97 f350 problem (Please need Help) - PowerStrokeNation : Ford Powerstroke Diesel Forum
 
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post #1 of 6 (permalink) Old 11-04-2012, 02:46 AM Thread Starter
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97 f350 problem (Please need Help)

I have a 97 F350 powerstroke. Today it would not start because of weak batterys. Put a charger on it for 30 mins and started it. About 20 Mins later abs light is on and volt meter and speedo are not working. Then speedo starts working. Then all guages quit speedo, tac, ect. Then overdrive light starts flashing. then auto transmission starts acting up. Made it home and it died in front of the house. ofcourse batterys were dead. And Relay 2 under hood was clicking. Im assuming i toasted the alternator with the charger but not sure. Any suggestions where to start looking for the problem would be great. thanks
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post #2 of 6 (permalink) Old 11-04-2012, 05:39 AM
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Re: 97 f350 problem (Please need Help)

First off welcome . Second get your batteries checked and check them one at a time disconnecting the batteries .

96 cclb f350.
idm mod,
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post #3 of 6 (permalink) Old 11-05-2012, 02:16 AM
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Re: 97 f350 problem (Please need Help)

if you get it running again, after testing batteries, check voltage output of alternator, it should be around 13.7v-14.4v(somewhere in that range, +/- some)... if its a little lower, like around 10.5v-12v, try disconnecting 1 battery, and see if your voltage comes up. If it does come up, leave it and let it charge the 1 battery 1st. you could charge the other with an ac charger at the same time. ive had similar issue before, but... I drained mine trying to start in cold weather for a looooong time one morning (glow plug relay issue). Once i assisted the alternater in getting the batteries up to about 12.5v-13v, the alternater was able to pickup the load of both batteries, and maintain proper voltage. Its been a month now and no issues since. Mine maintaines about 14.3-14.4v now..... P.S. i originally drained mine to about 9v. Let us know what you find.

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post #4 of 6 (permalink) Old 11-05-2012, 04:41 AM
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Re: 97 f350 problem (Please need Help)

Quote:
Originally Posted by kayton View Post
I have a 97 F350 powerstroke. Today it would not start because of weak batterys. Put a charger on it for 30 mins and started it. About 20 Mins later abs light is on and volt meter and speedo are not working. Then speedo starts working. Then all guages quit speedo, tac, ect. Then overdrive light starts flashing. then auto transmission starts acting up. Made it home and it died in front of the house. ofcourse batterys were dead. And Relay 2 under hood was clicking. Im assuming i toasted the alternator with the charger but not sure. Any suggestions where to start looking for the problem would be great. thanks
The alternator will be overworked from bad batteries. How old are the batteries??
You need to have 12v for all the relays to work. Replace batteries & alternator. Check and make sure all connections are secure. Check all your fuses. Get the charging system tested. Good luck..

1997 F350 4X4 XLT CREW CAB
7.3L POWERSTOKE DIESEL 390,000
T/S 6 POS CHIP, STAGE 1'S, 17* HPOP
6637 AIR INTAKE/NO CAT
4R100 STAGE 3- 12" TRIPLE DISC BILLET TORQ, BILLET INPUT, RED ALTO'S, TUGGER KIT, CUSTOM VALVE BODY, DERALE TURBO PAN.
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post #5 of 6 (permalink) Old 11-05-2012, 06:37 AM
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Re: 97 f350 problem (Please need Help)

The alternator is not designed to charge dead batteries. It is designed to maintain the batteries from whatever load is placed on them normally. It sounds like you have one or more batteries that is bad which put too much strain on the alternator and killed it. As stated above, replace both batteries and the alternator and you should be good to go.

97 F-350 XLT CC DRW 4X4 PSD, 285/75-16 Custom bumpers, Gauges-boost/egt/trans, Swamps IDM, 3.5"dp- 4" exh., 3" Body lift, ES bushings/mounts, Built trans, billet conv, B&M pan, Hayden cooler, Adrenaline, stage 2's, IC, H2E, E-fuel
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post #6 of 6 (permalink) Old 11-06-2012, 12:08 AM
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Re: 97 f350 problem (Please need Help)

What Speed demon and others state is true....but Alternators have a designed output...and they will make that output constantly till they wear out....So If I was you ...again as was mentioned above , I would get 2 New Batteries , preferably same CCA and blah blah blah....
Then if you need an Alt ...buy one...Thats it ....for 4-5 YEARS Anyway .....
Best wishes either way .....

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