So you come out to start your car one morning and the Check Engine light on the dashboard comes on…and doesn’t go back off again. You can’t really notice any difference in the way the car runs and drives, but it’s on anyway.
What does it mean?
Since the late 80s, most engine functions have been controlled by a central drivetrain computer. This includes emissions controls, fuel metering and delivery, ignition timing, shift points and many other elements of drivability and performance. The drivetrain computer relies on information from a chain of sensors that monitor exhaust composition, camshaft position, throttle position and many other factors.
The voltage readings from any of these sensors are supposed to fall within a certain range. Whe ...[more]
- Thermostatic expansion valve
Often, drivers are mystified by how their cars actually work. It’s to be expected. Even an older car is a complex machine with many sub-assemblies that all work together to move it down the road.
As a result, drivers tend to be a little intimidated by auto repair and often tend to not inform themselves by asking the necessary questions of a tech or a garage. Too often, that ends up being a big mistake. Here are some examples of the kinds of things you really should know before any auto repair work starts:
- Does your shop work on any kind of vehicle? Of course, most shops can service a product from GM, Ford, Chrysler, Nissan, Toyota and the other leading makes. Some makes, however, require a lot more training and experience, ...[more]
The temperatures are inching upward, the days are getting longer and the first buds are starting to appear on the trees. Spring is on its way, and soon it’s going to be time to do a little preventive maintenance on your ride. No need to dread it -- it’s all pretty routine stuff!
- Air filter - If you haven’t changed your air filter since last year (or can’t remember when you changed it at all), it might be time. It’s an easy and cheap fix, and it pays off in your vehicle’s performance and fuel economy.
- Cabin filter - Older vehicles often don’t have a cabin filter, but it can make a lot of difference in how pleasant your vehicle is to drive. Stale, smelly air? Change it!
- Wipers ...[more]