Idling Problems - Check those vacuum lines are routed correctly

Technical info on the Pontiac Vibe and Toyota Matrix including do-it-yourself info
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Sooke
Posts: 1
Joined: Wed Jun 13, 2018 1:04 pm

Idling Problems - Check those vacuum lines are routed correctly

Post by Sooke » Mon Jul 23, 2018 4:44 pm

I bought a 04 Pontiac Vibe that needed a clutch, and after installing a new one, engine idle was all over the place. I cleaned the throttle body and MAF sensor,and checked that Idle Control Solenoid was moving freely - no difference. I was contemplating replacing the intake manifold gasket, but I decided to check again for vacuum leaks. No leaks, but when I checked the vacuum hose routing diagram under the hood, I discovered that 2 vacuum lines were routed wrong, easy to do because they are the same size and in the same area. Switched them over and no more erratic idle.

andrewclaus
Posts: 187
Joined: Tue Oct 03, 2017 6:38 pm
Location: Golden, CO

Re: Idling Problems - Check those vacuum lines are routed correctly

Post by andrewclaus » Tue Jul 24, 2018 3:57 am

Great job finding that before randomly replacing parts like so many do. Many of us miss the big picture at times.

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