yes, nature hate a vacuum(on earth) and for sure all mechanics hate finding them, some leave you missing all hair.
yes, 33f both read same parked over night, both ECT and IAT. near. 6000 ohms = 32f
they equalize parked while you sleep; and is a great test before starting any car. with eFI.
there is a huge vacuum leak inside the TB FOR SURE. why only takes blocking that huge hole, ahh, it stalls now and wont start, easy..... yes...
blocking that hole is the hard core proof this path leaks. very bad, so bad engine can run, and must not (IAC ,ISC AND BLEED CLOSED)
AIR LEAKS ONLY Cause tiny increase in mph, 800 normal , faster wastes most fuel but not by much.,
low mpg is other problems....
low mpg , sounds to me like ,
1: FUEL PRESSURE too HIGH (all reasons)?
2: STUCK IN LIMPHOME(FAILSAFE ORBACKUP) OR O2 SENSOR STUCK AT 0VOLTS
3: leaking injector, no its not you looked.
4: bad ECU,? say needs new caps, as all do, 1 time ! ID never run any ecu with Rubycon caps ever, i run nichicon. (real japan made top brand)
5: ON THE 8V IT HAS THE NASTY RARE FAILURE, IN THAT Only (caps key bad) in that, the one side of the dual driver is shorted.
the 2 injector wires are driven, and if one shorts, the fueling is all wrong. I find this easy by doing all 3 noid test in my injector page.
transverse test
and hot driver to ground
and battery to lamp and ground driver .
all must flash cranked, or that driver is bad, if any show the lamp stuck on, that driver is bad. both lines pulse, i have scope views on both.
just doing a text book transverse test, fools you in to thinking both work.
8v has tricky injection system. unlike 8v that is very traditional.
transverse test 1: (ascii art?)
injector pin1 >>>> noid>>>>> injector pin2
hot line red pin: >>>>>> noid>>>> engine ground.
gnd line yell pin >>>>>noid>>>> 5amp fuse >>>> battery +
noid is noid test lamp. I use a $1 lamp.
and for sure scope works far better.
scope 101: 8v injector, running engine.
not stuck low! if yes, the transistor is shorted. !
http://www.fixkick.com/INJECTORS/INJ-yel-to-gnd-w1.jpg
not stuck high or low. HOT side)
http://www.fixkick.com/INJECTORS/INJ-red-gnd-1w.jpg
good luck,!
yes, 33f both read same parked over night, both ECT and IAT. near. 6000 ohms = 32f
they equalize parked while you sleep; and is a great test before starting any car. with eFI.
there is a huge vacuum leak inside the TB FOR SURE. why only takes blocking that huge hole, ahh, it stalls now and wont start, easy..... yes...
blocking that hole is the hard core proof this path leaks. very bad, so bad engine can run, and must not (IAC ,ISC AND BLEED CLOSED)
AIR LEAKS ONLY Cause tiny increase in mph, 800 normal , faster wastes most fuel but not by much.,
low mpg is other problems....
low mpg , sounds to me like ,
1: FUEL PRESSURE too HIGH (all reasons)?
2: STUCK IN LIMPHOME(FAILSAFE ORBACKUP) OR O2 SENSOR STUCK AT 0VOLTS
3: leaking injector, no its not you looked.
4: bad ECU,? say needs new caps, as all do, 1 time ! ID never run any ecu with Rubycon caps ever, i run nichicon. (real japan made top brand)
5: ON THE 8V IT HAS THE NASTY RARE FAILURE, IN THAT Only (caps key bad) in that, the one side of the dual driver is shorted.
the 2 injector wires are driven, and if one shorts, the fueling is all wrong. I find this easy by doing all 3 noid test in my injector page.
transverse test
and hot driver to ground
and battery to lamp and ground driver .
all must flash cranked, or that driver is bad, if any show the lamp stuck on, that driver is bad. both lines pulse, i have scope views on both.
just doing a text book transverse test, fools you in to thinking both work.
8v has tricky injection system. unlike 8v that is very traditional.
transverse test 1: (ascii art?)
injector pin1 >>>> noid>>>>> injector pin2
hot line red pin: >>>>>> noid>>>> engine ground.
gnd line yell pin >>>>>noid>>>> 5amp fuse >>>> battery +
noid is noid test lamp. I use a $1 lamp.
and for sure scope works far better.
scope 101: 8v injector, running engine.
not stuck low! if yes, the transistor is shorted. !
http://www.fixkick.com/INJECTORS/INJ-yel-to-gnd-w1.jpg
not stuck high or low. HOT side)
http://www.fixkick.com/INJECTORS/INJ-red-gnd-1w.jpg
good luck,!
http://www.fixkick.com