can some one tell me how to trouble shoot the starter on my 90 cummins?

 

What is it you are looking for? Is there a problem of some kind you're trying to fix? Rn'r'ing a starter could take up a whole page with one post so narrowing it down will help us help you.

 

thanks, so at 1st i thought i had a charging problem, so i had my alternator checked, new belt, and voltage regulator.... then i found out that i had a power drain so i pulled fuses til it went away, ended up being the interior lighting fuse(not sure if its relevant or just coincidence).. after a few weeks i realized it was still having problems, if the truck has sat over an hour when i turn the key to start it, it will start turning over but not fire, then it stops and clicks and buzzes and sounds like something is not making a connection, but usually if i keep the key turned it'll start turning over the longer i keep the key turned the faster the engine turns over and it eventually fires, but sometimes it kills the battery 1st.. and after its charged up again i let it sit a few days and i check the battery with a multimeter it seems fine... iv looked over the wiring for a short, replaced the starter relay, and even but in a new ignition switch. but when it does get up and running it runs strong and hard just it always had, if its not sat over an hour itll usually start up without a problem. also if i jump it with another car itll usually start after a second or two...but still turns and clicks 1st... this is the 1st time this truck has had problems and has never had any major work done before.. besides a new alternator 5 yrs ago and lots of voltage regulators(when it was really a growing battery drain)

 

load test the battery and also check the starter and see what kind of load it is pulling your going to have to take it somewhere that has the tester to do so. most alternator shop and do that test for you. also need to find the drain on the battery.

 

thanks, i did let advance auto check it after i got a new interstate battery about a month ago and they said everything was fine. but how do i test the battery. i tried using jumper cables to see if the starter turned but it didnt do anything, just sparked... what all is on the interior lighting fuse? i checked all the interior lights and the cargo light and the unplugged the hood light and still cant find it. with the fuse in it had a 10v drain. fuse out its like .0135

 

if your talking about the same fuse for the dome light. Factory service manual says (radio and clock memory, power mirrors, glove box lamp, dome lamp, reading lamp, map lamp, cargo lamp, ignition switch lamp, underhood lamp). when they checked your starter they checked to see what kind of load it was pulling and was it less then 550 amps

 

okay i found the piece of paper, under starter test it says cranking normal, volatage9.64 volts... amps:0.0 and time 562ms

also under charging system test says no load 15.1v and loaded 15.01v


anyways for awhile the radio has been having static in the speakers and switching back and forth between the pass and driver side and also the display doesnt always work...

 

i have the EXACT same problem and i f***ing hate it!! these 1st gen wiring set ups suck. i need to figure out what it is before my axe ends up through every panel on the dam truck!!

 

I wouldn't trust that diagnosis. They may be right, but I'd be taking it to a shop that specialises in electrical problems. Or pay some $$$, for an inductive amp meter. They're not expensive, a Snap-On set is like $90.

Load testing the battery can be done at a parts store. Unless you want to buy a carbon pile I'd just take it to whoever and get them do it for free.

 

well i guess i should probably recharge battery first