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A warm Acura RSX should not remain at 1,500 or 2,000 RPM. Diagnose vacuum leaks, throttle operation, IACV control and PCM sensor data before adjusting anything.

An automotive noid light is to test the fuel injector operation in any EFI vehicle. Problems with your fuel injector can cause your engine...

Independent testing sends the 5,960-pound Porsche Cayenne Turbo Electric to 60 mph in 2.1 seconds and through the quarter-mile in 9.5 seconds.

Seeing 12 volts at a connector doesn't prove the circuit is healthy. Learn how automotive wiring load tests expose corrosion, weak terminals, damaged wires and other hidden resistance.

One of the greatest four cylinder engines to ever leave Japanese shores, the 4G63 is a powerhouse of a performer. Capable of reaching well...

LS1 crankshaft runout is checked at the No. 3 center main journal with a dial indicator. Learn how to measure crankshaft straightness, identify excessive runout, and determine whether an LS crank may be bent before assembling the short block.

When the Impala MAF Sensor in your 3.5 liter Chevy has gone bad, you're going to have a variety of issues with your sedan. This...

There's quite a few things that can go wrong when it comes to your alternator, from battery failure to sluggish performance. This is why...