2003 Ranger problem :(

[Crosshair]

Hey, I have a 2003 Ford Ranger FX4 lvl2 4L V6...anyhooter I gave it a tune up a little while ago (oil change new plugs, new PCV) and the check engine light popped on. It wasn't too bad until about a week ago, it started running extremely poorly in the lower RPM's 1-2000. And when I had the engine light checked the code it gave me was that my gas cap was loose It obviously wasn't my gas cap (even though I did decide to replace it and see if that changed anything :P) Anyway it still runs like crap and doesn't idle after I drive it for more than 10 minutes. Any suggestions? And if it's a quick fix or should I consider saving myself the time and effort and take it in? Thanks.

[robbie jay]

I would go back and make sure you dident knock any vacume lines loose or you dident break any of the plastic lines I would also take a look at the EGR valve.Also clear the code and when it pops back up re-scan the computer.

[ABE]

Originally Posted by robbie jay

I would go back and make sure you dident knock any vacume lines loose or you dident break any of the plastic lines I would also take a look at the EGR valve.Also clear the code and when it pops back up re-scan the computer.

X2 and try detaching the electrical connection from the EGR vacuum solenoid. The EGR should be closed but a faulty solenoid may be applying vacuum and opening the EGR which would affect idle and low speed operation and cruise.