Been having an issue with a rough idle sinc ei got the car on the road again two weeks ago. This idle issue is also joined by 22-24 MPG highway mileage, if that matters.
After days of searching and testing here is what i've done so far:
1) replaced IAC with one i know was good of my SE(RIP)
2) checked for vac leak....did not find one (my personal culprit for my issues, any know area to check for leak?)
3) replaced EVR with a new one recently installed on my SE
4) has new revised DPFE sensor
5) ran a bottle of injector cleaner through it, no help
6) removed and cleaned MAF wires
7) reset the PCM
8) full UIM\LIM rebuild
9) installed a TPS i know is good
10) ford racing wires with new autolite double plats propperly gapped
I was getting 30 MPG out of my SE w\o the headers.....
I'm not throwing any codes.
FWIW, i'm running stock exhaust off a set of MSDS headers with opt y and MIL eliminators, ru3530.
I'm at my wits end guys, please help.
