I guess this has been a problem that I just didn't notice until it got bad enough to toss a code and make things interesting.
Last night, my check engine light came on and I retrieved a P0404 code for an EGR issue. Odd thing is, my parking brake wouldn't release and my gas mileage is in the tank now at about 16 mpg.
I manually released the parking brake and drove to my destination, where I then traced the vacuum line for the parking brake release to look for a spot where it may have come apart. The lines were still attached the entire way to the intake manifold. Here's what I noticed, when I wiggled the vacuum line, the entire end plate with the manifold blowoff was moving. I am guessing that my vacuum leak is in that piece.
Here are some past symptoms that should have been a tell tale sign.
1. Parking brake didn't always release.
2. Engine stalls when going down hills at low speeds.
3. Poor gas mileage.
4. Poor idle.
5. Hard starting.
So here's the issue, do I replace the entire manifold, or can I get the gasket or seal that hold that end plate in place? I do see that I must pull the intake to get to it because the power steering unit is in the way.
Thanks for helping.
1999 Deville Concours