminated the problem. With the HP PCM I've only encountered pinging
with one tankful (also Mobil). This was 92 octane. The temperature outside
had cooled down about 15 degrees so if anything it should not have been
pinging. I think sometimes it's just crappy gas. For the Labor Day weekend
my Mobil station just raised its prices for 92 octane to $1.94/gallon.
Isn't supply/demand wonderful?!?
;-P
Ron
00 SLT QC 4X2 5.9 46RE 3.92 LSD
For modifications see my DML Profile
-----Original Message-----
From: owner-dakota-truck@buffnet.net
[mailto:owner-dakota-truck@buffnet.net]On Behalf Of Jon Steiger
Sent: Saturday, September 02, 2000 10:01 PM
To: dakota-truck@buffnet.net
Subject: Re: DML: RE: Pinging Question...
At 09:22 PM 9/2/00 -0700, you wrote:
>Pinging seems to be a common occurrence in all the Dak engines.
Elimination
>of this problem has been accomplished by one or more of the following
common
>solutions. There may be other solutions as well.
>
>1) Changing the spark plugs to a colder plug (Autolite 3923's).
>
>2) Having your PCM re-flashed by the dealer. This effectively retards your
>timing. You may feel a loss of power after this is done.
>
>3) Changing to 89 octane gasoline.
>
>4) Changing to a different brand of gasoline.
I never got any pinging with the stock computer, but I did get it with
the MP PCM, even with 92-93 octane. A 180 degree thermostat fixed the
problem for me. I also make sure to never fill up at a Coastal station as
the local one would cause pinging every time. I almost exclusively go to
Mobil stations. (Yeah, it probably all comes off the same truck, but I've
had good luck with Mobil so far.) :-)
-Jon-
.--- Jon Steiger ---- jon@dakota-truck.net or
stei0302@cs.fredonia.edu ---.
| Affiliations: AOPA, DoD, EAA, NMA, NRA, SPA, USUA; Rec & UL Pilot - SEL
|
| '92 Ram 150 4x4 V8, '96 Dakota V8, '96 Intruder 1400, '96 FireFly 447
|
`------------------------------
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