- 02-25-13 10:37 PM #1Cadillac Owners Member
- Automobile(s): Escalade EXT
- Join Date
- Jun 2010
Can someone identify this from my intake manifold?
I've recently got codes P0171 and P0174 which suggests my truck is running lean. The first thing I checked is for unsealed vacuum lines into the intake manifold because I thought I was hearing suction. I finally narrowed it down to something that appears broken. With the engine running, I covered the hole with my finger and my truck instantly started idling more smoothly. See the pics below.
What the heck is this and how do I fix it? Please excuse typos as I am posting from my iPhone.
- 09-29-13 06:12 AM #2Cadillac Owners Fanatic
- Automobile(s): 99 STS VIN 9
- Join Date
- Nov 2011
Re: Can someone identify this from my intake manifold?
Thats some type of vacuum port that broke
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