Question about 1996 Isuzu Rodeo
I have a 1997 Isuzu Rodeo and the alternater is good but it is not fully charging the battery it is only charging at 50% the battery last for about a week and i have to charge it with a battery charger i have tried everything i know but i can't fix the problem i have changed the alternater and looked at the wires and everything looks good help!
1986-1995 Amigo, P'up, Rodeo, Trooper 2.3L; 2.6L
Many 1986-1995 Isuzu trucks with the 2.3L and 2.6L engine develop a low battery charge condition caused by weak alternator output. The problem is not necessarily a bad alternator; it is often been found to be the result of damage to the alternator wiring harness. The harness passes through a metal retainer near the back of the alternator, and over time, the retainer can chafe through the harness, grounding it out. Before replacing the alternator, inspect the harness and repair or replace it if required. Also check all connectors and cables for signs of corrosion. High-resistance connections can easily prevent the alternator from maintaining a full charge in the battery.
Posted on Feb 21, 2010
How are we determining the alternator is charging correctly? The charge rate at the battery posts should be between 13.6 to 14.2 v If lower than 13.2v the alternater is charging too heavy and if above 14.2v the alternater is charging low. Keep in mind the higher the voltage the lower the amperage. With an amp meter hooked up between the negative post and the cable you can chk the amps being charged. a voltmeter between the positive post and its cable can show you any current draw present with everything turned off, make sure doors are close and key is out of ignition. Good Luck
Posted on May 19, 2009
Aftermarket alts. always gave problems and we stopped using them in our shop. The ones from Isuzu would leave and never give any problem.
Posted on Jan 06, 2009
If alt was replaced with reman this may be your problem.You may have a bad batt and it does not matter if batt is new.have seen many new batts with cell problems.
Posted on Oct 21, 2008
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Posted on Jan 02, 2017
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