Just had the trans replaced, had a bunch of codes I cleared.

Getting 9.6 mpg city.

Anything I can do to reset or increase the mileage?

Not sure why its so bad.

Did a TB clean.

thanks

 

I don't like to sound like a pundit but make sure everything is tight fit . I got a poor fuel consumption in my dad's car and that turned out to be a loose hose and broken PCV Hose

 

Check the O2 sensors are connected correctly - the centre plastic cover under the bonnet needs taking off, and look down behind the engine where it joins the gearbox, the O2 sensors connect up on a bracket there. If they're not connected it would throw a code though?
Would have been nice to see what codes you cleared! have they come back and can you post them? It would help, greatly.

 

These are the codes I cleared:
1. P 1722
2. P 1316
3. P 1000
4. P 0732
5. P 0175
6. P 0171
7. P 0308
8. P 0307
9. P 0300

They have not come back, I switched 2 O2 sensors, and yesterday did a hard reset.

I believe the 2 trans codes were from the old trans.

 

So how is the gas mileage now ant? was the advice useful, a rather short info'less statement from you?
Followups are valuable in fixing faults, it's not just for your car!

 

Infoless??? Not sure what you're talking about.

Mileage went up.

 

How did you do the hard reset and did you clean your MAF?

 

And what is the specific mileage?

When you asked the question it was 9.6mpg city.

What is it postfix?

 

Mileage went to 13.7, but I still want to measure the old way at next fill up.

 

Yes, cleaned the MAF, held the negative cable to the Pos. terminal 10 sec.

 

Mileage back down to 10mpg around town.

Not sure why its so low.

?

 

i just recently went through exactly what yo are talking about. the independent jag specialist who did the trans used his equipment to clear all th prior trans codes. the 0131 i took care of by replacing the pass side upstream 02 sensor , the 0171/0175 i took care of by cleaning the mass airflow sensor / intake piping and t-body. the p1000 cleared when i did the hard reset. for good measure i also disconnected the pos and neg batt cables and let it sit for about 20 min. so far nothing has returned. dont know if it was related , but i replaced any vacuum hose i could find with silicone hose. the ones around the t-body were very brittle and deteriorated.

 

What did you get the mileage up to?