Battery Drainage? - Page 2 - F-Series & SuperDuty Diesel Forums

BIG JOE · 09-20-2011, 01:28 PM

Quote:

Originally Posted by patshea098

I have interstate megatrons.
alternator is fine because when i drive the batteries charge and will stay recharged as i drive constantly its only if the truck sits for like overnight do they drain

where is the AIH solenoid and disconnect? i Might try that....any way to tell if its stuck "on"?

and all connections are nice and clean!

The AIH is on the input (left) side of the Y pipe. The relay for it is just down and to the left, with a heavy gauge wire leading to the AIH, center lug.

With the Key Off.. Connect a Test Light or Volt meter to the center lug. The light/meter.. Should Not indicate any voltage at all.

Joe

Deerjager · 09-20-2011, 01:37 PM

Ignition switch could be a possible culprit.

Stroked68 · 09-20-2011, 03:12 PM

The AIH will drain the batteries really fast, within half hr. Plus at night you will see the heater body glowing red up by the intake tubes.

DOC-MX · 09-21-2011, 02:22 PM

If previous test doesn't work try removing both positive terminals tie one out of way so not to touch anything ,take other terminal and put a voltmeter or test light between battery post & terminal if you get more than 3-4 volts or light is on you have a drain. Make sure everything is off while doing this. If you find voltage or light start pulling fuses 1 by1. When light goes out you have found the circuit that is causing your drain, Good Luck..
Also works to take the test light and substitute a fuse if you have a dead short that keeps blowing fuses

Bdons SD · 09-22-2011, 03:41 PM

Could be a shot in the dark. Do you have keyless entry? If so how's the battery on your key fob? If the key fob battery is almost dead it will send a weak signal and "confuse" the receiver and the relay will drain the battery over night. Found that out the hard way ha ha. I had my batteries tested many times and I was stumped. I finally got around to changed the battery in my key fob and then no more dead battery. I double checked this online and with my truck guy.

Sent from my iThingy using Tapatalk

09-20-2011, 01:37 PM	#12
Deerjager Meister Gewehr Join Date: Aug 2011 Location: Forest City, NC Posts: 190 Thanks: 4 Thanked 20 Times in 20 Posts View Photos By: Deerjager	Ignition switch could be a possible culprit. __________________ 2001 F-250 XLT CC SB 4X4, Auto & 3.73 gears 71K miles, AFE filter, Tuner, stock rims, changed head & turn lights over to '03, Rancho Shocks, MANIK brush guard, Added power driver seat and 3 bar light under tailgate, Muffler deleted, ZooDad Mod. LED lighting in camper shell. "The strongest reason for the people to retain the right to keep and bear arms is, as a last resort, to protect themselves against tyranny in government."-Thomas Jefferson Liberalism is an insult to one's common sense! I was anti-Obama before anti-Obama was cool ! μολων λαβέ NRA Life Member

09-20-2011, 03:12 PM	#13
Stroked68 This is FORD Country Join Date: Apr 2010 Location: Eudora, KS Posts: 945 Thanks: 11 Thanked 64 Times in 63 Posts View Photos By: Stroked68	The AIH will drain the batteries really fast, within half hr. Plus at night you will see the heater body glowing red up by the intake tubes. __________________ 1999 Ford F250 Superduty 4x4 sb ext cab 7.3L DIY Intake-MBRP 4" turbo back smokers kit with dual 6" Miter stacks-Autometer UltraLite Triple pillar gauge KMC HPX SS Crossover Line-Shimmed FPR 74-75psi AIH delete-ZooDad Mod-08 rear diff cover-Harpoon mod-Hutch mod-Recon LED smoked cab lights Bed liner on bottom 1/4 of truck-Fumoto drain valve 275k and counting!

09-21-2011, 02:22 PM	#14
DOC-MX SDD Member Join Date: Oct 2006 Location: Celaya, Gto, MX Posts: 165 Thanks: 8 Thanked 7 Times in 7 Posts	If previous test doesn't work try removing both positive terminals tie one out of way so not to touch anything ,take other terminal and put a voltmeter or test light between battery post & terminal if you get more than 3-4 volts or light is on you have a drain. Make sure everything is off while doing this. If you find voltage or light start pulling fuses 1 by1. When light goes out you have found the circuit that is causing your drain, Good Luck.. Also works to take the test light and substitute a fuse if you have a dead short that keeps blowing fuses __________________ 1996 F250, PSD, XLT, Super Cab, Short Bed, E40D, 2WD, 3.55, 139K. Homemade air intake. DIY exhaust brake. Tymar Hypermax DP 3-3.5" ceramic coated; gutted Kitty; Tymar HPX; GPR switch; transmission cooler; gauges; FPR shim; CCV mod; 4" SS exhaust; SS 5" tip; no cat; RacerX VB; TW 6p chip; 203*;140IDM. NEXT: intercooler; DIY injectors.

09-22-2011, 03:41 PM	#15
Bdons SD SDD Member Join Date: Jan 2011 Location: Auburn, WA Posts: 99 Thanks: 2 Thanked 6 Times in 6 Posts	Could be a shot in the dark. Do you have keyless entry? If so how's the battery on your key fob? If the key fob battery is almost dead it will send a weak signal and "confuse" the receiver and the relay will drain the battery over night. Found that out the hard way ha ha. I had my batteries tested many times and I was stumped. I finally got around to changed the battery in my key fob and then no more dead battery. I double checked this online and with my truck guy. Sent from my iThingy using Tapatalk __________________ 2001 F-350 crew cab 7.3, stock motor, 3 leveling kit, 35 inch mud terrain txrs, Glowshift 3 gauge pillar pod with egt, trans temp, and boost, DP tuner with 60 econo, 80 towing, 120 race, 4" turbo back exhaust with muffler delete, Zoodad mod, sirius stiletto II, Pioneer H/U, Alpine 600w amp, 12 inch Alpine type S shallow mount sub, weatherguard tool box, ..... more to come. 111k.... Just getting warmed up

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