Vacume guage problems please help

[Socalman95]

Hello everyone I recently lost control of my vehicle and hit a curve on the rear driver side. I ended up breaking the lower control arm and bent my wheel pretty bad. Everything is fix and have new set of wheels. Runs great but I notice when I read the vacume on the screen it's not a steady reading. When at a stop light it reads 19.3 then drops to 18.4 then back up to the 19.3 and the idle sounds unsteady. Any idea what this means? Please help.

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[ORRadtech]

I don't know the emissions system very well on this car yet but past experience is that they put components everywhere.
I would suspect that you have a cracked vacuum canister or damaged/loose line somewhere.
Pop the hood with the engine running and see if you hear any odd hissing. Or, again with the engine running, spray vacuum lines, connections, canisters, etc with water and see if the engine reacts.

 

[ORRadtech]

I just reread your post. If the damage was the rear of the drivers side then that's where the fuel filler is. Often lots of emissions stuff between the filler and the tank and the engine. I'd be sure to check everything in that area as well, probably even first.

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