Car won't start after recent work on vacuum lines and breather hoses. All looks well and is put back right, but car barely starts and when it does it grumbles and sputters.
can a vacuume control valve be the cause?
About a month ago I changed my VCG and a the next day my CEL appeared.
I took it to my mechanic twice with the codes po491 and po492, but the CEl comes back on. He said the vacuum lines were brittle , and this sort of thing just happens. I took it out on the beltway last weekend and it did...