CobraConti
Well-Known LVC Member
MKVIIRIP said:ok so i bought my 95 Mark VIII LSC on 4-21-05 exactly one month after some :q:q:q:q:q:q:q t-boned my 86 Mark VII LSC
anyhow it had 151k on it when i got it.
the front end had been slightly wrecked but poorly reassembled. loser couldnt take care of his mark. but to the point...
sometime after i got it i changed the plugs to the motorcraft plugs.
probably about this(2006) March at the beginning it started stumbling and shuddering and crap like that.
so my first reaction was the transmission.
i went and had it flushed(no solvent) and they put a new filter in and Dextron III/mercon fluid in it...problem didnt go away... no luck.
I then bought a rebuilt Dacco torque converter (cause i couldnt afford an art carr/precision/or edge) but that still didnt solve the problem. i was told to add LubeGuard to it...i did that (that adds friction modifiers, basically makes it equivalent to mercon V) problem still persisted. i then added a tube of Dr.Tranny's shudder fix.
oh and i also have had this shearing sound when the transmission is in park and neutral the whole time ive had the car so i know its not the TC bolts cuz i did those myself and it hasnt gone away.
next i changed the fuel filter.- no luck
i checked the fuel pressure at idle- it was 20 psi at the rail.
the vac was -12psi then i fixed a vac leak...it went up to -15psi steady at idle
the beginning of may 06 i changed to a 255lph BBK/walbro fuel pump...problem still persists.
i pulled air tube and TB and my IAC (to the left of TB) looked pretty clean...(its resistance was 12.7ohms) as were my injectors if i remember correctly.
but the EGR side of the TB (right of it) was pretty clogged, problem though is that i couldnt get the EGR off yet. so i used a screw and unclogged it with small amounts of carb choke cleaner. after this my vacuum went up to -20psi at idle. i need to take it and clean/check it still.
i just ordered a set of MSD Superconductor wires....
----I NEED A ROUTING DIAGRAM PLEASE (pyro69_2001@yahoo.com)---- because i hear from my friend with a 97 cobra that these engines are reallly picky about how you run your plug wires. so help ASAP would be awesome.
the only other things i havent checked were the backpressure and O2 sensors and coil packs (that i can think of)
i wasnt able to get ahold of the ford scan tool (only the snap-on) which read an EGR code and also High exhaust pressure...
it now has 170k miles
HELP
at 170K those orginal O2's and coils probably aren't doing their job. They are WAY past due to change. Changing those parts will do u good even if it's not the overall problem.