Question about 2005 Ford Mustang GT
Emissions control light is on. Previous diagnosis indicated cam shaft position sensor, replaced cam shaft position sensor, cleared codes, light comes on again, the code reads cam shaft position again as well as engine running lean. Kwik Kar cleared those codes and recommended to switch to premium fuel and fuel injector cleaner additive in fuel. EC light comes on again. What in the world could be our problem? The engine idles rough when the car is sitting at a light or stopped in traffic. It feels like it misses when we are driving on the highway. What kind of trouble am I in and what possible solutions does anyone have to suggest?
SORRY, I ALWAYS JUST PUT BLACK ELECTRICAL TAPE OVER THEM...NO EMISSIONS WHERE I LIVE
Posted on Apr 08, 2017
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Posted on Jan 02, 2017
I recommend getting a repair manual from an auto store for your vehicle. They run $15 to $20. It will tell you exactly how to do everything you asked and also give you the values that should be expected. Hope this helps.
Posted on Feb 08, 2009
SOURCE: Emission light
map sensor. check your spark plugs, wires, etc. maybe a loose wire plug. did u mention check engine light, i wonder can you tell me what diagnostic code came up. go to ur nearest auto parts if u dont have a scanner. and pull them codes out.
Posted on Feb 25, 2009
I had a similar problem in a 1994 Taurus, and after spending nearly 300$ on ignition parts, it turns out the problem was a bad spark plug wire that cost me 8.88$ to replace.
Posted on Mar 01, 2010
Testimonial: "n.o. 1 spark plug wire it is. thank you"
the input to the sensor must also be checked. this link provides some diagnostic procedures. diagnosis for camshaft and crankshaft sensors are similar, as stated in the article.
Posted on Jun 10, 2010
SOURCE: I have a Ford Escort
The PO 304 ---is a misfire code for cyl #3, just a code
The PO 353 --- is a misfire code for cyl#3 that refers you
to PO 350 which is an undetermined Primary or Secondary
Malfunction You can not have 300 & 350 codes on the same vehicle
The PO171 -is a Lean O2 Code for Bank 1 most likely from
a misfire yet to be determined
The PO 1131 ---Lack of Switching ,lean trying to correct
for over rich condition
Personally I think anyone that uses 10 oz of anything,
in an 16 to 18 gallon fuel tank is wasting their money
There has never been any mfg recommend injector cleaner
In a ford they say not to use it,as it will damage the pintel coating,
which I doubt,still useless product
Did you clean the MAF Sensor
Continue to check for leaks,including
the EVAP System Hoses & Components
I would scope the O2 Sensors,you won't have
a scope & I don't care for a meter, as you don't
see the switching counts or time if they are old & slow
At 100,000 miles, change the ones closest to the engine
For a 40 mph issue under the slightest of vacuum load
check the Egr Valve,unplug hoses,plug them & road test
Do all your egr & coil testing on a hot day & up hills,
easy on the gas to load the engine some
The misfire codes you get on a ford are only correct about
2/3 of the time & you disregard almost all the misfire ones
You may have to walk 1 new coil until you get to the bad one
Your real issue is the idle problem
Check all vacuum items
Be nice if you could Smoke Test everything
& end that exercise
Check the cam timing before you spend days
going into the belt area
You could use a scanner to look at data,don't know if
you know anyone with one at work
Posted on Jun 17, 2011
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