no sure all that. but
evidence, SO FAR:
backfires to TB (back fires to induction path)
never good that.
and serious.
engine misfires badly.
owner simulates air cleaner clogged and it runs better.
the fist test, ouch.
RPM MAX 2000<<< limp home mode or just gross misfire.
19 YEAR OLD CAR NO SERVICE HISTORY POSTED
CAM CHAIN SCREAMING FOR HELP?????????<<NOISE MAX?
19 year parts that fail are
- maf dirty needs cleaning,never brush any hot wire MAF ever.
- spark parts bad plugs and the wire sets. if not replaced 1 by one on that huge coil pack it will back wire for sure. oops. wasted spark rules can not be ignored !
- bad thermostat overheated engine and valves burned./
- fan belt bad or slips and waterpump fails. and overheats again
some DTC can not set and be seen unless you drive the car
say 2000 rpmmax(LOL) around the block fully hot engine 180f to 200F temp, hot engine means normal hot engine, is it does it?
and 19year old thermostats are
NO GOOD. stuck open oops or the silly fail safe STAT stuck open and 150f is max.
and stuck on cold start mode for ever and fouls spark plugs and misfires endlessly.
I'd do a full engine compression test any 19yo car.
gee it's old, 150psi and more and near equal x4
no miles told on car 200k miles 250k?
seems too that engine ran worse before and was ignored
and the CAT is melted, and 80% melted and engine can not pump air, as it should.
we see that effect easy with a vacuum tool; gauge
if vacuum is wrong, 20"hG steady or as you gun the throttle.
vacuum works backwards with cat clogged.
means partially clogged. if fully clogged engine is DEAD fully.
this is just some tests.
not a full set of tests ever, do I post, I could but refuse.
NOW IF YOU OR OTHER PLAYED WITH 4 WAY COIL PACK
HERE IS THE CURE.
MUST BE WIRED THIS WAY ONLY.
firing order is , 1,2,4,2 wasted spark. tech.
block F1,2,3,4R
front is at engine belt end.
if wired wrong it will backfire horrid. grossly.
1 and 4 fire same time
2 and 3 same. time.
only 2 coils inside to run 4. magic.
