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DIY: Do It Yourself
Post here to share or improve your wrench turning skills! All BMW E46 DIY tips, tales, and projects discussed inside. Learn to work on your car and know the right BMW parts you will need!

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Old 01-12-2011, 03:34 PM   #1
Egbert87
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Join Date: Dec 2010
Location: Netherlands
Posts: 4
My Ride: BMW e46 320i
TPS sensor on E46 no M

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
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Old 01-12-2011, 03:58 PM   #2
Arty
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Join Date: Oct 2009
Location: UK
Posts: 1,029
My Ride: 1999 328i
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.

Last edited by Arty; 01-12-2011 at 04:03 PM.
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Old 01-13-2011, 10:06 AM   #3
Egbert87
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Join Date: Dec 2010
Location: Netherlands
Posts: 4
My Ride: BMW e46 320i
Oke thanks Ill try that.

I replaced the rubber tube to the Valve because it was cracked sucking false air in, cleaned the icv better did the throttle valve also while i was at it . Ill keep you updated!
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Old 06-07-2012, 06:36 PM   #4
geewrd
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Join Date: May 2012
Location: Canton Ohio
Posts: 14
My Ride: 2002 325i
Quote:
Originally Posted by Egbert87 View Post
Oke thanks Ill try that.

I replaced the rubber tube to the Valve because it was cracked sucking false air in, cleaned the icv better did the throttle valve also while i was at it . Ill keep you updated!
Did this end up fixing your issue??
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