4.2 40v normal engine idle? - Club Touareg Forums
 
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post #1 of 3 Old 04-30-2019 Thread Starter
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4.2 40v normal engine idle?

Thought I had a leak. Put on a gauge at idle I have 18 inch HG and if I squeeze the connector to the gauge to make a tighter seal it creeps to twenty. Iím not sure what itís supposed to be but between 18-21 seems like thatís not a huge leak or normal.

I have a code for mechanical brake vac pump failure. But the thing whirs on and off in vag com basic settings output test.

I have crappy city mileage, also cats below efficiency codes. Iím guessing thatís the root of it. Iím guessing I have clogged warm up cats. I wanted to rule out the potential mechanical pump hosing vac leak.


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post #2 of 3 Old 05-01-2019
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What code are you getting for the vacuum pump?

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post #3 of 3 Old 05-08-2019 Thread Starter
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Quote:
Originally Posted by benny82 View Post
What code are you getting for the vacuum pump?

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Mechanical failure, works on and off fine in vag com test.


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