P0121 and no OD, could use help here.
Thread Starter
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Legend
Joined: Jul 2007
Posts: 7,843
Likes: 13
From: DFW, Texas
P0121 and no OD, could use help here.
So I was driving ot the grocery store and there's a strech of road thats 55mph. I get up to 55 and notice the truck's louder than normal. look at the cluster and there's a CEL and the RPM's are way up in third gear like it hasn't grabbed overdrive.
Checked the code when I got home and its P0121.
What is that? The old OBD code site doesn't list any P codes anymore as they are Copyrighted.
Checked the code when I got home and its P0121.
What is that? The old OBD code site doesn't list any P codes anymore as they are Copyrighted.
Thread Starter
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Legend
Joined: Jul 2007
Posts: 7,843
Likes: 13
From: DFW, Texas
RE: P0121 and no OD, could use help here.
Thanks PA,
A new, unmodded TPS fixed everything, even the rough idle. I'll let it sit overnight and check it cold to verify.
Kind of funny, the one mod WayneC has done, I don't want any part of.
Maybe I should change my Sig to "Goin' back to Stock"
A new, unmodded TPS fixed everything, even the rough idle. I'll let it sit overnight and check it cold to verify.
Kind of funny, the one mod WayneC has done, I don't want any part of.
Maybe I should change my Sig to "Goin' back to Stock"