Motor stalls

[Peyton]

Ok everyone thanks for all the advice on my other problems.  I have everything working great but now When I'm at an idle and the electric fan comes on it stalls the motor. Its a new fan and a rebuilt alternator 104 amp. I'm stuck on this one any ideas

Thanks
Dave

[SteveTheFolkie]

to me it sounds like you're not putting out enough voltage at idle to keep your ignition working.  Check your grounds, rust, paint and under-hood goo aren't very effective conductors.  When you're sure the grounds are good check the voltage the alternator is putting out at idle - there's a wide range of quality when it comes to rebuilt electrical components - it can range from a quick bath in a part washing tank followed by a blast of fresh paint to a rue rebuild where the everything is inspected, bearings replaced, windings redone, reassembled and tested -

[Peyton]

Sorry for the delay thanks it was my ground. Thanks again