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Old 01-31-2012, 12:14 PM   #36
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My battery was unhooked when I replaced it about two months ago. I think that's about when it started having trouble

---------- Post added at 01:14 PM ---------- Previous post was at 01:12 PM ----------

But it started before I got a new battery because that's why I got one. I thought that the other one was too weak but it got worse when it got cold out
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Old 01-31-2012, 12:26 PM   #37
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I ment like within the last few days or just b4 it started the last time and was seeking alot (bouncing around in rpm)
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Old 01-31-2012, 12:54 PM   #38
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No not recently
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Old 01-31-2012, 10:27 PM   #39
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When I started it today it started but the low fuel light came on and the rpm was going up and down for about five seconds then the light went back off and it ran normal
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Old 01-31-2012, 10:58 PM   #40
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Thats ether a clug in the fuel system weather its injectors/fuel filter/faulty fuel pump but the low fuel light is probly related to the float on the pump so changing it will help.(the pump that is) so u may have more than 1 issue causing ur greef i have seen pcm issues cause similar problems though so...

How many miles on the car? It may be wise to change some stuff out anyways for maintanice reasons.

Try a bottle of fuel system/injector cleaner and see if it helps any its cheep and swap out ur fuel filter its prolly due and should help some.
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Old 02-01-2012, 02:23 AM   #41
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Hawk has been right the whole time, please listen to him. The clicking sound is what happens when the solenoid on the starter starts to go bad. Having the old week battery was the only thing keeping it alive, the new one caused more power and ultimately caused it to give up. Not saying getting a new batter was bad, it just made the problem occure sooner. and to re-enforce what hawk said, it sounds like you have more than one issue, but this is where my experience ends.
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Old 02-01-2012, 09:24 AM   #42
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His help has helped out a lot. I will let you know when it is fixed.
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Old 02-02-2012, 03:23 AM   #43
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The reason i asked if u unpluged the bat recently is because if u had and the electrical system had a chance to discharge completly it would have wiped ur computer and the seeking would be "normal" for a short while the computer needs to relern and retune its self hence seeking till it gets its self dialed in again usually a short drive.

But u say u didnt so...

Still start at the starter and go from there.
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Old 02-02-2012, 05:17 AM   #44
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Re: 2000 mustang starting problems

starter is bad
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Old 02-02-2012, 07:50 PM   #45
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My old stang did the same thing. Finally the starter had quit all together. Luckliy it was a 5 speed so we push started it, drove to the store and picked up a new starter. Really sounds like yours is kicking the bucket.
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Old 02-02-2012, 09:18 PM   #46
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I wish it was a five speed. I prefer manual but hopefully it will get fixed soon before it quits all together
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Old 02-06-2012, 08:39 AM   #47
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We hooked a code reader to it and fuel rail pressure sensor came up.
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Old 02-06-2012, 08:19 PM   #48
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Ok well were difinately close now then. So now there are two paths to go from here and I recomend getting a fuel pressure gauge if ur the D.I.Y. type and make sure your fuel pressue is in specification. If that is fine then you know its the sensor. Also you can test the sensor, expected voltages are between 4 and 6 volts I believe. The other path of course is just replacing the fuel filter since that's a maintenance item anyway, but if that doesn't fix it then get a new sensor and if that still doesn't fix it then we start troubleshooting the fuel pump.
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Old 02-07-2012, 08:02 AM   #49
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We are going to change the sensor and filter this weekend. Hopefully that fixes it if not we are going to go from there. After we fix them both we are going to hook the code reader again and see if any codes come up. Thanks
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Old 02-08-2012, 01:11 PM   #50
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We changed that sensor today and now it starts right up! Completely back to normal. On Sunday we are changing the fuel filter.
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Old 02-08-2012, 02:29 PM   #51
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Awesome!
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