Question about 2003 Toyota Tundra

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1,3,5,7 cylinder miss fire - 2003 Toyota Tundra

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Bank1 failure.

my guess, those DTCs off a cheap scan tool>? why not post source and real codes, no lie P0301 is real. but off what?

real engine: Name.

4.7 L 2UZ-FE V8

VVT-i variant??? got VVT? IF ONE SIDE FAILS, misfire there. if cam retarded. if bad, can be 14deg retarded, (huge)

see cam action here.

http://www.mr2.com/files/mr2/techinfo/Random%20FSM%20Data/2uz-History.pdf





2003 Tundra.

if using a full real scan tool that sees all toyota extended DTCs , you might see VVT errors, $20 tools and lame autozoned , blind .

there are 4 sensors there, id bet there are codes you missed!



P0301,3,5, and 7, DTC, ONLY?

bad coil packs? no.



thats the whole left bank, bad.

RF 2-4-6-8

LF 1-3-5-7

so, VVT bad on left bank or coil pack ,

yours has 8 COP coils, so its not 4 bad COPS.

a real mech sees all this in 1 second , online, impossible

nor country. sold.\'



could the timing belt slip only on one side

did you do timing belt service, on time, if not, bingo.



misfire is

bad compression (vvt?)

bad spark , no, not all 4

bad fueling, but there is only 1 maf/map, and one full injection rate there so not fuel mix.related.



here is a tool (most AZ stores clueless)

that reads the enhanced DTC of Toyotas



http://www.amazon.com/gp/product/B001QIUGVI/ref=oh_details_o01_s00_i00?ie=UTF8&psc=1#productDetails



using a 1996 tool , misses the boat.

but id bet your VVT is bad. left bank.

the real tool might help. here.

P1349

P0011 Diagnostic Trouble Code Discussion for
Camshaft 1 Position Sensor Target Performance
P0012 << or this>? P0020/21/22?



the FSM shows the manual tests for these VVT parts.

Posted on Feb 21, 2014

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