Question about 1999 Ford Expedition

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1999 ford expedition is running rich fuel air mixturehow do I adjust or fix problem.

Im only getting about 7 miles to the gallon

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Budd Staub

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  • 12 Answers

Any codes?

Posted on May 19, 2019


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SOURCE: 95 volvo 940 DL hesitates injector error codes 113, 212, 232

Check the fuse to the injector. If it is out or got wet, it could mimic these conditions. let me know what happens. I have an 85 model.

Posted on Jan 15, 2009


Jeff Hammack

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SOURCE: Ford Escort ZX2 Sport 1998 running too rich, heavy

check the MAP sensor and vaccum to the MAP sensor

Posted on Mar 20, 2009


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SOURCE: 1989 460 running rich

what type of fuel delivery carberator?

Posted on Jun 22, 2009


Liz Dale

  • 1 Answer

SOURCE: 1999 Ford Expedition won't start

How do i reset the fuel reset button 2001 expediton.

Posted on Jun 20, 2010


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SOURCE: how to change rear air suspension on 1999 ford

The air suspension can be a tricky thing to mess with. When we were looking to replace just one of the rear bags it was going to be costly. My husband did some checking around online and found
They offered great products at a great price and we were very pleased with the outcome of the replacement of the non air system. If you are replacing the entire system you are looking at a pretty penny. I would check Strutmasters out before you replace the air on your Expedition.

Posted on Jul 05, 2010

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My 2003 ford expedition service engine light is on an the code is reading p1132 what is wrong

P1132 = Lack of HO2S11 switch. sensor indicates rich.
The HO2S11 is the upstream oxygen sensor. ( upstream meaning it's before the catalytic converter.)
This sensor is telling the ECM, ( electronic control module ), to increase the fuel, which is why it's indicating RICH. ( the fuel/air mix ratio should be 1 part fuel, 14.7 parts air )
The most common reason for your issues are the following.
1. Dirty air filter.
2. Faulty/dirty idle air control valve.
3. Faulty/dirty MAF, ( mass air flow ), sensor.
Until you're able to get this fixed, you are going to get poor fuel efficiency

I hope this helps you.
Thanks, Donnie

Feb 20, 2011 | Ford Expedition Cars & Trucks

2 Answers

My expedition is a 5.4 two wheel drive eddie bauer the problem i "m having with it is that it started to waste more gas now. I get only ten miles to the gallon and before i would get about twelve...

The tune-up is a Fred Flintstone term,
meaning you got spark plugs or payed
for them and got nothing

You need new spark plugs
You need 2 new front O2 Sensors, if you
have 100,000 miles on them
You need the MAF Sensor Cleaned
A Clean Air filter
Correct fuel pressure
A properly working TPS Sensor
(throttle position sensor)
And other items.

See if you have all that done, and get back
I will evaluate your issues.

Do you have check lights on the dash
If so give us the codees

Feb 10, 2011 | 1999 Ford Expedition

1 Answer

My 2001 Ford Expedition is guzzling gas like no other. I have had a tune up, new tires and oil change. But I am still getting about 12 miles per gallon is there anything that I can do to get more MPG?

I have a 99 explorer with V8 that runs great! and I get
a whopping 13mpg. But it has high miles. So I was
going to change the catalytic converters as they may
have started to plug up. And any exaust restriction
will drop your mpg, even a bent tailpipe will cause a
drop. There are other possible reasons for this, such as the o2 sensor sending a signal to the pcm calling
for a more fuel rich, air fuel mix than neccesary. Or
the temp sensor failing to signal that the engine is
at operating temp, and stays to some degree in cold
start mode. But either of these conditions would be
noticed through dtc codes- a smell or engine performence. I hope I was of some help.
Good luck.


Feb 07, 2010 | Ford Expedition Cars & Trucks

2 Answers

What controls how to make it not run so rich? sometimes it only gets 5 miles to a gallon of gas. Then it will run just fine for a while


Aug 03, 2009 | 1994 Ford Ranger Supercab

1 Answer

1999 Ford Expedition new engine uses twice as much gas

Engine is still tight.After being run in, it should be the same fuel consumtion

Jun 28, 2009 | 1999 Ford Expedition

1 Answer

On my last fill up i pumped 33 gallons, when previous fill ups were less than 26 gallons. I have a 1999 expedition Eddie Bauer. I thought I had a 26gal tank, since with the warning light on and saying 10...

The 99 expedition comes with a 26 gal tank as standard equip. and there is an optional 30 gal available. I suspect the gas pump you used is not accurate, and needs to be recalibrated. I think it's just a coincidence that the gauge is acting up now. Hopefully I'm wrong, and by some miracle you actually are now getting 300 miles on a half tank of gas! You may have a bad sending unit, this would result in inaccurate fuel tank readings.

Jun 23, 2009 | 2001 Ford Expedition

1 Answer

1992 Ford F250 - fuel injected motor - running too rich

you cant adjust fuel on the ford governor its can adjust fuel on cummins governor.have your governor injection timing check .make sure air filter not stopped up or will cause it to run rich.

May 16, 2009 | 1999 Oldsmobile Alero

1 Answer

Engine missfiring change #2 coil pack and sparkplugs

Might be the fuel Inj. or spark plug. I had the same prob on the #7. Changed Pack, inj, and plug and it fixed it.

Apr 29, 2009 | 1999 Ford Expedition

1 Answer

My 351 is running rich

use the air and gas flow adjustments on the side of the carburator to adjust the rich/lean flow of gas. there is a srew on each side of the carb to adjust one is for air the other for fuel. the one on the driversside is for the fuel and the one on the passenger side is for air. you have to turn them slowly til you get the desired results

Feb 17, 2009 | 1984 Ford F 250

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