Question about Cars & Trucks
Common problem with older Ford engines where the port that feeds the EGR valve gets clogged with carbon buildup. Most likely the EGR is located in the rear of the intake manifold with a vacuum line attached to it. If you remove the valve and find it blocked, you might be also looking at replacing the cat as well. Depends on how long its been bad.
Posted on Apr 18, 2014
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Posted on Jan 02, 2017
If EGR was out your engine light would stay on!usually hi way drive is a whole new emission game sensor work 100% different that city drive you have a O2 sensor problem don"t Get$$ the problem when if you say it only will do it on highway then take it on highway with OBD 2 in run scan mode have a passenger observe it this will give the the proper code you will need to peg it cheers!
Posted on Dec 27, 2008
Have you checked the fuel filter. Fuel pump will pressure up, but fuel filter could be clogged and not work without the pressure of the fuel pump.
Posted on Jan 17, 2009
Since all fuses are okay, I would start my trace from the fuse box and pick the easiest wire to trace which would probably be the lighter or aux. Check for any breaks in the line or any lose connections. It seems like a harness may be disconnected or cut.
Posted on Mar 23, 2009
You could have a restriction in the egr ports. remove the valve. Plug the holes, start engine. 1 hole will be blowing out exhaust, the other will have large vacuum.
Posted on Mar 28, 2009
what dtc do you have? is it p1401? if so the description is for insufficent air flow egr circuit. this is typicaly caused by a faulty DPFE sensor (delta pressure feedback emission) it is about the size of a buisness card and about 1/2" thick. its black and has a small wiring connector and 2 thick vaccum hoses hoing to it. Fords first step for repair for this DTC is to replace dpfe sensor and to assure hoses are not ruptured. i STRONGLY SUGGEST to use only factory sensors as it is often i replace new aftermarket ones that done work right from the start. this part is relatively inexpensive....good luck!
Posted on Jun 10, 2009
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