 |
|
Guy Fiero - The Revenge of The Hiccup |
Pick One:
|
Remember that strange hiccup from about 2,000 miles ago? Yeah, it's time. The Saturday previous to this incident, I had gotten out of work and immediately drove from my job in The Glorious State Of Pennsylvania, to New Jersey for a family event. It was very important to bring the Fiero, as my sister had recently blown her engine in quite a comical way, and I needed to show off my still-running shitbox. I ended up driving around for over 4 hours, and the Fiero gave no complaints whatsoever. I was so proud of him. The following Monday, I was about to leave for work again. I even went and took the sunroof off and everything, then I went to turn the key. It did not start. Well, it did start, it just wouldn't run. The engine would fire up, then immediately die. I played with it for a few minutes and eventually got it to start using flood mode, but I wasn't confident in it, so I decided to take Mr. Saturn to work instead. When I had more time to dedicate to it, I played with it a bit more. Disconnecting all sorts of sensors had no effect. Eventually I managed to get it to idle roughly so I could check the injector spray, which seemed fine. This suggested an air problem. What about the IAC? The IAC is the Idle Air Control (valve). Believe it or not, its job is to control how much air the engine receives at idle. In reality, it's just a stepper motor controlled by the ECM that screws a plunger in or out to increase or restrict airflow. Given that it's just a stepper motor, the computer actually has no idea where the motor is. To solve this, the computer keeps track of each movement of the motor, that way it knows where it should be. This is notorious for causing issues, because when the battery is disconnected the computer loses this information. This causes the car to idle horribly until it can recalibrate itself. So, what is the computer has just lost track of the IAC somehow? The fix for that would be to simply drive the car. So I did. And the car ran perfectly fine after that. This has happened a couple times since, but you can always get the car started by giving it a little gas. From there a quick drive takes care of it.
|
|
