Isuzu Bighorn 3.2D automatic sometimes wont start

www.fixya.com/cars/t3327109-isuzu_bighorn_automatic_transmission

5 answers
Nov 1, 2009 - Hi, i have got Isuzu Bighorn 3.1D 1993 model. ... When it slips it cant move even if yourave up the engine or even you you put in D1,D2,L.. ... Not check levels first. ... oil gets to hot and it also raises the heat-gauge, engine runs to hot. .... permission from Fixya Ltd. © 2005-2015, Fixya, Ltd. or it's affiliates. My 3.1 diesel Isuzu bighorn automatic transmission
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Park/Neutral Position Switch Replacement

Removal Procedure

1. Apply the parking brake.
2. Block the wheels.
3. Place the vehicle is the Neutral position.
4. Remove the throttle body air inlet duct. Refer to Air Cleaner Assembly Replacement in Engine Controls.


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5. Remove the automatic transaxle range selector cable.


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6. Remove the wiring harness connectors.
7. Remove the automatic transaxle range selector lever. Refer to Automatic Transmission Range Selector Cable Lever Replacement .


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8. Remove the PNP switch mounting bolts.
9. Remove the PNP switch.

Installation Procedure

Tool RequiredJ 41545 Park/Neutral Switch Alignment Tool

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1. Verify that the shift shaft in the Neutral position.
ImportantDO NOT ROTATE A NEW PNP SWITCH. A new PNP switch is pinned in the Neutral position. If the bolt holes do not align with the mounting boss on the transaxle, verify that the shaft is in the Neutral position.
Adjust the PNP switch if the new switch has been rotated and the pin is broken or if using an old PNP switch. Refer to Park/Neutral Position Switch Adjustment .
2. Align the flats of the shift shaft to the flats in the PNP switch.
3. Install the PNP switch to the mounting boss.
Caution! Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

4. Install the PNP switch mounting bolts.
Tighten
Tighten the PNP switch mounting bolts to 25 N·m (18 lb ft).

5. Install the automatic transaxle range selector lever. Refer to Automatic Transmission Range Selector Cable Lever Replacement .


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6. Install the wiring harness connectors.


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7. Install the automatic transaxle range selector cable.
ImportantVerify that the engine starts only in the Park position or the Neutral position once the PNP switch is installed. Readjust the PNP switch and/or check the shifter and the automatic transaxle range selector lever if the engine starts in any other position. Refer to Park/Neutral Position Switch Adjustment and/or Automatic Transmission Range Selector Lever Cable Adjustment .

8. Install the throttle body air inlet duct. Refer to Air Cleaner Assembly Replacement in Engine Controls.
9. Remove the blocks from the wheels.
10. Disengage the parking brake. Hope this helps, the page was read only so no pictures. Info is for 3.1L engine.

Is it automatic or manual assuming automatic for the moment
If it is automatic try to start it in ever gear by holding the ignition key all the way on and pulling the selector slowly between the ranges
If the starter catches and engine starts the inhibitor switch needs adjusting if not go to the next step which is for automatic & manuals. bridge the solenoid power wire with the main battery wire.
If this causes it to start with the ignition in the on position then manuals may have a faulty ignition switch automatics may have the inhibitor switch wires disconnected or a faulty ignition switch.
if the solenoid goes click click faulty solenoid or if no starter action happens then the the starter is cactus

Have you checked the trans oil level correctly when hot? If its OK then you need a trans specialist to carry out various tests with gauges etc

i had a similar problem with my pt cruiser, check the battery terminals sometimes its just a bad connection, you may need to buy new terminals, only ten dollars maybe

Code relates to error in transmission switch on side of automatic gearbox, as if the selector lever has been moved slightly out of its normal range. This might happen if the selector rod has been bent or the adjustment has become loose so when you engage 'drive' the lever is just a shade pushed too far or not enough. Check that the physical components: selector rod; the gear selector lever; and transmission selector lever are all as they should be.

The breakdown service in Nz says it is a problem with the auto transmission being a switch which is not acknowledging it is fully engaged in park, therefore, wont start. I have similar problem, he says to start it in Neutral when this happens. Not sure if this will work for you, but worth a try.

if you use the wrong oil viscosity will have trouble starting isuzu
oil switch in them has to have pressure up before she will open solenoid let fuel in
make sure proper oil was fitted

Change your gearbox oil, and clean out the oil strainer.
Should help.

( On some models, you have to remove the gearbox oil pan to clean the strainer )

FLUID TYPE: DEXRON 4 OR 6, 6 IS THE BEST AND NEWEST FLUID TYPE AND FAR SUPERIOR TO OLDER TYPE 4. DEXRON 6 PROVIDES MORE POSITIVE SHIFTS AND LONGER TRANSMISSION LIFE.