chef_tim Posted April 6, 2004 Share Posted April 6, 2004 I put the Carter fuel pump on today, it fired up and runs good, I did have to put on a regulator as it was running 5psi. Now the weird part. I wired it in to the existing Pump harnes, when I turn on the turn signel you can hear the pump draw down then back and then down with every blink. Do you suppose the new pump requires that much more power to run or what????? Please try and remember that I am an electrical 3rd grader so keep explanations simple with lots of detail:rolleyes: . I'm also thinking that my after market fans maybe doing the same thing, I just ran them to the existing wireing also. Thanks for any and all help. Tim Quote Link to comment Share on other sites More sharing options...
mcbrat Posted April 6, 2004 Share Posted April 6, 2004 Tim, which vehicle? I'm thinking of giving a seminar at the midwest meet on all the things electrical I've learned along the way I'll have a aftermarket pump on, as well as some other goodies Quote Link to comment Share on other sites More sharing options...
GeneralDisorder Posted April 6, 2004 Share Posted April 6, 2004 Sounds like you could use a bigger alternator. GD Quote Link to comment Share on other sites More sharing options...
chef_tim Posted April 6, 2004 Author Share Posted April 6, 2004 I'm running a 90 amp XT6 alt on this thing. Sounds like a great idea Mick, I know I can use all the electrical help I can get. Tim Quote Link to comment Share on other sites More sharing options...
Partsman Posted April 6, 2004 Share Posted April 6, 2004 Probably only happens at idle, right? I know that my electrical system pulses with my signals at idle (headlights, voltmeter). Our alternators don't put out much if anything at idle - need a certain rpm to excite, I think. Unless you spend an inordinate amount of time at idle, should be no worries (unless it's happening at higher RPM's, then you've got a problem). Quote Link to comment Share on other sites More sharing options...
Cougar Posted April 6, 2004 Share Posted April 6, 2004 If you don't have a digital voltmeter already Tim you should think about getting one. They are real handy to have around for a lot of things and you can get one for around $30 dollars. Electrons are fun to chase once you understand them a little. With a meter you can check your battery voltage and the alternator output. You may not be getting the full output of the alternator to the battery due to a bad connection and this would cause a voltage drop to the battery. You may just have a loose fanbelt also. Then again, this may just be a normal situation but it sounds to me the battery is a little low on charge. Quote Link to comment Share on other sites More sharing options...
subiemech85 Posted April 6, 2004 Share Posted April 6, 2004 check your grounds and wiring and make sure that the correct bulbs are installed Quote Link to comment Share on other sites More sharing options...
archemitis Posted April 6, 2004 Share Posted April 6, 2004 my 50 gpm/90psi efi pump, doesnt do that, and i got the stock alternator. prolly a dumb question, but do you have a small battery or something? got a gauge on that thing, to check if pressure is droping? Quote Link to comment Share on other sites More sharing options...
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