Originally Posted by dragunovsks
About 4 months ago I bought a used truck. An 01' Dodge Dakota with 3.9L V-6 and a 5-speed manual tranny. Bout a week after I bought it the check engine light came on, didn't think much about it at first because I had a 97' Dakota 3 years ago and the CE light was on for the last 2 years I had it.
Anyways, I took it to a local auto repair shop and then to another just to get a second opinion about possible repairs. The second shop told me when I put gas in it to make sure the gas cap clicks when I'm done fueling up. Apparently this causes a minor vaccum leak and sets off the CE light. I felt like a duffous.
In my defense, my 88' F-150 that I was used to driving doesn't care about little things like that.
OMG, did the same thing. Had the car 3 days, put gas in it, and on comes the CE.
I'm 10 minutes from the dealer, right back into the lot. I want it looked at now. Can't do it for a week. B.S., get me your manager. The manager's a little blonde twig, and suggests the gas cap. I get really condescending, she sets an appointment for the next day.
I'm leaving, look at the gas cap, and give it a little twist, start the car, light goes out.
I drove off slumped as far as I could into the seat.