What would cause the idle to drop when headlights are switched on a 2.5 ls10
WHAT IS AN
2.5 ls10(Maker, model car and year ,not told) VW?
what? car? 2.5Liter.
not old if headlamps both work? GLOW right.?
car drives full speed, full power no problem?
engine is cold or normal hot?
2 THINGS
ENGINE SUPER LEAN
AND IDLE CONTROLS DEAD (IAC valve)
BOTH !
HL ON, IS ONLY ABOUT 10AMPS CURRENT FROM THE ALTERNATOR, rated 50 to 100amps.so is only 1/5th HP power drain
means nada. 50 amps 1HP load. ALT to Engine.
but if engine is super lean ?
what is RPM of engine when this happen 800 or 400
400 is no good.!
or 3 things wrong, HL shorted, IAC is dead. and engine lean
or RPM so low alternator goes off line, HL all dim
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