Question about Chevrolet Cars & Trucks
Or if it wont start by turning the switch on or off it will sometime start by pulling the plug out and back in of the resistor
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Posted on Jan 02, 2017
SOURCE: Blower Motor problem
Sorry but most that I can give would be generic as Pontiac Grand Prix are not that common in my country. I am assuming you are referring to the fan/blowers of the A/C unit.
Based on your description and from what little I know of the circuitry/wiring of current blowers:
1. the clicking sound would be a relay engaging and therefore the speed selector switch could be assumed to be operational since it can trigger the relay;
2. the day time running lights and auto night lights turning off when engaging the fan switch indicates possibly a common supply problem. This could be a wire or terminal in the fuse block. This common B+12 supply logically would be split into several including the fan blower fuse and the lights fuse. It is also possible that said terminal is corroded or has scorched marks preventing full flow of current or be disconnected intermittently;
3. since you have changed the resistor (presumably known and tested to be good) then the problem lies elsewhere possibly back to #2 above;
4. I would discount any ignition problem as it would be more engine related and has nothing to do with the fan/blower except that it share a common IGN B+12 which again points back to possibly #2; and
5. Though am not sure, but I think your car has also a blower motor control processor which also could be at fault.
I believe your best option would be to use a DVM to check for the presence of B+ supply to the fan motor while going through the switch settings (1 to 5). Thereafter trace back until you reach the resistor and its input of +12, go further back and trace it to the fuse holder and eventually to the common supply. You would have three (3) B+12, a) always ON; b) IGN ON; and blower switch ON.
Would appreciate a post back for any developments or results of your voltage checks.
Hope this be of initial help/idea. Again, pls post back how things turned up or should you need additional information.
Good luck and kind regards.
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Posted on Jul 04, 2008
It is the blower motor resistor. it is located under the dash in between the wiring and the blower motor. It is a little hard to remove the attaching screws.Because of the small space to work. But it can be done. It is a small gadget not a resistor as in TV resistor.
Posted on Jan 09, 2009
This sounds like a weak battery or corrosion on the battery cable connections. The sound you hear is the relay and not the cylinoid.
Posted on Jan 13, 2009
SOURCE: saturn ion,sometimes wont start
The problem is in the ignition - the grease gets thick in the cold and doent turn quite right the first time. everything turns on, but the anti theft system thinks you have the wrong key so shuts off pwer to the starter. it takes 8-10 mintues to reset. That is why it normally starts when you come back later. I have had the same problem and done tons of reseach. Right now my temp solution has been a small heater and an extention cord. I keep it plugged in over night on a medium setting - just enough to keep the inside temp above freezing. I am also researching remote starts because saturn dealership charges $250 to replace the ignition, and a remote start will run about $300. Saturn wont do a recall because they feel it is not a safety hazard. I say that is bull. Good luck!
Posted on Feb 04, 2009
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