No Cranking After Charging Batteries - Diesel Forum - TheDieselStop.com
'99 & up 7.3L Power Stroke Engine and Drivetrain Discussion of the '99 & up 7.3L Power Stroke diesel engine and drivetrain in the 1999-Up Super Duty trucks and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 7.3L Power Stroke engine.

 
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post #1 of 7 (permalink) Old 09-21-2019, 11:37 AM Thread Starter
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No Cranking After Charging Batteries

I hope someone can help. I have a '99 F350 later 7.3 with about 185,000 miles on it. It was used to drive to and from work (20 miles a day). I retired 2 years ago and it hasn't been run regularly. I use it about once a week. About 3 months ago I noticed it was starting as if the batteries were low. I figured the batteries (5 years old) might be losing power from sitting unused because once I ran the truck it would start again as if they were fully charged with no problem. Yesterday after not running the truck for about 10 days, I went to start the truck and it would crank as if the batteries were very low but would not start. I put my charger on it and set it to 40 amps starting mode and the engine started like normal. I turned off the engine, removed the key and left the charger on it for about two hours to bring the batteries back up. When I went to start, all of my dash lights and the WTS lights functioned normally and I could hear the glow plug relay click like normal. When I turned to crank, there was one click from the passenger side near the firewall and nothing else. Total dead silence. There were no accidents/shorts when connecting or removing the charger. DTC codes P1670 and P0541 show on monitor. I have checked the fuses related to starting in both boxes and have found nothing. I have tried starting in neutral, park and while jiggling the automatic shift all with the same result. I removed and again cleaned the battery terminals. The batteries show 12.6 and 12.4 and when the key is turned to crank they only drop to about 11.9 to 12.2. I'm baffled. It started like a champ and after charging nothing. The funny part of this is I was planning on trading in or selling the truck this week and I think the truck heard me.
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post #2 of 7 (permalink) Old 09-21-2019, 12:07 PM
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Start with checking the connections at the starter along with the wiring going to the starter. Along with the ground wires to the block.

Your battery voltage is showing that there is no draw on the batteries other than the glow plugs.

96 F250 PS XLT 4X4 long box, 5sp,4.10, manual hubs,pyro+boost guages, Dark Toumaline, add a leaf, Dale's TYMAR, and HX hose, downpipe, coolant filter, Luk clutch
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post #3 of 7 (permalink) Old 09-21-2019, 12:26 PM
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Out of curiousity, what Amp did you charge the batteries at?

Did you hook the 40-Amp up the second time you tried starting the truck (after the full charge)?

Odds are your 5-year old batteries are pretty worn out. The only downside to replacing them before sale is the warranty does not transfer to new owner.


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2002 F-250 4x4 CC SB 7.3 PSD w/4R100. 182,000 miles.
NOS Black CPS. ScanGauge-II, AIC, Bilstein 5100, Stancor GPR, Marinco Mod, B&W Turnover Ball, Michelin Defender LTX


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2002 F-250 4x4 SC LB 7.3 PSD w/ZF-6. 177,000 miles.
NOS Black CPS. ScanGauge-II. Bilstein 5100. Stancor GPR. Walker BTM. Noco Mod. Michelin Defender LTX 285/75/16.

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2000 F-250 4x4 SC SB 7.3 PSD w/4R100. 164,000 miles.
NOS Black CPS. Rebuilt Fuel bowl w/gold spring, 6.0 Cooler, Walker BTM, Stancor GPR, Michelin LTX M&S2.

Last edited by ArcticDriver; 09-21-2019 at 02:04 PM.
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post #4 of 7 (permalink) Old 09-21-2019, 01:29 PM Thread Starter
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I won't be able to work on the truck until Monday, but I will check the grounds.
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post #5 of 7 (permalink) Old 09-21-2019, 01:39 PM Thread Starter
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I made the mistake of leaving the charger still set at 40 amps when it was charging. The batteries were still showing 12+ when disconnected from the truck after charging. I reconnected the batteries to the truck and then connected the charger and tried cranking at the 40 amp setting but the result was the same, just the one click from the passenger firewall side (starter relay?)
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post #6 of 7 (permalink) Old 09-21-2019, 02:41 PM
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You most likely have a bad connection.
DENNY

Early 1999 F350 AUTO 4x4 CC LB DRW 4.10 6.0 trans cooler, Front hitch, 2,000 hubs/ brakes, Bilstein shocks/steering stabilizer, Diesel site coolant filter 203 thermostat, EBV delete, new O-rings, new Oil cooler, RIFF RAFF FRX, Glow plug led, Pillar gauges, Lighted cupholder, Painless wiring fuze block, Harpoon/hutch mods, Removed axle blocks. Air bags, 5 wheel hitch, In bed 7 pin plug. Spare tire key delete. KLHANSEN on speed dial. 75,000 as of May 2019
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post #7 of 7 (permalink) Old 09-28-2019, 05:23 PM
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I had the same problem, bought 2 new batteries and now it's good.
I bought the AGM type batteries Duracell from Sams Club, 170.00 each

2000 E350-Super Duty Ext. Mobile LivingRoom-7.3LPSD
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