Why Does Your Battery Go Dead?

“Why does my car or truck battery go dead?” is probably the most common question asked in the world of automotive electrical repair. The reasons can be broken down into four general causes. The battery is faulty. The charging system is not working properly. There is a drain on the system. Faulty cable connections The … Continue reading “Why Does Your Battery Go Dead?”

2008 Chevrolet Cobalt, Blower Inop

This 2008 Chevrolet Cobalt came in with the complaint that the blower motor did not work at all. It had been working intermittently. Looking under the passenger side of the dash behind the glove box  I found the two wire harness connector at the blower motor. The brown wire should have had battery power on … Continue reading “2008 Chevrolet Cobalt, Blower Inop”

2005 GMC Sierra, Multiple Misfires

This 2005 GMC Sierra came in with a poor run condition and multiple misfire codes stored. Code P0304 was one of the misfire codes stored. While looking at data I noted that misfires on cylinder #4 were markedly higher that most of the other cylinders. Normally when confronted with high misfire counts on this engine … Continue reading “2005 GMC Sierra, Multiple Misfires”

2003 Pontiac Grand Am, Fuel Pump Test

I had already replaced the fuel pump in this 2003 Pontiac Grand Am and while I was letting it run, I decided to check the amperage draw of the new fuel pump. I had already installed a fused jumper wire so I had easy access to connect my low amp probe. The picture above reads … Continue reading “2003 Pontiac Grand Am, Fuel Pump Test”

Scan Tool Will Not Communicate / Power Up

Although the vehicle I am working on is a 2005 Cadillac Escalade, this information is relevant to many OBD2 vehicles. The Tech 2 makes it simple because the tool does not have it’s own battery supply. therefore if the scan tool will not power up there is a basic problem with power or ground to … Continue reading “Scan Tool Will Not Communicate / Power Up”