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1998 chevy silverado: Was conducting tune-up, wires, plugs, cap and rotor, Fired up engine and attempted to warm up vehicle by turning on the heater fan. Fan does not work. Fan work prior to tune up. I left dial on level 5 for approx. 5 minutes and smelled and scene electrical smoke. Any ideas.
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Question edited for clarity.
Question moved to model category/
They can only go in one way. The is a notch in the rotor that has to fit on the shaft. It put on wrongly, you can't get the cap on. Take the cap off and try to turn the rotor. It should not move, and be locked in place.
What's missing ? Fuel ,spark , compression ? How many miles on the vehicle ? Does it have spark , pull a plug wire while cranking an hold it near a good ground . Put a fuel pressure gauge on the vehicle , is there fuel pressure ? Do a compression test , 150 psi . engine mechanical problem . timing chain .
Had an 84 silverado 305 that did the same thing. Try giving it a full tune up. Plugs, wires... Mine turned out to be fouled plugs. I didn't find that out till after i tore it down & put a timing set in it. Wasn't getting good enough spark.
I can almost guarantee the engine coolant temperature sensor is faulty or very dirty. You will find it on the top of the intake manifold, just beside the thermostat or upper rad hose housing. It is a 2 wire sensor, brass. It can be removed with a 3/4" or 19mm deep socket. It is the primary input to the engine computer before the O2 sensors take control (after engine warms up). Don't attempt to remove when hot or under pressure, refill and bleed after. You will notice a huge difference to fuel economy.
To do a complete tune up:
Change spark plugs and wires
If equipped with a distributor
Distributor cap and rotor
Fuel filter
Air filter
Change oil and filter
Check all other fluids.
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