WhitAlpin Posted January 10, 2006 Share Posted January 10, 2006 Questions: 1. Is it safe to test your alternator by starting you car and then disconnecting the negative on your battery to see if the car still runs? I have read conflicting reports, it is bad to do on "newer cars" but it might be an easy way to test older cars? I have a 1986 GL-10 Turbo. 2. The code 35 Air Flow Meter/EGR Solenoid Switch or Circuit was flashing when i tested it...how vital is that to fix? How would i go about fixing it? Thanks Nate Link to comment Share on other sites More sharing options...
NoahDL88 Posted January 10, 2006 Share Posted January 10, 2006 Autozone will test an alternator for free, i'd suggest letting them do it, as i don't really know how you'd test it in the car with it disconected and the car running. Link to comment Share on other sites More sharing options...
SuBrat84 Posted January 10, 2006 Share Posted January 10, 2006 They were referring to disconnecting the battery to see if the alternator is still putting off enough power to keep the other systems running. I hope it isn't a problem to do that because I swap batteries with my cars running all the time. Edit: It is not an accurate way to test your alternator.. you should have autozone do it.. or if you know someone with a multimeter have them test the voltage should be around 14 at idle. Link to comment Share on other sites More sharing options...
WhitAlpin Posted January 10, 2006 Author Share Posted January 10, 2006 Do i have to take out the alternator? or can i leave it in the car? Link to comment Share on other sites More sharing options...
mudduck Posted January 10, 2006 Share Posted January 10, 2006 Questions: 1. Is it safe to test your alternator by starting you car and then disconnecting the negative on your battery to see if the car still runs? It won't hurt anything to do that. It will show you if its charging or not. Using a multineter is a better way, as it shows how much the alt is putting out. Link to comment Share on other sites More sharing options...
Mark Humble Posted January 11, 2006 Share Posted January 11, 2006 Don't remove the battery cable to see if the engine will stay running. This can damage all kinds of things. Most people don't have the right equipment to test an alt, so take it to someone who does. Link to comment Share on other sites More sharing options...
jimpon Posted January 13, 2006 Share Posted January 13, 2006 according to the fsm DO NOT DO IT. YOU RUN THE RISK OF FRYING SEVERAL DIFFERERENT SYSTEMS. Jim Link to comment Share on other sites More sharing options...
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