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TPS sensor on E46 no M

8K views 3 replies 3 participants last post by  geewrd 
#1 ·
Hello,

My 320I 2001 goes into limp mode after he gets hot. Only occurs when hot.
Did some research here and got faults codes checked P1639 & P1638 where logged. These are the throttle position sensors 1 & 2.

I used the search function but nothing came up solving my problem.

Can I replace the TPS sensors on a 320I?

Where are they located? (only found M version here)

Or should i replace the throttle body it self?

Thx!

for info:

P1638 Throttle Valve Position Control; Throttle Stuck Temporarily
P1639 Throttle Valve Position Control; Throttle Stuck Permanently
 
#2 · (Edited)
TPS is bolted to the Throttle body. Looks like it needs a good clean (note - don't use carb cleaner on your teflon coated TB). Dig out an ICV (Idle Control Valve) cleaning thread from Google or search here. Budget 1 or 1.5 hours to do the job.

Your TPS is fitted with dual redundant carbon wiper potentiometers to measure throttle position. These throw a different code when one is worn out.
 
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