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Old 01-18-2012, 10:59 AM   #1 (permalink)
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Default Taurus Stalls with Cold Start

Ive been having a problem when cold starting my 2005. If it sits over night in the cold, when I try to start it the next day it will turn over just fine and start, but once it gets towards normal speed (probably around 800RPMs), it dies. Its fast, like its just not getting fuel. If I give it gas, I can keep it running and it goes fine. If it does die, I can just turn the key again and it starts right up and is great for the day. (I even let it sit at work for over 6 hours, with no problems.)

I know the battery is probably weak, but it always starts and Im not sure that would cause it. Could it be the fuel pump? The 2000 never did this...
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Old 01-18-2012, 11:24 AM   #2 (permalink)
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Replace the battery first, the Taurus is very sensitive to battery AMPERAGE not voltage. After that if it's still doing it I suspect a sticking IAC valve.

Troy.
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Old 01-18-2012, 11:26 AM   #3 (permalink)
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+1 batt and iac. also i would do a fuel filter change if you havent done one
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Old 01-18-2012, 11:26 AM   #4 (permalink)
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Originally Posted by 00greenlx View Post
Replace the battery first, the Taurus is very sensitive to battery AMPERAGE not voltage. After that if it's still doing it I suspect a sticking IAC valve.

Troy.
Thats what I thought. Ill swap in the battery from the old car, I know this one is still original.

If it is the IAC, would the one from my 2000 swap over to the '05 FFV?
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Old 01-18-2012, 11:28 AM   #5 (permalink)
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you can look up the part numbers off both and see
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Old 01-18-2012, 11:31 AM   #6 (permalink)
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I just went to advanced auto's website and apparently the parts are different, I would get a new one or clean the old one out with WD40 / Throttle cleaner

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Old 01-18-2012, 12:04 PM   #7 (permalink)
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Quote:
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I just went to advanced auto's website and apparently the parts are different, I would get a new one or clean the old one out with WD40 / Throttle cleaner

Troy.
Gotcha. Well im going to put my money on the battery...its been sitting in a garage for the last 8 months, without being charged and was dead when I got it. I think it may be shot.
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Old 01-20-2012, 02:09 AM   #8 (permalink)
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Ok, little update here. When I went to start it this morning (First start of the day) The battery as noticably weak, but it was below zero and had been sitting over night, so I let it slide. It did its stall thing, but started on the second go. It had to crank a few times and I had to give it some gas to coax it. Let it warm up, and when I went out to leave I heard what I percieved to be a sucking kinda sound from under the hood. It ran fine all day after that, started right up every time.

So...vacuum leak? Would that cause a hard start/stall ONLY on the first start of the day? I would have thought that a vacuum leak would be constant.
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Old 01-20-2012, 07:22 AM   #9 (permalink)
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cold contracts heat expands so it might a crack that shows up when its cold. not to sure if it would cause a stall then start right back up all normal like...
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Old 01-20-2012, 12:38 PM   #10 (permalink)
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PCV elbow / lines on these cars are a common leak, check there first.
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