starting issues
12-04-2007, 11:09 PM
#1
3rd Gear Member
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Join Date: Aug 2007
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Posts: 808
starting issues
hey guys my 89 gt has a starting issue. after it gets warm( the car) when i shut it off and i start it up it has a weak crank, like the batterys going dead. i tested the altenator and the battery and they are good. my dad thinks its the starter, but if i put a jumper pack on itwhen its warm and crank it it starts right up. i need some input
12-05-2007, 01:46 AM
#3
D.R. THE PATHETIC DORK
Join Date: Jun 2007
Location: West Virginia
Posts: 30,863
RE: starting issues
ORIGINAL: kdsmppt
re check ur alt also ur system might be grounding out test the batt with it in the car off that at start than runing.
re check ur alt also ur system might be grounding out test the batt with it in the car off that at start than runing.
.......uhh no........anyway.......my first question would be how was the battery test performed???? did you place it on a Vat machine and give it a load test..usually the test places the battery under a load with 1/2 of it's cold cranking amps programed into the machine formax of 15 sec....mine is digital and does it on it's own after I plug the CCA into the machine........anyway if it tested good and a load test of the alt tested good and you have verified the specific gravity of each cell on the battery via a hydrometer test and a good battery should read1225 to 1250 on each cell with a variance of no more than 25 between each individual cell...if all that checks out...you need to perform a voltage drop test on the power and ground wires and any more than .5 of a volt drop and you got high resistance in a cable and or connection due to corrision.......if you have long tube headers that wrap around the starter..heat soak is the issue and you'll haver a hard time resolving this issue unless you wrap the headers or use a battery like a optima with a lot of cranking amps..that's what I did cause I got long tumes and it cured the issue also I upgraded to a larger alt
12-05-2007, 10:44 AM
#4
3rd Gear Member
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Join Date: Aug 2007
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RE: starting issues
i did a load test with it off with my dads battery tester and then i checked it while the car was running and the charging system was good,i do remember one night leaving my girlfriends i started it and the starter just kept going after the car started and i shut it off and the starter kept going still even with key off and out of the ignition. i know i bought a new starter relay from autozone and its a wells and i know wells sucks[:@]
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