99ZEOD

iTrader: (5)

It only does it when I've been driving for about 200 miles on the highway and fill up with gas. Then after a few miles back on the road the SES light comes on. Auto tap says it's throttle position sensor performance. I have switched out throttle position sensors twice now so I know the sensor is good. Again, it only does this when I'm on the highway after a fill up. It does not do it after around town driving. I'm lost on this one, I've searched and called numerous places and keep coming up empty. Any help would be greatly appreciated.

99ZEOD

iTrader: (5)

Any ideas?

99ZEOD

iTrader: (5)

I know there is someone out there with the same problem. Please help, this is really bugging the **** out of me.

2xLS1

iTrader: (25)

Hard to help without knowing the actual # of the code it is setting.

99ZEOD

iTrader: (5)

Yeah, I guess that would help wouldn't it. It's setting a P0121.

2xLS1

iTrader: (25)

You need your P0121 error min and max MAP values raised in your tune from 55 and 65 to 75 and 85.

99ZEOD

iTrader: (5)

I appreciate the heads up on that but is there any reason that it would just start doing it. I've had all the mods in my sig for quite a while. Seems like it would've started right after one key mod that it didn't like. Can you shed some light on this for me. Thanks for the help.