deadbroke
Junior Member
I have a 2006 mega cab 5.7 and have been driving around for years with 3 batteries and a 240 amp alternator no problem. Just recently upgraded to a 370 amp alternator and have been having problems. As soon as I installed it I started getting voltage swings to where it looked like the alternator was off. i had the batteries checked and all 3 were bad.
I get an obd2 reader to check rpms and I think my rpms were too low to ignite the alternator so I disconnected the batteries until I got a new one. It sat like this overnight, in the meantime I changed the throttle body, the pcv, and the air filter. The battery came in and I installed it and then wired it up. I wanted to install the air intake charge sensor so while the battery was hooked up I went to the store and bought the sensor and came back to install it and as I was putting it together I bumped the alternator with my forearm and it burned me. Used a meter and it was hot but I didn't start the truck.
OK so something is wrong I disconnect the external voltage regulator thinking the excitement wire is causing it but it still kept overheating so reconnect the alternator and i start the truck drive it around for a few minutes everything seemed fine even rpms then pull into my driveway and I disconnect the negative to stop it from overheating. I spent the night looking at parasitic draw and then go out the next day and take a reading I was showing 2.1 amps between the batt neg and negative runs. I completely disconnect the alternator thinking bad diodes check again and still nothing. do more research and remove the starter, still showing so I take all the extra wires that I ran from the batt positive and only keep the single original batt positive cable that goes to the tipm so I can rule out my added wiring, same draw. I take out each fuse one by one and don't notice a change, then I take them all out and see my load drop to 1.7-1.8 amps. Now I took all the connectors off except one still got 1.7 ish amps and then rotated to another single plug same thing.
At this point I'm frustrated and I disconnected the hood light and all my radio stuff in the dash and all my wires to amps no change. Then I took my dash off completely along with removing the hvac blower fan, disconnecting the a/c pump connectors, and the throttle body connector, thinking new part new problem, and still no change.
I have had a fuel pump high voltage code for some time now and I think it might be the fuel pump except for i had everything removed with the connectors and I doubt the fuel pump is wired into two different connectors on the back of the tipm.
Some background I have a klein 810 meter I am checking with, I had a 240 mechman alt that I changed to 370 alt with a 6g regulator that I externally controlled so the OE plug was left disconnected, I've had a fuel pump voltage high code on the truck for months, and I have led headlights and taillights. the one headlight isn't working on low beams on the left side unless I turn on high beams and sometimes I have to turn them off then on to get it to light up. I also have a viper alarm wired in with window control but no antenna because the windshield guys damaged it.
I have had a double din head unit with a pac interface module and the alarm for about 9 years. The led lights about 3 or 4 years changed because lights kept going out on taillights. I'm lost on this the last thing I'm thinking is to buy a tipm and swap it in see if it changes anything. does anyone have any ideas?
I get an obd2 reader to check rpms and I think my rpms were too low to ignite the alternator so I disconnected the batteries until I got a new one. It sat like this overnight, in the meantime I changed the throttle body, the pcv, and the air filter. The battery came in and I installed it and then wired it up. I wanted to install the air intake charge sensor so while the battery was hooked up I went to the store and bought the sensor and came back to install it and as I was putting it together I bumped the alternator with my forearm and it burned me. Used a meter and it was hot but I didn't start the truck.
OK so something is wrong I disconnect the external voltage regulator thinking the excitement wire is causing it but it still kept overheating so reconnect the alternator and i start the truck drive it around for a few minutes everything seemed fine even rpms then pull into my driveway and I disconnect the negative to stop it from overheating. I spent the night looking at parasitic draw and then go out the next day and take a reading I was showing 2.1 amps between the batt neg and negative runs. I completely disconnect the alternator thinking bad diodes check again and still nothing. do more research and remove the starter, still showing so I take all the extra wires that I ran from the batt positive and only keep the single original batt positive cable that goes to the tipm so I can rule out my added wiring, same draw. I take out each fuse one by one and don't notice a change, then I take them all out and see my load drop to 1.7-1.8 amps. Now I took all the connectors off except one still got 1.7 ish amps and then rotated to another single plug same thing.
At this point I'm frustrated and I disconnected the hood light and all my radio stuff in the dash and all my wires to amps no change. Then I took my dash off completely along with removing the hvac blower fan, disconnecting the a/c pump connectors, and the throttle body connector, thinking new part new problem, and still no change.
I have had a fuel pump high voltage code for some time now and I think it might be the fuel pump except for i had everything removed with the connectors and I doubt the fuel pump is wired into two different connectors on the back of the tipm.
Some background I have a klein 810 meter I am checking with, I had a 240 mechman alt that I changed to 370 alt with a 6g regulator that I externally controlled so the OE plug was left disconnected, I've had a fuel pump voltage high code on the truck for months, and I have led headlights and taillights. the one headlight isn't working on low beams on the left side unless I turn on high beams and sometimes I have to turn them off then on to get it to light up. I also have a viper alarm wired in with window control but no antenna because the windshield guys damaged it.
I have had a double din head unit with a pac interface module and the alarm for about 9 years. The led lights about 3 or 4 years changed because lights kept going out on taillights. I'm lost on this the last thing I'm thinking is to buy a tipm and swap it in see if it changes anything. does anyone have any ideas?
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