Question about 1990 Isuzu Trooper

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The voltage in de alternator is 13.5 with engine in ralenti. At battery is 12,5 what is the problem? Trooper Isuzu 1990. Please i need de wiring diagram plase.

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Having a charging voltage of 13.5 - 14.1 volts is a normal range, your alternator is working properly.

Posted on Nov 20, 2009


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1 Answer

Code 12 usuzu trooper

code 12 is the hand shake code on most troopers. will be repeated three times. then each code will repeat its self three times. when all codes are flashed it will return to the 12 code. reference 1990 Isuzu trooper

Feb 05, 2014 | 1990 Isuzu Trooper

1 Answer

Have a 1997 Isuzu Trooper. The battery will not charge, has new alternator on it. Any ideas??

Check the large cable on the alternator to make sure it has 12 volts on it with the engine not running,if it does not,then this is the problem,running a new one to the positive side of the battery to this terminal on the alternator will solve the problem.

Aug 16, 2010 | 1997 Isuzu Trooper

2 Answers

I replaced the battery in January for my Isuzu

In today vehicle there are many electronic device that still draw power from the battery.

Car radio memory on station pre-set
Car radio clock
Computer/ECU to save driving parameters
Car alarm + sensors
Power seat menory

To prevent problem,I will start the engine for 5 minutes once a week.

If are in an enclose area and has access to a power outlet then it's a good idea to connect a float battery charger to keep the battery is optimal condition.

Here is a sample of float charger / battery tender.

It's on sale for $7.99 now or you can but better quality one at your local auto part store for $30+

Link to Harbor Freight page HERE

It's a good idea to check for worn belt and weak alternator.

A belt with 60,000 or 5 years should be replace.

Check the voltage at the battery terminal after the engine is warm up for 5 minutes. The voltage should be above 13.8V

Auto supply store may provide more in-depth battery and alternator testing for free.

Please email me if you have any question.

Jul 12, 2010 | 2002 Isuzu Trooper

1 Answer

I have a 1990 dodge caravan that will not charge

use a volt meter and check the voltage with the engine off. should be 12 volts then check again with engine running it should be 13 to 15 volts if no then the pcm is at fault. the voltage regulator is inside the computer control and you will need to have it checked out at a dealership. if bad will have to replace the computer on van to correct the charging system. hope this will help!!!

Apr 15, 2010 | 1991 Dodge Caravan

1 Answer

Lights on battery also brake light stay on

Sounds like an alternator failure. Check battery voltage while the car is running, should be 13-14 volts. Also, check to make sure the valve cover gaskets aren't leaking down onto the alternator.

Oct 01, 2009 | 1992 Isuzu Trooper

2 Answers

Isuzu trooper overcharging (1996)

Make sure the ground wire going out of the voltage regulator is grounded and the alternator ground is good.Check all ground wires to there are the ones that stop the over charging.Theres also is a small little capacitor that should bolt right next to the regulator that holds alot of the over charging..

Mar 30, 2009 | 1996 Isuzu Trooper

2 Answers

What engines fit 1990 trooper

a chevy 2.8 and there is also an Isuzu 3.2 that will mount up with tranny and wiring harnesses. The 2.8 is a good engine, I have 300,000 miles on mine.

Nov 15, 2008 | 1990 Isuzu Trooper

1 Answer

Alternator belt diagram 1992 Isuzu trooper

1. Remove battery terminals and secure them away from the battery posts using nylon wire ties.

1a. Fine some comfortable eye glasses (clear or yellow) and keep them on. There are plenty of opportunities to get debris in your eyes during this procedure.

2. Spray "PB Blaster" (loosens bolts) on two bolts that secures alternator.

3. Jack-up vehicle on side to access alternator. Use a jackstand to support.

4. Using a 10mm open-ended wrench, loosen the bolt that swings the alternator. Screwing the bolt "in" or toward the engine will allow play to increase in the alternator belt. Loosen the 12mm bolt slightly next to the 10mm bolt (approximately 1.5" toward engine).

5. Continue to loosen 10mm bolt until there is enough slack in the belt to remove the belt from the alternator pulley.

6. Remove belt. It may be possible to remove belt without removing fan faring. Maybe not. If not, you will need to remove plastic fairing. If you must remove fair, go below fan fairing and disassemble connectors that hold together pieces of fan fairing. Carefully remove.

7. Install alternator fan from above.

8. Check that alternator belt is on all tracks (from below with a flashlight), and slowly tighten.

9. Secure 10mm and 12mm bolts. Recheck tightness.

10. Reassemble battery connection and run vehicle at idle for about 5 minutes. Check belt for proper tension.

11. CAREFULLY check tension of belt. Or disassemble battery connections and re-check belt tension.

12. Reassemble fan fairing (if not already assembled), re-connect battery terminals, and have a nice day. :-)

Nov 04, 2008 | 1992 Isuzu Trooper

3 Answers

ISUZU 95 3.2L

Mi camioneta isuzu trooper 1995, tiene ese problema en el tablero me marca CHEKC TRANS y se pone como huevona, ya no corre mucho. Que significara eso?

Gracias por la respuesta!!

Jul 08, 2008 | 1995 Isuzu Trooper

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