The error code 1131 means the air/fuel mixture is too lean
on Bank-1 while 1151 indicated mixture is lean on Bank-2. You can check for the
causes of the problem in following link for both error codes (1131 as well as
1151):
http://www.obd-codes.com/trouble_codes/ford/p1151.php
SOURCE: 1998 FORD EXPLORER 4X2 SPORT 4.0 OHV
Both appear to be a lean mixture problem according to my research. Have you run some injector cleaner through it by any chance? What about coolant level, is it staying up, pressure tested, just in case coolant is mixing with fuel via, head or intake gasket leak, and leaning out the mixture. Low fuel pressure will cause lean mixture in some cases, test it or at least change filter if not done recently, or both. Hope that helps.
SOURCE: 2002 Hyundai Sonata wont pass smog
CA you can take the car to a referree and get a one time waiver if you have spent a minimum of $450 on repairs not including smog fees. Gives you two years to get it fixed.
Smog Referee Call Center
Toll Free: 1.800.622.7733
You can also sell the car to the state for "up to" $1,000
SOURCE: I have a 1997 Ford Explorer. Check engine light
Here is a list of possible causes, hope this helps.
Your vehicle’s computer system has self-testing capability. When the computer senses that there is a problem with one of the components or sensors it stores the correspondent trouble code(s) in its memory and lights up the "Check Engine" or "Service Engine Soon" light to tell you that there is a problem and you need to diagnosed and repaired it. The list of possible codes number in the hundreds. The code itself doesn't tell exactly what component is defective - it only indicates where to look, or what engine parameter is out of normal range. You or a technician will have to perform further testing to pinpoint cause and the proper repair. Even if you reset the light, if the underlying problem is not addressed it will come back on.
Possible Causes
Setting Conditions
SOURCE: firing order
that is true your firing order is wrong here is a link to a web sight that has all the 1998 explorers 6cyl just click on the one that your explorer is and it'll show you the correct firing order also make sure you have your plugs gaped right good luck.
http://autorepair.about.com/library/firing_orders/bl-ford-firing-98.htm
SOURCE: 2001 ford explorer sport, door keypad reset
How to find the Security Keyless Keypad Code on the 1995-2001 Ford
Explorer or Mountaineer and how to use the Keypad functions. The factory
code is also printed on a label which is installed on the Remote
Anti-theft Personality (RAP) Module. This is the module that controls
the keyless entry system. It is
located in the left rear quarter behind the removable panel (see photo).
You will need to turn the two thumb screws counter clockwise and take
the plastic panel off to be able to see the unit. A flashlight may be
helpful in seeing the code. You are looking for the module and the 5
digit code on it like the one shown below.
Now that you’ve got the code I’ll tell you how to use the Keyless entry
and set-up your own code.Make sure when pressing the controls on the keyless entry keypad you press the
middle of the buttons to ensure good contact with the controls.
Check this for Programing the Keypad.
Hope this help (remember rated this comment).
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