Question about Isuzu Trooper
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Posted on Jan 02, 2017
SOURCE: 1992 isuzu trooper 3.2 DOHC
I had the same trouble with my 93 Trooper.
I went on a sensor-changing spree.
The one sensor that fixed this idle problem was the throttle position sensor.
You can get one here.
Throttle Position Sensor
It's very easy to change, and fixes the problem instantly.
Posted on Sep 19, 2008
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. :-)
Posted on Jan 04, 2009
Replace the speed sensor located on the transmission this sends the signal to the speedometer, you may want to check the plug and its terminals to be sure the terminals in the plug are not corroded if they are clean the terminals with electrical contact cleaner then drive the care see if cleaning the plug fixed it if not replace the speed sensor.
Posted on Dec 07, 2009
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