I too have had pinging issues with regular gas in my '91. Premium was fine. I
suspect that even if you do not have knocking with regular, there will be a
power loss as the PCM compensates for the lower grade of gas.
-Ron
----- Original Message ----
From: Steven W. Riggins <mailinglists@geeksrus.com>
To: shotimes@autox.team.net
Sent: Wednesday, July 5, 2006 7:44:18 AM
Subject: Re: [Shotimes] Poor mileage
I put 87 (the middle grade) in it once and had a lot of knocking and
pinging, back in 2000, so I went right back to 92. Why could that
have been?
it has the original O2 sensors. Air filter is new within the last 4
months. Plugs and wells (whatever those are) are original.
Not much has been done to it other than oil, fuel filter, air filter,
brake, tranny flush, etc (had a lurching problem that the flush
cleared up)
Oh yeah, its an ATX as well.
Steve
On Jul 5, 2006, at 6:47 AM, Ian Fisher wrote:
> How old are the oxygen sensors? Any maintenance
> performed? Air filter? plugs? oil in plug wells?
>
> Ian
>
> --- Rick Glass <cmysho@comcast.net> wrote:
>
>> I would start with dropping the supreme and start
>> running 87 octane.......it
>> may not seem to get better mileage off of the first
>> few tanks, but it will
>> improve after a couple of tanks. Fuel costs too
>> much as it is, why give the
>> extra $$$$ away.
>>
>>
>> Rick Glass
>> '99 SF 98k Flowmasters Kirk'd
>>
>> ----- Original Message -----
>> From: "Steven W. Riggins"
>> <mailinglists@geeksrus.com>
>> To: <shotimes@autox.team.net>
>> Sent: Tuesday, July 04, 2006 10:57 PM
>> Subject: [Shotimes] Poor mileage
>>
>>
>>> Hi again. Thanks for all of your input last time
>> :)
>>>
>>> My 97 has been seeing lower and lower milage, esp
>> in the city. Since I
>>> just got the wheel bearing fixed (which has
>> removed all sounds I was
>>> hearing as well as showing the same temps on the
>> rear discs for 5 days
>>> now), my in-city mileage has been a paulry
>> 14.6-15.5 mpg.
>>>
>>> My cams are not fixed yet, but I don't know if any
>> slippage could occur
>>> and still have the car run at all :) I don't
>> notice any rough running,
>>> etc.
>>>
>>> There have been times where I've noticed a very
>> rich fuel odor after
>>> idling in the garage when I arrive, or leave.
>> more so when its cold
>>> (outside and engine cold)
>>>
>>> I had the fuel filter changed a couple of months
>> ago. I run Chevron
>>> supreme and mobil 1 10-30.
>>>
>>> What are some of the leading causes? I know I
>> never got over 18-19 when
>>> she was new, but 15 is kinda lame :)
>>>
>>> Steve
>>> _______________________________________________
>>> Shotimes mailing list
>>> Shotimes@autox.team.net
>>> http://www.team.net/mailman/listinfo/shotimes
>> _______________________________________________
>> Shotimes mailing list
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