i have an o2 screw with 150000 on it it started missin a couple weeks ago under load i thought it was cop, so today i change the all cop and installed motorcraft plugs gap at .054, and swaped to sniper coils, now its running rougher than before and its kind making a popping sound through the intake. checked pcv line and theres no cracks on it but the pcv is making alot of noise. and another thing the ac isnt working now like the compresor isnt kicking on, and its always worked perfectly fine, it changes perfectly fine from vent to floor to defrost so im pretty sure its got vacume.

 

just a shot in the dark try cleaning your MAF sensor on your intake with electric cleaner

 

ill try it tomorrow, ive got work tonight, what gets me is its running worse than before, if all else fails i guess ill redo the tune up tomorrow morning and put the stock coils back in

 

are the sniper coils any good? i dont read much about them. the coils to get are the ones from global automotive and uneek supply on ebay. you can get all 8 for 80 bucks off ebay. just type dg508 into the search bar. does it misfire at idle? if so just unplug each coil until you find one that doesnt affect how it runs and swap that one with a known good one.

 

Did you use dielectric grease inside the COP boots, taking care not to get any on the spring?

 

the sniper coils are a true coil on plug, pencil coil, no boot or spring, ive heard alot of the lightning guys and mustang guys running them with good luck, im gonna try unpluging them one at a time to see if i can pin point the cylinder or cylinders that arent firing

 

I haven't heard of any lightning guys running them, they sound like throttle body spacers and snake oil

all the fast Lightnings use the stock cops or the BS3 with the LS coils

 

i still cant get this thing to throw a code, its driving me nuts!! if i take my old coil packs to a dealer can they test them, id hate to have to throw them back on after spending 400 dollars on new coil packs.

 

finally got code p0354 gonna check into that, but still cant figure out why the ac would stop working

 

use global or motorcraft cops only, lots of dialectric grease (none on the springs)


your code is a P0354 Ignition Coil Primary D / Secondary Circuit Malfunction


check your wires going to the COPS and see if any are damaged, there's a chance a couple wires got messed up and causing your heart ache

 

What the hell is a Sniper coil? The stock ignition can damn near ignite water, I'd take that Sniper junk back and put the Ford coils back on it.

 

i found out what was causing the miss in cylinder 4, i guess being tired when i put the connector on that coil the the male contacts on the coil got messed up it definantly wasnt fireing so i put new plug in and swad that coil with one of the ones in front just to see if i can get the miss to move to that cylinder, but im pretty sure i got the miss out, but now bigger problems, while on the way to autozone cylinder three blew the plug out, ive had problems with it before. i have a plug chase and it threads in with ease but when i go to put the plug in it wont start on the threads. guess i need to start looking at time serts

 

We have a member here that rents out a Timesert kit. His name is Galaxy.