Battery Drain Injection Drive Module - Ford Powerstroke Diesel Forum
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post #1 of 1 Old 11-05-2012, 09:29 AM Thread Starter Rookie
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Battery Drain Injection Drive Module

I have a 2000 7.3 Lariat, Tekonsha brake controller, 4 gauges, DP-Tuner chip, Banks 4" exhaust, turbo impeller swap, big air filter, AIH delete and a monster Coleman power inverter mounted in the back seat with 2/0 welding wire powering it and a Viper alarm with remote start

I have a draw on my batteries that's slowly draining them to the point of causing hard starts in the morning. I just remembered that I upgraded the glow plug relay to a white rogers the other day and recently replaced the ignition switch, starter relay and neutral safety switch for a no crank no start (it was the neutral safety switch- but now my truck won't crank in neutral). Anyway, I have a customer who owns a stereo shop and he helped me isolate the circuits that are causing the problem. They are:

Location Fuse Purpose Draw
28 30amp Trailer Brake Controller 0.25 amps
27 30amp Injection Drive Module 1.72 amps
21 50amp Ignition Switch B1 & B3 1.07 amps (with brake controller plugged in 0.00 without brake controller)
20 50amp Ignition Switch B4 & B5 0.06 amps

It is possible that the decimal is in the wrong place- like I said, I'm electronically retarded.

1) So, the largest draw is with the IDM. Does this mean the IDM is failing?
2) Why does the brake controller cause a draw on the ignition circuit and not the brake controller circuit. It is plugged into the factory spot on the harness.

The alarm has been installed for over a year with no noticeable problems. The batteries were two years old "Gold" from AutoZone- supposedly the best ones they carry with 850 cca and 1000 something else - they were operating at 89% and 75% capacity as per the AutoZone tester. I warrantied them out and now have brand new batteries in the truck.

What I noticed to bring this to my attention- last week it was getting kind of cold; mid-20's to mid 30's. Two mornings in a row I had buttloads of white smoke out of the exhaust but no start. The remote start had to try two or three times to get the truck to fire; hence, the GPR replacement. One thing led to another and here I am.

Thanks in advance for any help guys.

2000 F250, Automatic, 4" Banks Monster exhaust with power elbow, EBPV delete, AIH Delete, Pyro, boost and Trans gauges, DP tuner, 3.73 Limited Slip, LT275/75R18, Big A55 air filter, 5000 watt power inverter.

Last edited by Mustangman6799; 11-05-2012 at 11:09 PM.
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