Volvo AWD 850 Forum

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95 850NA Warning lights on with key OFF ! 850 1995

'95 850 runs fine....turn key off & engine stops but instrument warning lights stay on. Tried pulling relays & even disconnecting ignition switch connector, no change & eventually battery runs down.








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If the idle control motor next to the throttle body still runs, I would suspect you might need a new switch. In the meantime, keep a 10mm wrench handy and disconnect the ground on the battery.
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My name is Klaus and I am a V♂lv♂holic



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Idle control motor is not running when engine is off & dash lights are on.



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Short in wiring. I would look around the alternator and see if the small wires are not chaffed and touching, or loose.
--
My name is Klaus and I am a V♂lv♂holic



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More attempts at diagnosis! Removed all relays underhood. First one at atime then pulled them all. Dash warning lights still on. Unplugged ignition switch= lights still on. When reattaching battery cable fuel pump would run.
Outdoor temp warmed up from 20F to 50F. Hooked up battery & dash lights were OFF !
Engine flooded, so pulled plugs & added a bit of oil to cylinders. Engine starts & drove 20 minutes. Note ! KEY chime was dinging all this time. Shut off engine & warning lights are ON. Restarted & drove for 5 minutes, shut off & no warning lights. Chime starts as soon as key is put in ignition. Closing door & chime continues. When warning lights are on no other accesories work.
When first got car, light for driver's footwell was always on & bulb was removed. Dome light has always worked normally.



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When my 140 did that it was a bad diode in the alternator.
Can't be sure that's the same with an 850, but who knows.
--
"Differences of opinions should be tolerated, but not if they're too different' - Sharon Craig



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