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sprinkles08, ASE Certified Technician
Category: Car
Satisfied Customers: 22979
Experience:  ASE Master and Advanced level certified. Factory trained with 15 years dealership experience
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isuzu trooper: )n a 1988 Isuzu Trooper with auto trans AW30-80LE,which

Customer Question

)n a 1988 Isuzu Trooper with auto trans AW30-80LE,which solenoid controls over drive?
Submitted: 4 years ago.
Category: Car
Expert:  sprinkles08 replied 4 years ago.
Hello and welcome to JustAnswer!

Solenoid 2 is the solenoid that controls the 3-4 shift valve, but also controls the 1-2 shift valve. I am unable to find a correlation between the solenoid and the wire colors that you mentioned but believe solenoid number 2 should be the middle, white wire. The correct solenoid resistance should be 11-15 ohms so it's easy to check the solenoids themselves.

Since the same solenoid controls the 1-2 and 3-4 shift valves, if your problem is only the loss of fourth gear but it shifts fine into second then you should be able to rule out the solenoid and it's control circuit.