Weird Idle/Power Issue

[mikeharriswho]

Hey guys,
I have a 2000 V6. Having some weird issue. I crank it up and it runs fine and randomly the right turn signal will light up and the engine will have an extreme rough idle. If you try to drive the engine will die. Loss of all power. It will crank back up and run but then the right turning signal will come on constant again and the idle probems start. I seems like this starts to happen after pressing the brake. Anyone ever hear of this?

 

[wmburns]

If this were my car I would be worried about one or more weak grounds. The cluster is grounded at G204 which is located behind the center console. G204 is shared with many devices including the GEM and Radio. It's frequently messed up during a radio install.

However given your symptoms the weak ground could be anyway. In the trunk or right at the battery.

Here's is some information on how to run a voltage drop test. If you understand the "concept" this test can be used to locate weak ground no matter where it is.

Howto perform charging system voltage drop test

Howto perform charging system voltage drop test

To anyone else reading any of my posts I usually include the line: Today's cars simply will not run right without a strong battery and charging system! Cut corners here at your own risk I'm a big believer in starting with the basics. As such I...

www.stangnet.com

Suggest starting with the battery grounds and the grounds around the radiator core support. Are they CLEAN and tight?

Is the motor grounding strap in place between the left hand motor mount and frame rail?

At the very least start with a through review of the battery, battery cables, and alternator.