If you meant p0734 instead of p0743then dont worry about the Torque converter since that was what it was referring to.

p0734- Gear 4 incorrect ratio

I have no clue what to do about that one. Maybe it is just getting thrown because of something else and really has nothing to do with anything.

 

both banks lean take a look at the air filter

 

p0734 transmission speed sensor could be a cause, should have an input speed sensor and and output speed sensor

 

A dirty airfilter will cause it to run rich, not lean.

 

oops right on i always think of that the wrong way

 

Great info guys! Keep it commin'!

 

is there any way for you to get the fuel pressure checked.

 

lean codes + 4th gear codes = bad MAF. bring one with you when you pick it up. A K&N air filter will make them go bad, so if it has one, throw it away and get a paper one. www.lrrforums.com has a store and good prices on a new MAF. Tony ships pretty fast too...

 

If it needs a new MAF you are looking at about $300 and you can replace it yourself.
So get a quote from a repair shop for a new MAF and take that to the dealer and have them deduct it from the purchase price.
Then order it from www.atlanticbritish.com and replace it yourself.

 

He is looking at $160 and it is so easy to replace it is a joke.