Question about 2001 Ford Taurus

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Cranks sometimes and sometimes not

New battery and alt starts sometimes and then not.fuses good

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  • s60six May 11, 2010

    does the engine turn over but no start. or do you get nothing at all when it does this?



  • John Jon May 11, 2010

    engine light on?

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Pls. fix ur starter, its not ur alt or ur battery.

Posted on Jan 16, 2009

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1 Answer

1999 3.2l. Why are battery and brake lights on?


was not on before the new alt,? is alt new or used.?
or came on only after the new ALT?????????
my guess, is 2 failures.! (one ignored and 2nd grew)
on with engine running, guess yes.
Good question and is same answer on all cars.
1: engine rpm too low, what is yours (below 80 rpm)
2: fan belt slips. bad tension pulley (weak and old???)
3: Alt bad, or its wires bad.
4: brake level low, (@MC) or hand brake switch stuck on, or other brake failures. a plenty, scan the PCM and ABS if you have ABS.
id not drive it with the brake lamp on (Savvy?)
the battery light is really the ALT charge lamp.
it glows anytime the Charge system can not charge the battery
if you drive far like that, the engine will stall and not crank.

5: the horn fuse power the alternator, so check the horn fuse
10amp , key on, 12vdc on both sides of fuse is needed/
fyi: the meter fuse runs the charge lamp, if said lamp is dead bingo.
6: fact 2, the PCM does NOT run the Alternator on the 3.2L .
7: alternator case not grounded right.
8: battery is bad, causing alternator to drop off line
9: battery cables bad, at the 4ends or they are bad.
10: the plug on the rear of alt is bad or its wires or pins rusty.


brakes:
the brake lamp has 3 inputs ("OR" logic) master cylinder level low.
the hand brake lever and the EBCM (electronic brake control module)
a technician unplugs each to see what causes the error.
if you unplug mC wire and hand brake wire
then the EBCM is UNHAPPY, scan it.

Jul 31, 2015 | Isuzu Rodeo Cars & Trucks

2 Answers

I just put a new alternator on my 97 isuzu rodeo but it still draining the battery and stalling how do I reset the computer so it picks up the new alternator of is it something else


i bet you skipped step 1, in the book, FSM and all car repair books in print, 100 years now.
disconnect the battery neg lug first.!
oops, you blew the main fuses. (or blew up the new alt... sad huh)
cb 7 or cb3 fuses blown? CB means cab fuse.(dash box)
drains driving, i bet.
right.?
and the battery is not 13.3v to 15vdc running (good range)
bet 2:
and engine RPM is 800RPM or more at all times, right?
not 400.
the belt is not slipping or missing.
the connections are all tight
the battery cable lugs, are all clean, x4 ends. right?

no engine stated, size and number of cylinders.
as you may not know, diffr, engines sometimes have diffr ALT.
usa answer (for just 2 engines only , usa)
2.6L and 3.2 liter both have PCM generator gain control pin
and the PCM can be bad.
is the charge light glowing running, ?????

here is the proof the PCM does run the reg inside ALT.
called gen gain line.

25782645-zy5i2xuw3mfjw4tca3plar50-1-0.jpg you didnt blow EB17 main fuse that kills all .
there is the CB fuse , for alt.


25782645-zy5i2xuw3mfjw4tca3plar50-1-1.jpg

Jul 13, 2015 | Isuzu Cars & Trucks

2 Answers

Car won't crank over.


Are you sure you have all wires on Starter and Alt, Have you checked fuses for fuel pump, check starter relay, Reason for changing Starter and Alt??? DID YOU DISCONNECT BATTERY BEFORE YOU STARTED REPLACING PARTS???

Dec 13, 2013 | 2005 Ford F-150

1 Answer

84 camaro good battery and alt so the part store says but after one start battery is dead have all new wires ?


Battery is only used to start engine.
after charging battery, start car. remove Negative cable, if car dies, wiring to alternator is faulty.

if continues to run, shut off car and all accessories. install ammeter between Neg. cable and battery, if it shows a draw, pull fuses one by one to find circuit with draw while car is off.

Feb 19, 2013 | 1984 Chevrolet Camaro

2 Answers

My alternator wont charge my battery. both are new, new fuses, and wires and cables


Hi Paula, As both the battery and alternator have been replaced, there are only few remaining reasons why the alternator will not charge. Make sure of the socket connection being fitted correctly and that there is a good connection on each of the connectors inside the connector. Check and make sure the earth earth connection between the battery and the engine is correct and that both ends are tightened correctly. Inspect the 'Alt' fuse in the fuse holder and also the fusible link. Also make sure that the belt is tight. Regards John

Jan 27, 2013 | 1990 Toyota Camry

1 Answer

1994 E150 van ford no alt power have changed the alt. charged the batt


There is a fuse or fuseable link between the alt and battery, and the alt gets a signal from the key to activate the voltage regulator.
I would check for batt voltage at the alternator and you may need a wiring diagram to check for key voltage.

Jul 02, 2012 | Ford Cars & Trucks

1 Answer

I swapt out my battery for a new one, it cranks but doesnt turn on? all the lights work and electronics but doesnt turn on


Try checking your fuses. There is one for the main engine or for alternator. Usually it is listed as main eng./alt. Sometimes when there is an issue with your battery this fuse will blow which causes the symptoms you describe. Besides that maybe you might be out of gas???

Dec 17, 2009 | 2004 Toyota RAV4

1 Answer

I PUT A NEW ALTERNATOR AND BATTERY IN A 1999 FROD


check for a blown fuse,sometimes if the battery cable is connected when changing an alternator it overloads the fuse,also check for power at any fusible links

Oct 21, 2009 | 1999 Ford Expedition

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