Quick question. I switched the throttle body of my auto, 4 speed because it wouldn't idle, with a throttle body of a 5 speed manual. Should this matter? Are the throttle body identical? The car now idles fines after the swap however.

Note: we never ran the car with the old throttle body, but when we ran it with the new one. It was in limp mode with a 2k rev limit, 40mph. Is this related or a different problem?

 

They are physically the same. Did you reset the KAM and the NVRAM when you switched them? It's probably misreading the sensor in a bad way. Doing both resets might fix it, if it doesn't then there is an unrelated problem.

 

Yes I did, thank you!!!