Check Engine Light, Horrible Mileage

The Toad

Light won't go out on the F150, took her to Rocky's for a scan, he didn't find any codes
I filled up on friday, an was empty by Tuesday
runs a little rougher than usual also
_________________
"If we ever forget that we're one nation under God, then we will be a nation gone under."- Ronald Reagan
1981 AMC Eagle Kammback Iron Duke
1983 AMC Eagle Wagon 258
1976 AMF Crestliner Crusader 770 135HP Johnson 2 Stroke V4
1984 Honda V65 Saber VF1100
1995 Ford F150 XLT 302

bowtie6872 · Posted: Thu Jul 02, 2009 1:23 pm Post subject:

IF THE LIGHTS ON THERE IS A CODE..
unhook the + batt cable for 5 minutes.. and then drive around..
light come back on??
there is a code

Orange95Z · Posted: Thu Jul 02, 2009 3:23 pm Post subject:

Does the odometer work? Have you ever checked your MPG. Sometimes I have to fill up twice a day, must be a leak somewhere Rolling Eyes

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Matt.

fordguy · Mad Scientist Joined: 24 Apr 2007 Posts: 7241

i think there is a screw loose behind the wheel.
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The Toad · Posted: Thu Jul 02, 2009 5:25 pm Post subject:

I did that, the light still came on

my dad said he checked the radiator the other day and it was near empty, which is very weird
_________________
"If we ever forget that we're one nation under God, then we will be a nation gone under."- Ronald Reagan
1981 AMC Eagle Kammback Iron Duke
1983 AMC Eagle Wagon 258
1976 AMF Crestliner Crusader 770 135HP Johnson 2 Stroke V4
1984 Honda V65 Saber VF1100
1995 Ford F150 XLT 302

OldUsedParts · Posted: Thu Jul 02, 2009 6:46 pm Post subject:

mpg is a no brainer like Matt said - - - it doesn't have anything to do with the number of days just the number of miles Wink

if it's running ruff then that may be your mpg problem but you need to check it with gallons vs miles to know for sure

sometimes when a Chick has been in the cab, it will get poor gas mileage too Twisted Evil

_________________
"The ideal Healthcare Bill will come when the Congress and the President
are required to participate in it also!"

fordguy · Mad Scientist Joined: 24 Apr 2007 Posts: 7241

did all this start when you hacked off the exhaust and put a glass packed on it?
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The Toad · Posted: Thu Jul 02, 2009 7:33 pm Post subject:

It happened when I got the suspension fixed
took her to that mechanic, he said the truck has a case of the eversinces "ever since you..."
more than full 18 gallon tank, one trip to DE, = half tank?
_________________
"If we ever forget that we're one nation under God, then we will be a nation gone under."- Ronald Reagan
1981 AMC Eagle Kammback Iron Duke
1983 AMC Eagle Wagon 258
1976 AMF Crestliner Crusader 770 135HP Johnson 2 Stroke V4
1984 Honda V65 Saber VF1100
1995 Ford F150 XLT 302

fordguy · Mad Scientist Joined: 24 Apr 2007 Posts: 7241

speed density doesnt respond to mods like mass air does. could it be the glasspacked is throwing it off?
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OldUsedParts · Posted: Thu Jul 02, 2009 7:57 pm Post subject:

The Toad · Posted: Thu Jul 02, 2009 8:05 pm Post subject:

my dad thought the tank was empty (I've been running off the front tank), and poured the left over gas for the mowers in it and it overflowed

I was just hit by a thought, I barely ever used the front tank until recently, could filling up both tanks have clogged up the fuel filter when it stirred stuff up?
_________________
"If we ever forget that we're one nation under God, then we will be a nation gone under."- Ronald Reagan
1981 AMC Eagle Kammback Iron Duke
1983 AMC Eagle Wagon 258
1976 AMF Crestliner Crusader 770 135HP Johnson 2 Stroke V4
1984 Honda V65 Saber VF1100
1995 Ford F150 XLT 302

bowtie6872 · Posted: Fri Jul 03, 2009 7:48 am Post subject:

empty rad.
you more than likely overheated it..
if the rad was almost empty you got a leak..
keep an eye on the level.. and keep a gallon of water behind the seat..
you might have warped a head..
compression test..

OldUsedParts · Posted: Fri Jul 03, 2009 8:49 am Post subject:

NEVER let your gas tank/tanks run completely empty - - - if you do then you are just asking for trouble Exclamation

leftover lawn mower gas
dual tanks
never totally topped off
FORGET about computing your MPG, Kiddo
_________________
"The ideal Healthcare Bill will come when the Congress and the President
are required to participate in it also!"

spidergearsman · Posted: Fri Jul 03, 2009 9:53 am Post subject:

no codes with a check engine light ?
grounded ecm = could get expensive
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The Toad · Posted: Fri Jul 03, 2009 5:27 pm Post subject:

I always watch my gauges, she never overheated since I changed the thermostat/gasket a year ago, although I had to get to work then, so I took the ST and my dad finished it for me, he said he used 2 gaskets
_________________
"If we ever forget that we're one nation under God, then we will be a nation gone under."- Ronald Reagan
1981 AMC Eagle Kammback Iron Duke
1983 AMC Eagle Wagon 258
1976 AMF Crestliner Crusader 770 135HP Johnson 2 Stroke V4
1984 Honda V65 Saber VF1100
1995 Ford F150 XLT 302