Starting Problems

WENDY · 04-09-2007, 10:59 AM

I Have A 99 Gt Mustang With 113,000 Miles I Have Replaced The Battery And Alternator, But If It Sets For More Than One Day It Has Problems Starting, After 3 Days It Needs To Be Jumped Started. What Could Be Causing This?

USMC302 · 04-09-2007, 02:33 PM

Bad ground possibly. You need to put a meter on it and see what kind of voltage it's putting out with the car off key on, and key on car off, and then key on car on. Compare those with the readings 1 day later.

goodyear1984 · 05-05-2007, 12:00 AM

it has a draw...the easyest and best way to check is to take the neg battery terminal off and use a multimeter ...hook up the ground side of the meter to the neg batter side and the pos to the neg terminal....make sure the key is off and the door is closed.every thing off even the hood light if it has one..then turn the meter to check amps..if it was normal there will be less that one amp draw...now u pull fuse one by one and when u see the amps drop thats the circit with the problem and u have to figure out whats drawing on that circit....if u cant check it by amps u can check it by volts but its not as accurate....no more than 4 volt draw checked the same way

04-09-2007, 10:59 AM	#1
WENDY Registered Member Join Date: Apr 2007 Posts: 1	Starting Problems I Have A 99 Gt Mustang With 113,000 Miles I Have Replaced The Battery And Alternator, But If It Sets For More Than One Day It Has Problems Starting, After 3 Days It Needs To Be Jumped Started. What Could Be Causing This?

04-09-2007, 02:33 PM	#2
USMC302 Registered Member Join Date: Apr 2001 Location: Gallatin, Tn Posts: 1,326	Re: Starting Problems Bad ground possibly. You need to put a meter on it and see what kind of voltage it's putting out with the car off key on, and key on car off, and then key on car on. Compare those with the readings 1 day later. __________________

05-05-2007, 12:00 AM	#3
goodyear1984 Registered Member Join Date: Dec 2006 Location: new york Posts: 482	Re: Starting Problems it has a draw...the easyest and best way to check is to take the neg battery terminal off and use a multimeter ...hook up the ground side of the meter to the neg batter side and the pos to the neg terminal....make sure the key is off and the door is closed.every thing off even the hood light if it has one..then turn the meter to check amps..if it was normal there will be less that one amp draw...now u pull fuse one by one and when u see the amps drop thats the circit with the problem and u have to figure out whats drawing on that circit....if u cant check it by amps u can check it by volts but its not as accurate....no more than 4 volt draw checked the same way __________________ 347 stroker all forged,arp everything,stud mains w/girdle,7qt pan,full roller, custom cam, aluminum heads swirl valves 5 angle valve job.quick fuel 750,areomotive pump,cobras w/nitto drags,and m/t et drags for the track, ford racing 373 gears,centerforce clutch,tko500,underdrive pulleys,bassani x-pipe,flowmasters ^best et so far 11.6 1.61 60ft coming soon 9sec et's 1992 mustang gt 2001 gmc 1500 4x4 78 century boat 92 skidoo

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