Engine miss

[1mustangnut]

I have a 94 Explorer which has 140,000+ miles, which has been plagued by a persistant miss. The following parts have been replaced fuel pump, fuel pressure regulator, plugs, wires, egr valve, module on egr valve, 0xygen sensors, and head gaskets. I've tried cleaning the Mass Air sensor, upper intake, throttle body, and used several bottles of fuel injector cleaner. The code I keep getting is for low EGR flow. The light stays off at idle but once the engine is accelerated it comes on. I'm out of ideas and the Ford garage is not fixing the probem. Any one have suggetions???

 

[GenLee01]

5.0L v8 conversion! really i have no idea. good luck though.

 

[BradE.]

maybe the DPFE sensor?

 

[1mustangnut]

I replaced the DPFE sensor as well. I haven't did a compression check but all the vaccum lines seem fine. A 5.0 replacement would be nice if I could get the transfer case to work with an AOD trannny.

 

[ALYZ1FLR]

Dont laugh!

If you follow most of the trouble shooting guides, they will conclude if all sensors check good and harness checks good. You should suspect the control modual itself. It sounds like that is all thats left. Try swapping with some one and see if it goes away. I hate stumpers. Good luck.

 

[1mustangnut]

I removed my home made elbow and open element air filter. The X now runs like a new one with the panel K&N and factory air box.

 

[InkWax]

So the whole time it was the homemade airfilter setup?

 

[1mustangnut]

I never did track down the problem but after re-installing the factory air box with panel K&N filter, the miss went away. However, the problem got a total fix by trading for a 5.0 Mountaineer. I've been all ever since.