My wife's van had these codes stored and the idle changes from 700 to 1400 and back to 700 every 20-30 seconds, she said it mostly stays at the high idle. we're separated so I don't have continued access to it, so I'm looking for some ideas to look at next time I see it. I cleared the codes and didn't get any instant codes again, but it was still idling high. I read on here that the pcv hose can cause a lot of idling problems, but would it cause all these codes? What else should I be looking at? Thanks, Tim
The codes are mass air flow sensor,manifold pressure, intake air temp, catalytic converter.
The only thing I cant think of is that the manifold seals are defective and theres no back pressure which would explain the erradic idleing.
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