I am thinking of buying a 2008 Scion tC which has the "Check Engine" light illuminated. A local Toyota dealer's service shop looked the car over and said the check engine light was on because the car needs a new evaporator purge valve. I was told by a friend that this is not a major problem and does not need to be taken care of immediately. He also said that it is an easy repair that a beginning Do-It-Yourselfer could do. The Toyota dealer's estimate to do the repair is $370 including .8 of an hour in labor. Based on the above, I have 3 questions. 1. Does this problem need to be taken care of immediately, or will leaving it unrepaired possibly lead to other problems? One thing bothering me about delaying the repair is that there could be future "check engine" issues that come up and I won't be aware of them because the check engine light will still be on until the purge valve is replaced. 2. Since the dealer is estimating that it would take almost an hour to replace the purge valve, I'm wondering how easy it would be for a beginning DIYer to replace the valve. 3. Does the $370 repair estimate seem reasonable?

I would an opinion on this subject please. Last year my wife took her 2015 Chevy Equinox to work. When she went to start it to come home it showed flashing ck engine. So she called me and I went there and checked it out. It started but would only go 20 mph and showed stability off. I called the local Chevy dealer and he "you can drive it in to us no problem" This would be 20 miles or more. I had it towed on a flat bed and left. . The next day I received a email with a photo of a message "after removing engine cover it was found a rodent had chewed some wires which it showed on the left of the engine. My bill was for 13hours labor and 13.60 for the wire loom chewed. I had talked to people concerning this and they said it sounds like the dealer does not know as much as he should. Do you think it would take this 13 hours to diagnose this problem. MY concern is..At what point did they decide to pull the engine cover? I mean it is only 1 bolt and remove the dipstick and lift it off. This is v6 engine. The car had only 8000 miles on it. Should I trust the dealer again? Thanks for any feedback