Question about 2004 Chevrolet Silverado 2500HD
Every time it's cold outside my truck won't start. I put new battery and alternator on still won't even turn over sitting all night.
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Posted on Jan 02, 2017
, do a simple test on the charging system...check battery voltage. should be 12v or better. start engine & check volts at idle, no accessories on. volts should read 13.5 -14v. Turn on all accessories(including headlamps on high) volts should drop slightly but should not creep down. Definitely not below 12.5. If voltage drops lower than 12.5, the regulator (in the alternator) is not working. either change regulator or change entire alternator. Alternator drive belt should have sufficient tension so that alternator cannot be turned easily by hand. If it can, check belt tensioner.
Posted on Mar 18, 2009
Not to well versed on the S-10 electrical system but I would take a look at the voltage regulator.
It sounds like there is a malfunction that charges your battery sometimes but shorts out the alternator other times. Try having it tested or replace it
WD-40 will not do the trick for cleaning your terminals. WD-40 was developed during the 2nd WW to combat moisture in radio equipment in the South Pacific. WD stands for water displacement and the 40 is for formula #40. To clean the terminals you must disconnect them and use an abrasive such as emery cloth to remove the corrosion. They should be brite and shiny when you put them back together. I always cote mine wit dei-electric grease before re-assembly
Posted on Nov 21, 2009
The next time it does not start have someone crank it over while you tap on the mass air flow sensor,if starts then remove the mass air flow sensor and clean the small wires inside of it using a non-chlronated brake cleaner let dry 10 minutes then re-install.
Posted on Jun 25, 2012
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