[Atlantic Xpat]

I have an 02 Frontier crew cab, 3.3L which I bought a month or so ago. I have a problem that the headlights (& the interior dome when illuminated) flicker constantly and annoyingly when the engine is running. The battery appears fine - no starting problems - and the motor is running OK. Any thoughts on what could be the root cause? Alternator, Grounding, Voltage regulator (does the Frontier have a seperate voltage regulator or is it part of the alternator).

Appreciate any insight that anyone can bring to this problem!

Cheers,
AX

 

[TheOregonFront]

turn the bass down on your dank stereo system :laugh:

 

[Q451990]

I'm going to guess it's an alternator problem, but it's just a guess...

Heath

 

[Atlantic Xpat]

I'm going to guess it's an alternator problem, but it's just a guess...

Heath

I have had the truck in for a timing belt change so my mechanic had the alternator checked out. No issues. The search continues!

 

[TwoBills]

I'd clean and grease all your ground points. Start w/the battery terminals and main ground on the block. Look behind the air filter, on the wheel well. Search 'em out. They're all over the place.

 

[04FrontierV6]

Most likely alternator. Had the EXACT problem on my miata. I checked all the grounds and what not, finally decided to remove the alternator and bring it in to have it checked at AutoZone. The diodes were bad. It was even putting out 14v so it was something that couldn't be diagnosed with the alternator in the vehicle. Switched it out with a reman and all was good.

 

[TwoBills]

There's a good, old fashioned, sure fire way of checking out an alternator while it's on the vehicle, but you gotta have your stuff together to do it. I always get flamed when I mention it because a lot of people around here have problems w/reading and comprehending the entire post. So I'll leave it for another day.

 

[Bow]

Loose Ground

Look at all the main grounding points that come off the battery.
Check that they are clean and tight.
Check the Battery Ground terminal that it is clean and tight.