Re: 1990 V8 Fuel Injection issue

I run Techron about every 10th tank or so. I should add that this issue 
occurred very suddenly, and is also intermittent. I can be driving at 70
mph 
show 12 - 14 mpg on the level and then suddenly the mileage jumps up to 
21 -22 mpg.  Overall average for the past 200 miles has been in the 11 -
12 
mpg range, prior to that it was always in the 21 - 24 mpg  avg. for
freeway 
speeds.
"TonyJ" <tonyj@[EMAIL PROTECTED]
> wrote in message 
news:13sbul2liecaqbd@[EMAIL PROTECTED]
>
>
> Bill Mote wrote:
>> The fuel economy on my car has gone approximately in half. Went from 
>> around 22 mpg at 70 mph to around 10 to 11.  I replaced the temp
sensor, 
>> checked the mass air flow sensor, checked the idle speed motor? and
have 
>> cleaned the throttle body. Also replaced the air filter all to no
avail. 
>> No codes in computer.
>> What am I missing??
>>
>> Many thanks
>> Bill
>>
>>
>>
> Winter fuel blends.
>
> May have dirty injectors with poor spray pattern. Try some Techron 
> injector cleaner.