Question about 2004 Ford Mustang
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
SOURCE: Service engine soon light on
Hi, 1151 is an 02 sensor code, 1131 is also 02 sensor code,
0174 lean condition bank 2, and 0171 is lean bank 1. Either this is in need of a whosale of repairs or you have computer issues, From looking at the codes i would first do a complete tune up, Including wires, And inspect for a vacume leak before replacing any 02 sensors..
Posted on Aug 07, 2010
po301 thru po306 all misfire codes cylinder 1-6 remove plugs and replace them..... set the plug gap first
i suggest u replace the wires also if they never been replaced all these misfire codes can set the others and one is for the oxygen sensor ( 02s or HO2S) CIRCUT MALFUNCTION do u know how to check wireing systems
do the tune up plugs (set gap) .052-.056 change the fuel filter also. clear the codes hows it run
this info is for 98 E-250 4.2Litre
what engine do u have 4.2L or 4.6L i know it is a v-6 by the codes
Posted on Dec 15, 2008
It is not recomended to disconnect the battery and turn the light switch or horn or anything else on in order to clear codes stored in memory because any settings stored in the computer may be lost too.Go to autozone and rent the scanner to do it yourself.It is very easy,just connect the scanner to the connector located below the dashboard, turn the ignition on but not the engine and follow the prompts then when it says: clear codes?hit yes or enter and that is it.This is the safest way to do it.
Posted on May 26, 2009
just went through this myself. first be sure there are no leaks incap as suggested. second, since computer system pressurizes fuel system as part of emissions, any possible leak, like in filler neck to tank, will trip the check engine. that fixed it for me - last summer. now, new problem showed up again. this time 2 different trouble codes: EGR valve and a pressure sensor. fixed the problem. a week ago, light back on. this time a no $ fix-loose vacumn hose. best advice like the other guys said is to get it scanned and start there.
Posted on Oct 27, 2009
P0171------ system too lean bank#1
Po174------ system too lean bank#2
For these 2 codes, try cleaning the maf sensor (mass air flow), that is mounted in the big black hose that goes from the air filter housing to the throttle plate, if it is dirty, that will cause those 02 sensors to send a signal to the computor to lean the air fuel mixture. If cleaning it doesn't work, the sensors will probably need changing.
P0300---- Random/multiple cylinder misfire
P0316---- Cylinder misfire at start up---- first 100 revolutions.
On those 2 codes, you have to do some testing to find out why there is a misfire.
weak coil pack
fowling spark plugs/wires
Low fuel pressure
Posted on May 12, 2010
Tips for a great answer:
Jul 05, 2015 | 2007 Ford Freestar Limited Minivan
Oct 24, 2017 | 1998 Ford Mustang
PLEASE RATE THIS REPLY FOR ACCURACY
Mar 24, 2013 | 2004 Ford Mustang
Feb 16, 2012 | 2002 Ford F150 Regular Cab
Jan 17, 2012 | Cars & Trucks
Jun 26, 2011 | 2004 Ford Mustang
May 19, 2011 | 1994 Ford Mustang
2004 Marauder and 2003-2004 Mustang vehicles built before 12/19/2004 equipped with 4.6L 4V/5.4 4V engine may exhibit a runs rough, lacks power, and engine misfire, prompted by a MIL light and DTC codes P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308, and P0316.
Diagnose engine for engine misfire concern. If diagnostics determine an engine misfire which is characterized by leakage through exhaust valve(s), only replace the affected cylinder head(s).
SERVICE PROCEDURE FOR VEHICLES WITH RUNS ROUGH/MISFIRE CONDITION:
1. Perform relative compression check on all cylinders. If abnormal, check cylinder leakage and actual compression for "low" cylinders refer to Workshop Manual (WSM), Section 303-00.
2. If leakage/compression check indicates a valve train concern, per valve train diagnostics in WSM, Section 303-00, replace cylinder head and cam assembly, pipe plugs and timing chain tensioner, per procedure outlined in WSM, Section 303-01.
3. If cylinder leakage and compression tests are inconclusive, perform misfire diagnostic, per TSB 05-22-8.
Feb 26, 2011 | 2004 Ford Freestar
Jun 15, 2010 | 2004 Ford Mustang
Feb 16, 2015 | 2004 Ford Mustang
279 people viewed this question
Usually answered in minutes!