Help with 2002 Mustang V6 - Possible Alternator Issue - Ford Mustang Forum
 
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post #1 of 9 (permalink) Old 12-13-2010 Thread Starter
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Help with 2002 Mustang V6 - Possible Alternator Issue

Hi all, I am new to this site and a woman so please bare with me. I have 2002 Ford Mustang and been having issues with it, I had a alternator put in it las year and then this past week it started to fail and had to have it replaced. Yesterday I got in the car and the heater go from warm to ice cold and the service engine light is on. Please tell me what that could be? I been told by auto zone it is the thermostat or the 02 sensor and then they said it could be the heater core, has anyone else had this issue?

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post #2 of 9 (permalink) Old 12-13-2010
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Welcome to AFM! Laura! Is your Mustang the 4.6 V8 or the 3.8 V6 model? Let us know and we can move this post to a section of the site here where you can get some quicker help.

Thanks!


post #3 of 9 (permalink) Old 12-13-2010 Thread Starter
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It is a v-6 and thanks for your help!
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post #4 of 9 (permalink) Old 12-13-2010
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No prob! Let's move this to the V6 Tech section and see if the guys and gals there can help you out. Do you have an aftermarket stereo or any other electronics added that might be messing with the alternator? Also - if you have an Autozone near you they can hook up a diagnostic tool and see what "code" is being generated that is turning on the Check Engine Light. If you find out what the code is we can help narrow your problem down further.

Keep us posted!
post #5 of 9 (permalink) Old 12-13-2010
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Quote:
Originally Posted by laural0225 View Post
Hi all, I am new to this site and a woman so please bare with me. I have 2002 Ford Mustang and been having issues with it, I had a alternator put in it las year and then this past week it started to fail and had to have it replaced. Yesterday I got in the car and the heater go from warm to ice cold and the service engine light is on. Please tell me what that could be? I been told by auto zone it is the thermostat or the 02 sensor and then they said it could be the heater core, has anyone else had this issue?
if its the thermostat then your car should run a little hot since the fluid would not be flowing all the time

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post #6 of 9 (permalink) Old 12-13-2010
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If the temperature in your car goes from blowing hot to cold, then I would lean towards the heater core (or some other part of the A/C).

A bad thermostat would cause overheating, as David suggested.

And an O2 sensor would affect your mpg, or nothing at all, depending which one. Like Snackmaster said, get any and all of the "error codes" read at a local auto store and post them up here. We can better diagnose your problem(s).

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post #7 of 9 (permalink) Old 12-14-2010 Thread Starter
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I will be going to Auto Zone today at lunch. Yesterday on my way home from work the heat came out HOT.. Service Engine light is still on though. Snackmaster I have the original stereo system that came in the car.. I am so confused I cant figure this car out for the life of me I will post the results from Auto zone and all your help is greatly appreciated!!! And thanks for the warm welcome!
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post #8 of 9 (permalink) Old 12-14-2010
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:celebration::hello:

oh i forgot to say welcome to the forum

BV heads, P&P lower, windstar upper, comp 218/226, 4.2 bottom end, 3k stall, flow 40's, O/R x-pipe, Pacesetter lt's, Xcal2, 65mm tb, CAI, 8.8 w/ 3.73's, MM LCA's
coming soon: blower cam and intercooled M112
dealer for Ortiz Performance; tunes, cams, etc. PM me!
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post #9 of 9 (permalink) Old 12-15-2010 Thread Starter
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Thank you so much! You guys make me feel so welcome!!!!:smilie
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