Bad idle, no obc, no mpg gauge

[Hoffbrohaus]

Just replaced brake booster and fired up car for a test drive. Now my idle is erratic, mpg gauge doesn't move, and no check lights. I checked fuse #10 looked fine but still replaced. No luck. Read about SI board batteries could that cause idle issues? I had disconnected the battery when replacing the booster. But before I disconnected it I had gotten a spark somehow when trying to pull the brake booster out.

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[jlevie]

If the SI board batteries were old, disconnecting the battery even for a short time may have pushed them over the edge. The idle problems are almost certainly intake leaks introduced when changing the booster. A smoke test will find them.

[Hoffbrohaus]

Yep found the leak. Looks like I bumped the dipstick at some point. Hard to believe that's enough to make it stumble. Now I'll check the SI batteries. Thanks for the help!

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