John's 4X4 Center
6367 Arapahoe Rd, Boulder, CO 80303 303.449.2640

Electrical

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Alternator

You’ve probably noticed a bunch of warning lights on your dash when you start your engine.  They flash on to test the circuits and then go off if everything’s OK.  One of the war...
Published on: Jul 13, 2023

Alternator Replacement at John's 4X4 Center

Many Boulder drivers have probably noticed a bunch of warning lights on their dash when they start their engine. They flash on to test the circuits and then go off if everything's OK. One of the warni...
Published on: Jan 23, 2023

Alternator

Your alternator makes electricity to start and run your engine and all the electrical systems in your vehicle. That’s everything from the on-board computers to the turn signals. And of course, t...
Published on: Jan 10, 2023

Alternator Facts (Alternator Diagnosis and Repair)

When your vehicle doesn't start, the first thing you think of might be the battery.  That may be the culprit, but it also might be that your alternator has gone bad. An alternator sends power to...
Published on: Apr 03, 2022

Alternator

{{ image('MzUx') }} Question   My battery keeps going dead.  I had it tested and it is fine - what could be the problem?   Answer   Well, your problem could be caused by sev...
Published on: Jan 20, 2022