Ok so on my termi fox I had it tuned and the alternator went out during the tune! But tuner told me car was good to go! So I get home and fix that! Now that it is running good, at wide open throttle gear changes it stumbles for a second then starts pulling again! Its in 2nd and 3rd soon as i shift! what should I check? Also I shortened my throttle cable so TB will open completely, is this my prob?
Small Problem
- Thread starter calypso92coupe
- Start date
everything has 40k miles. and long as i roll into throttle it dont do this!
It should not have been tuned with the alternator failing, as voltage plays a big role in getting the fuel into the cylinders. Reduced voltage effects everything from fuel pump output to the response time of the injectors, which is why there are dedicated tables in the tune file just to correct pulsewidth for varying voltages. Your tune file will likely need to be corrected.
it didnt fail until the last pull, right at the end of it. He said it was good to go when I get it changed. it just seems to stumble a little bit at wot, soon as i change gears. I was just wondering if there was anything I could check before going back to the tuning shop 2 hours away? Think a new fuel filter at 40k miles? I am going to change it this next weekend. Its fine if you roll into wot just not standing on it.
It won't hurt to replace the fuel filter, but I sincerely doubt it will cure the problem. Are you able to datalog, including WBO2 data?
It died the last pull but was probably weak on the other pulls so tune could still be off
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