Oil starvation foretells imminent engine seizure, which is disastrous at speed. You don’t want to mess around with this one. If this light goes on, pull over immediately and shut off your engine. In that case, manually disable the system and bring on the squiggles. Conversely, sometimes you want wheelspin (like if you’re stuck in snow or sand, or entering the burnout box at your local drag strip). If this light is flashing intermittently, you’re overcoming the available traction and you might want to back off the gas. You might be sweaty, but that’s a little less heat in the cooling system.
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If you’re desperate to get to where you’re going, turn your heater on full blast.
But if the needle’s pegged to the letter H (or if you just don’t know), shut it down.
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Visit a garage, or check the code yourself with an OBD scan tool.ĭoes your car have a temperature gauge? Consult that to find out just how hot is hot-a little bit too hot, you can still drive it to wherever you need to go. That means you will fail your next inspection. However, it might pertain to a bad signal from an oxygen sensor or some component of the emissions system. Your voltage has probably dipped too low to crank the starter.Įver been in a cab with a permanently lit check-engine light? It still ran, right? Indeed, the check-engine light isn’t typically going to indicate an ailment that’ll strand you. If it’s lit before you start your car, find some jumper cables. Get thee to a safe spot to call roadside assistance because time is running out. So if one doesn’t match the other three, the light comes on. Most tire-pressure-monitoring systems aren’t actually measuring pressure-they’re measuring speed at each tire. This is a cheap (and faster) fix for a mechanic. Beware busted knuckles and the effort required for safe disposal. Likely Cause: A bad charging system means it’s time for a new alternator.Ĭan You Fix It? Maybe. If a weight fell off a rim, go to a tire shop and get the wheel rebalanced. If it’s winter, you might have snow or ice inside a wheel, which is easy to knock out. The question is why.Ĭan You Fix It? Maybe. Likely Cause: One of your wheels is out of balance. Don’t trust your roadside jack to support the car when it’s up for longer than a tire change. New brake pads are an easy fix, but you’ll need a few tools. Likely Cause: The wear bars on your worn-out brake pads are making themselves heard.Ĭan You Fix It? Yes. Wheel squeak that goes away when you brake. You can put a new belt on yourself, usually by loosening one component, either a tensioner or the alternator. Likely Cause: The serpentine belt, which drives every important engine part, is slipping.Ĭan You Fix It? Yes. The Idiot's Guide to Diagnosing Your Car 4.
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