Question about 2002 Ford F350 Super Duty DRW Reg. Cab

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I have a 2002 f350. It will not start,we have changed the glow plugs,alternator and it is now worse. Now it buzzes when trying to start and there is a rattle noise under the hood somewhere by the battery on the passenger side. We have tried to jump start it from our other truck with no sucess.Can anyone help us figure out the problem?

Posted by Kathy Higgins on

  • Kathy Higgins Mar 15, 2011

    Took the batteries out and charged them. then took them and had them tested. They tested good. Checked the cables and see no corrosion.Matter of fact, that was the first thing we did, thinking that was all it was. But the problem continued to get worse. We do have an evolution chip system that came with the truck when we bought it. We are wondering if that is draining the battery? Not sure, we just had it towed to a shop. Tired of trying to figure this out. Thank you for your help. We will let you know what they found. Hopefully it will not cost alot to diagnose... :/

  • Kathy Higgins Mar 21, 2011

    I just wanted to update on my truck problem. We took it to a shop and he discovered it was the glow plug relay. Which I never knew there was a relay. Also we have a perfomance chip and for some reason it was not shutting down after we turned the truck off so that was the reason for the battery drain. The glow plug relay was also draining it because it was not heating the glow plugs sufficiently and finally quit working altogether. Thank you for your help. btw, the relay cost 112.00 for the part and to put it in the bill came to 398.92 ouch......well worth the money to get the problem over with.



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Sounds like the battery cables have corrosion inside the insulation (causing high resistance ) but have the Batteries tested FIRST The batteries must be checked and fully charged or a bad cell in 1 battery will drain the other battery causing low voltage and amperage . They have to be checked individually ! This system has dual batteries in series for 12 volts inturn requires high amperage to operate the glow plugs , controller , computer . Follow the positive cable from the passenger side to the drivers side look for corrosion at the battery terminials these models have the circular squeeze type clamps unless replaced ( you can find this by feeling the battery cables after trying to crank the engine becareful the high resistance areas will be warm or very hot ) the most likely places are right at the battery terminals if you are'nt sure about the battery cables,, simply peel the insulation back from the cable ends and inspect the the inner wires .

Hope this helps ,

Posted on Mar 15, 2011


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