About a month or so ago my engine light came on showing an egr code. I didnt worry too much about it and then one day last week it started idling rough and badly sputtering going down the road. I am wondering what the most common egr problem is in fords and if the egr is whats making for the rough idle?

to cut the long story short
take it to an accredited service center and have the fault codes read
Indicates a problem EVAP system not venting properly and causing pump and fuel pressure problems
If you take it to a mechanic and he doesn't run the fault codes with a scanner first , take it some where else

More than likely an issue clogging the EGR if it shows dirty again. Take your car to autozone or your favorite parts house and have them pull the codes out for you, most will do it for free. Once you have the code, it will point you in the right direction. Do you have any issues with driveability?

White smoke and foam in the gas tank indicates antifreeze leaking into the engine somewhere. Do you smell antifreeze? You may have an engine seal leaking, most likely head gasket. It may be affecting the various engine sensors.

Trouble Code: P0300

Multiple Cylinder Misfire Detected

Possible Causes:


Air leak in the intake manifold, or in the EGR or EVAP system.Base engine mechanical fault that affects two or more cylinders.Erratic or interrupted CKP or CMP Sensor signals.Fuel delivery component fault that affects two or more cylinders. (i.e., a contaminated, dirty or sticking fuel injector).Ignition system problem (coil or plug) in two or more cylinders.Vehicle driven with low fuel pressure or while very low on fuel.

on dodge motors
fitted a lot of parts and still no better

the fault code clears and comes back as a intermittent problem

could be electrical voltage drop off or heat related failure

i wonder if your 02 sensor ,the catalytic converter
or other related sensors
are causing the fault to come back
if needed .....fit a new air filter...

how the test is determined

P1294-TARGET IDLE NOT REACHED 3.3L/3.8L
When Monitored and Set Condition:
P1294-TARGET IDLE NOT REACHED 3.3L/3.8L
When Monitored: With the engine idling and the transmission in drive, if automatic.
There must not be a MAP sensor trouble code or a Throttle Position Sensor trouble code.
Set Condition: The engine idle is not within 200 rpm above or 100 rpm below the target
idle for 40 seconds. One trip fault.

POSSIBLE CAUSES
INTERMITTENT CONDITION
IAC MOTOR PASSAGES
VACUUM LEAKS
AIR INDUCTION SYSTEM
THROTTLE BODY AND THROTTLE LINKAGE
TEST ACTION APPLICABILITY

problems are consistent with an egr problem before replacing try to clean carbon and free valve --remove egr and with a carb or brake cleaner clean the carbon the most common problem is carbon build up causing the valve to malfunction continue to drive can cause a full break down with the vehicle not starting or stalling while driving

There are several codes that can be set by the EGR system. EGR valve failures on Fords are very rare. There is usually something wrong with the EGR Control Solenoid, The EGR ports clogged up, The DPFE sensor (the sensor that monitors the EGR system) or the vacuum lines between the intake manifold and the control solenoid or between the solenoid and the valve.

Fault codes NEVER tell you what parts to replace. They only tell you which engine management system is failing to function properly. Anytime there is a fault code the system has to be diagnosed to find out what is causing it to not operate like it should. You can spend a lot of money on parts and not fix your EGR system if proper diagnosis is not performed.

If the gasket for the EGR valve is leaking it will cause your engine to idle very high and will cause the computer to set "lean O2 sensor" codes. If this is not occuring, it is safe to assume that the EGR gasket is not a problem.

There are many things that can cause your engine to die at a stop light. Everything from a loose battery terminal to a failed computer module to a bad ignition switch, to a malfunctioning Idle Air Control (IAC) valve or an intermittent problem with a Crankshaft Position Sensor. I would recommend having it checked out by a professional if it continues to be a problem.

did you replace the egr valve

could be the type of plug you are using.I was told only to use ngk plugs.I recently put bosch plugs in my mazda 3 and the check engine light came on and it started missfiring.

try the egr valve