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Old 02-10-2014, 01:34 AM   #1
Mgrwc14
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2 problems... Lights and idle

1. The lights kind of flicker (all lights: dash, headlights, roof light) when idling. But when I give it gas it is fine. Idk what it is...

2. I don't have a rpm gauge but I can kind of feel an up and down idle... Not too bad but I know it's there and it's annoying and there's some vibration when at idle too..


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Old 02-10-2014, 06:23 AM   #2
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Quote:
Originally Posted by Mgrwc14 View Post
1. The lights kind of flicker (all lights: dash, headlights, roof light) when idling. But when I give it gas it is fine. Idk what it is...

2. I don't have a rpm gauge but I can kind of feel an up and down idle... Not too bad but I know it's there and it's annoying and there's some vibration when at idle too..
Possibilities...
Issue#1 Could be the alternator getting ready to crap out or a ground wire that is not properly grounded.

Issue#2 Could be the passenger side motor mount. Doe's it vibrate more at start up and then less when the engine has warmed up ? If so that's a good sign of a bad mount.
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Old 02-10-2014, 11:30 PM   #3
Mgrwc14
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Issue 2 is fixed. Was the passenger motor mount! Feels like new!

The first issue is this there. Do you know where the main ground is? I know most cars have it on the fire wall... Is it on there? Please let me know..
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Old 02-11-2014, 01:24 AM   #4
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No single "Main Ground".

Closest is the ground from battery to engine block, but the small ones to the body from the battery are also important.

Connections from battery to wiring harness are worth checking as well, have caused problems for some.

Battery terminals themselves are a regular source of many issues.

For your issue, battery and alternator testing could help after you check the major grounds. (free at many parts stores)

You could check voltage at idle yourself for a start, shouldn't drop low at idle.

Luck!
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