resurrection!
hey folks, so i have the same problem as last time. my videos up there, sparky coil, etc, occur again.
ive had 3 caps, 3 rotors, new plugs, wires, and 4 coils on the astro.
best that i could figure, is that the block has a bad ground?
getting my stupid q's out of the way...
-engine block ground, does it ground thru the engine mounts?
where is the OEM ground? i couldnt find anything near to this, i didnt get under the vehicle though.
i replaced the last coils on warranty. (yay keeping reciepts) the plugs (it was due) and the wires (was also due) where prevnt maint.
but the caps, rotor (yes yes, acdelco only), i tried 2 aftermarkets, and then paid in full for the OEM (thats currently on the 'stro now).
so, the coil bots to the intake, on an alum surface. does this ground to the motor? or in the plastic intake, its set and not grounded.
either way, it was my process of elimination that the engine had bad/missing ground from the block to the body, etc.
fig'd that if the block isnt grounded properly, the spark from the coil, thru the wire, to the plug isnt grounding to the electrode on the plug, and causing resistance when its trying to fire. (concur or flame me for being wrong? lol)
when i replaced the coil up at my 'rents house (178 miles from home) when the van wouldnt start for me, this time i added a 10ga grounding wire from the back passenger head a major body ground (both cleaned, prepped, etc) and the van seemed to be 'more happy' and run 'stronger' than it has in the past 2 years. engine had more power, w/ a load (400+lbs of stuff) and a full tank, + runing the a/c. that and i observed crazy +++ in MPG from rents to home.
i observed 13 gal to get 178 miles, then 7 gal to return home, both w/ a/c and the return trip +400lb in weight added.
thoughts?