Question about 1990 Chevrolet Suburban

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90 suburban wont start

Truck has been daily driver.went to start and got poof of white smoke from vents at bottom of i have no power to inst panel but still have headlights and dome lights.stereo(aftermarket)will eject and take in cd's like before,butalso doesn't react to turn of key.nothing happens at all when i turn the key.

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Check your main fuse. Sounds like a short somewhere in your vehicle, but white smoke could be a few things like main fuse blowing. Computer popped. Engine blew.

Posted on Apr 13, 2009


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Under your hood, on the firewall just above and too the left of your master cylinder is a black terminal that has two studs sticking out of it with about six or seven wires running to it, you may want to make sure that they are all intact. The fact a puff of white smoke came out of those vents is likely an indication of an electrical problem under the hood. This would also explain the starting situation, the instrument lights, etc. The symptoms you are describing say there is a short in your electrical system, more specifically your ignition. the reason the cd will still eject is because that function is run from the direct power source that provides your deck with memory for channels and cd tracks etc. Also, with that puff of white smoke, you probably lost your accessory fuse/ radio fuse. If it got hot enough to smoke because of the short, it definitely popped a 25-30 amp fuse. If the wiring under your hood is original, check to make sure you are not shorting out through the primary cable that goes from your positive battery terminal to the alternator. This cable goes across your intake manifold, thrrough a loop connected to your thermostat housing and then up to the back of the alternator. there maybe a bare spot in the wire cloe to that loop causing the whole mess.

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Could be an incorrect refrigerant charge or defective pressure switch causing the evaporator to freeze and the air flow over it is causing the ice to melt and the resulting white smoke is condensation

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