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mavsfan0434
New User Jan?15,?2013,?12:09?PM Post #1 of 8 (121 views)
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| So, I've come to my capabilities end, any help would be great. I have replaced the battery, starter(2 years ago) and battery cables and connections to the terminals. I hope to fix this myself with my fathers help, so any ideas would be great. The problem is this...in the mornings, just so happens to be the last 2-3 months when it's cold, the car will not start. It turns over good, will crank pretty much indefinately. No clicking, no lights dimming, but when the last battery was tested it showed it was only charged to 75% so I was wondering alternator? Fuel pump has also ran accross my mind, but so far, the 4-5 times this has happened, if you hook up the jumper cables it will start after 2-3 minutes. But is that start coincidence or truly "spark" related and not fuel related, simply for the fact before jumping we have tried 4-5 times to start it with no avail. If you need anymore info please let me know. Thanks in advance for any help! Also if it is the fuel pump, it is located in the gas tank? Is there a panel under the seat to get to the pump or does the tank have to be dropped?
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Tom?Greenleaf
Ultimate Carjunky / Moderator
 Jan?15,?2013,?12:33?PM Post #2 of 8 (114 views)
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| Not sure how you came up with battery is only 75%. You would charge it fully then load test it watching voltage drop too. It works better with a jump suggesting voltage while cranking might be inadequate for proper fuel pressure now especially when cold. Pressure testing fuel while it's troublesome would be informative while watching for excessive voltage drop from cranking. A maye that, that battery just can't cut it and they do not have their full power when cold to begin with which is why you see them rated with a CCA (cold cranking amps) which I think means just 32F. We know it can get tons colder. Not so fast on blaming fuel pump till you see evidence at the time it is happening with the conditions too. I do think tank comes out to replace on most actually not nice enough to give you access from inside - some do - this one IDK for sure, T |
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mavsfan0434
New User Jan?15,?2013,?12:38?PM Post #3 of 8 (110 views)
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| So testing the fuel pressure might be the next step? Not sure I know how to do that. Something else I just remembered, and it might be a totally separate issue, but the other day when I got home and put the car in park, the radio shut off while changing gears from D to P. Could the 2 be related?
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Tom?Greenleaf
Ultimate Carjunky / Moderator
Jan?15,?2013,?12:46?PM Post #4 of 8 (104 views)
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| Fuel pressure is taken usually at a port on fuel rail. Special tool for that. Key on, engine off and should hold there with the key back off. Then watch it while cranking and again while running when and if. Radio thing is some kind of problem IMO and may be part of draining the battery or something but not normal and no clue right now if that could be related without watching plain vitals of starting first I guess then worry about why the radio can do that. I do not think that is a feature for this car in any way, T PS: Of line for a while now..... |
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mavsfan0434
New User Jan?15,?2013,?1:02?PM Post #5 of 8 (82 views)
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| A friend of my dad's suggested this to test the fuel pump... Next time it won't start, shoot a little ether into the intake(butterfly is what he called it) If it starts then, you know it is probably the fuel pump, but if that doesn't help then it's most likely something else. Would anyone else reccommend this?
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Tom?Greenleaf
Ultimate Carjunky / Moderator
Jan?15,?2013,?2:44?PM Post #6 of 8 (66 views)
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| Let's call it "fuel delivery" not pin pointing why it isn't quite yet. In spraying starting fluid in throttle body makes it start or a good stumble when nothing happened before trying that you have a fuel issue. It doesn't pin point the pump just means you can focus on fuel and not other mandatory things for it to run. Fuel pressure or lack of enough is just one reason. It might be caused by something else still. You need to know the pressure or you may just replace the pump to find out that wasn't the problem! That would cost tons more than pin pointing the problem if wrong or getting a gauge to test it. If you don't have access to one see if a local parts outlet rents them. Some one type of car specific ones only cost about $40 bucks to own, T |
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| Source: http://autoforums.carjunky.com/Automotive_Repair_C1/General_Discussions_F5/2000_Ford_Taurus_Starting_Issue_P135311/
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