I've had my 2002 ford f-150 checked for the check engine light and was told the emissions were too lean or something like that. I replaced the sensor withthe 2 tubes coming from the exhaust tube. It worked fine for about 2 days and the light came back on. I was told to replace the EGR valve and by the next day the light came on. It runs a little rough but sure does burn that 2.50 a gallon gas. Anyone got any ideas on what I can check next? thanks

 

The passages in the manifold may be cloaked with carbon.[hr]I would remove the EGR a spray gumout in the passages.[hr]Now start the truck with the egr off and spray more in the passages.[hr]It may run a little rough but this is the only way to fix this.[hr]Reassemble the egr and clear the code by removing the battery terminal for a few minutes.[hr]This is a common problem that can easaly fixed.[hr]The last 2 ford egr problems I had were fixed using this method.

 

Thanks alot for the good advice. I will try it after work tomorrow. This is why i've been trying to login into this website. you guys seem to have great advice all the time. Can't beat the price for it either. Thanks again

 

I tried this on my truck and the light was off for a few days. Now it's back on, Got any other suggestions? I wanted to ask if anybody knows whether there is a part which controls the vacuum line to the EGR valve. If so how can I check this part or the vacuum line going to the EGR.

 

if the motor is a 4.6 egr ports clogged in throttle body eblow

 

It's called the Exhaust Gas Vacuum Regulator. It's a solenoid that the PCM commands. When the PCM tells the solenoid to active the EGR the solenoid passes a vacuum to the EGR which in turn moves a diaphram in the EGR that allows the soot that should go out your exhaust to clog your entire intake system with carbon thanks to the EPA.