Question about 1990 Ford Bronco

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I have a 1990 ford bronco with the 351 that wont charge we got the battery and the alternator tested and both are good we put a load test on the battery and it said we were only get15 amps to battery and with a load on the battery the amps didnt change

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Change voltage regulator

Posted on Jan 25, 2012

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You might need a new battery the good ones are the big 800 amps at cold cranking type

Posted on Jun 03, 2010

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1 Answer

Truck will not start after replacing alternator


Sounds like your battery is suspect, have a load test done on your battery at any walmart, also a bad starter will act the same way sometimes, when you have a good battery and a good alternator, also make sure ALL your battery cables and posts are not corroded.

Nov 18, 2013 | Ford F-150 Cars & Trucks

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1995 FORD Bronco wont charge battery&Alternator


need to check all wiring for breaks bad connections and blown fuseable links..still get the thing tested.free at autozone or advance..may have bad main fuse in system..

Feb 09, 2013 | Cars & Trucks

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Hey i have a 1993 ford bronco four wheel drive with the 5.8 engine. I have had the alternator checked and its good and the battery is good but it will not charge. Its running on just the battery, Do you...


You need to check your alternator circuits. If the alternator itself tests good (I am assuming it was removed from the vehicle and taken to a parts store for testing) then the only thing left are the alternator circuits themselves. The large BLACK/ORANGE wire needs to have direct connection to the battery. This connection needs to be clean and tight with little or no resistance....This needs to be checked with an ohm-meter to verify. The rest of the circuits depend on what your vehicle is equipped with. 1993 Ford Broncos were originally equipped with two different charging systems. One had an integral regulator (regulator built into the alternator) and an external regulator. (voltage regulator mounted on the fender, separate from the alternator.) If you have the external regulator, that is what I would suspect as the cause of your problem. If you have the internal regulator, then I would check for battery voltage on the two BLACK/ORANGE wires and the YELLOW/WHITE wire at all times, and the LIGHT GREEN/RED wire should have battery voltage only with the key in the ON position.

Apr 09, 2011 | 1993 Ford Bronco

2 Answers

I have a 1990 f150 lariat my alternator wont keep my truck running I replaced the alternator today along with alternator harness. I got the alternator tested and its good, the battery is good, and soliniod...


https://s11.postimg.org/crrcun103/generator.jpg

Click on the link.
The diagram shows generator with internal voltage regulator and with external voltage regulator, at the moment, I don't know which one you have?
The bat terminal at the generator should be hot even with the key off, is it, use a test light. If no voltage either the fusible link is faulty or the wiring circuit to battery +. You can see fusible links in diagram.
Could be other issues, the generator probably needs excite voltage or it won't work. The excite voltage comes from charge indicator circuit. Does the charge lamp on the dash work?

Jun 29, 2017 | 1990 Ford F150

3 Answers

Battery wont charge changed alternator and battery still wont charge


fit a new reconditioned alternator and not one from a junkyard

Mar 30, 2010 | 1992 Ford F150 SuperCab

1 Answer

Charging system


You Can Test An Alternator By Starting The Vehicle And Then Unhooking The Battery. If The Vehicle Stalls Then The Alternator Needs Replacement. A Second Battery Would Need A Source Of Charge So Unless You Want To Fork Out A Lot Of Money No.

Jan 04, 2009 | 1988 Ford Bronco

1 Answer

Charging system


change your battery cables and check all wires on the alternator for loose connections, expecially the grounds.

Oct 02, 2008 | 2000 Ford Explorer

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