'96 4Runner runs rough and rich OBD-II
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'96 4Runner runs rough and rich OBD-II
I need a little help tracking what exactly my problem is. The vehicle is a 1996 4Runner, 3.4, 5spd, 4x4. The 4runner was wrecked (right front damage) but still ran great, and while fixing it I decided to swap in the lower mile'd 5VZ-FE from my '99 donor 4Runner. I kept all elec off the 96 engine except the newer style MAF and air-box.
now it isn't running so great.
OBD-II codes:
100 (MAF circuit)
101 (MAF actual input different from actual)
110 (IAT sensor circuit)
1300 (Igniter circuit)
SYMPTOMS ARE:
Starts and dies
will start and high idle on second or third try
warms up and idles down to 750rpm (slightly rough sometimes)
throttling slowly it revs smoothe
hitting the throttle bogs down (and it stays bogged until I let off)
exhaust is strong smelling and leaves carbon mark on driveway under tailpipe
I can drive it if I'm easy on the throttle, but if I get into ANY hurry at all it's gut-less
WHAT I'VE DONE, OR KNOW SO FAR:
cleaned MAF w/ elec cleaner
cleaned throttle pos sensor (tried the spare)
cleaned throttle body (tried the spare)
checked for vacuum leaks
checked for any loose wires or bad grounds
Compression check (180+ on all 6cyl)
new NGK plugs
I'm wanting to say this is a wiring issue. Any ideas? Is there a possability of an issue in the fuse block? Maybe resetting the ECU? (I did try to clear the codes on the OBD-II)
thanks for any input
now it isn't running so great.
OBD-II codes:
100 (MAF circuit)
101 (MAF actual input different from actual)
110 (IAT sensor circuit)
1300 (Igniter circuit)
SYMPTOMS ARE:
Starts and dies
will start and high idle on second or third try
warms up and idles down to 750rpm (slightly rough sometimes)
throttling slowly it revs smoothe
hitting the throttle bogs down (and it stays bogged until I let off)
exhaust is strong smelling and leaves carbon mark on driveway under tailpipe
I can drive it if I'm easy on the throttle, but if I get into ANY hurry at all it's gut-less
WHAT I'VE DONE, OR KNOW SO FAR:
cleaned MAF w/ elec cleaner
cleaned throttle pos sensor (tried the spare)
cleaned throttle body (tried the spare)
checked for vacuum leaks
checked for any loose wires or bad grounds
Compression check (180+ on all 6cyl)
new NGK plugs
I'm wanting to say this is a wiring issue. Any ideas? Is there a possability of an issue in the fuse block? Maybe resetting the ECU? (I did try to clear the codes on the OBD-II)
thanks for any input
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MAF pinouts
that.... would be awesome.
I did try swapping back to the 96 intake tube and MAF to see how it would run. It ran better, but still not great (but none of the codes were reset at).
I'd still be using the old style MAF- but the 96 air box was crushed in the wreckage
thanks- I'll post outcome (might be this weekend)
I did try swapping back to the 96 intake tube and MAF to see how it would run. It ran better, but still not great (but none of the codes were reset at).
I'd still be using the old style MAF- but the 96 air box was crushed in the wreckage
thanks- I'll post outcome (might be this weekend)
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