911 PLEASE HELP 92 ford explorer load miss

[caseysexplorer]

Ok this is kinda long but I am out of ideas. Went to holy cross trail on the trail it pick up a miss but only under load so when we got back to camp we went to leadville's part store got plugs wires fuel filter and t state and temp sensor because the gauge was doing wierd things. After installing of parts still had a load miss right at 1600 rpm. So when i got it back to the garage I check codes and got a mass air code swap out the mass air,fixed the code but still missed. So I swap out the coil pack for a used one I had still missed check compresstion 130 warm or cold and vac gauge was perfect. I checked fuel presssure and its 38 psi and hold just like it should. So i then put in a o2 sensor and yep still missing under load SO I give up any ideas????????????

 

[marragtop]

Check for vacuum leaks, especially at the vacuum tree (drivers side by firewall).

 

[v1rotv2]

That's what I was thinking.

Check for vacuum leaks, especially at the vacuum tree (drivers side by firewall).

Along with checking vac pressure did you visually check the lines for cracks. This sounds just like a vac leak.

 

[caseysexplorer]

well I fixed it this weekend. I kinda started over I ran omhs on all the plug wires after checking everything again. I had a two bad wires in a brand new set of wire. so replaced the wires with another new set and what do you know it runs great know. Thanks the help

 

[mikeinri]

I was thinking wires, but you replaced them, so I thought it had to be something else. I HATE when new parts are bad...

What brand of wires did you use?

Mike

 

[caseysexplorer]

I used napa mid grade wires and went back with the same. Were I live we have only to part stares napa and checker. Checker here suxs. But thanks for all the help