Headlights and dash lights filcker

JEEPLOVER

MEMBER
1998 JEEP GRAND CHEROKEE
15,600 MILES

98 jeep gc 5.9liter - When light switch is on at night I have replaced the headlight switch. Headlight an dashlights filcker when in use driving at night

Monday, October 3rd, 2011 AT 5:14 PM

4 Replies

JACOBANDNICKOLAS

MECHANIC
109,896 POSTS

Check for bad body grounds. Also, you may want to have the voltage regulator tested (part of the alternator). If it is going bad, you can sometimes see flickering in the lights. Also check the headlight switch.

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Monday, October 3rd, 2011 AT 5:30 PM

JEEPLOVER

MEMBER
3 POSTS

Thanks for the help I checked the grounds seem to be tight an clean I will have the voltage regulator tested and post my results. Thanks again

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Monday, October 3rd, 2011 AT 5:41 PM

JEEPLOVER

MEMBER
3 POSTS

I was told by parts store that the voltage regulator is not part of the alternater it is within the [pcm] power train control module an must take it to a dealer also the lights do not filcker when engine is off only when its running please help!

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Friday, October 7th, 2011 AT 2:40 AM

JACOBANDNICKOLAS

MECHANIC
109,896 POSTS

If that is the case, the PCM will need replaced. Have them check to make sure that is the problem. I thought they stopped doing that in the early 90's.

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Friday, October 7th, 2011 AT 2:52 AM