1996 Isuzu Trooper AC/Blower shuts off after warm up

1996 ISUZU TROOPER
185,000 MILES • 6 CYL • 4WD • AUTOMATIC
Avatar
MOUCHERONS
  • MEMBER
  • 2 POSTS
While the car is still not warmed up the AC and blower work perfectly fine, after the car has warmed up the AC/Blower system shuts down and indicator lights for the 4X4, Battery and Brake will come on. After turning the car off but not letting it cool down and re-start the system (AC/Blower) will not work, if the car is left to cool down and re-started it will work again for about 5-10min and do the same. While this happens nothing else (electrical or other) is malfunctioning.
Jun 22, 2010 at 8:47 PM
Advertisement
Avatar
KHLOW2008
  • CERTIFIED EXPERT
  • 41,814 POSTS
Hi Moucherons,

Thank you for the donation.

Symptoms indicates a possible fault with the ignition switch. When it heats up, it would fail in one of the circuits. Check if the switch is heated up when the problem occurs.
Jun 29, 2010 at 12:01 PM
Avatar
MOUCHERONS
  • MEMBER
  • 2 POSTS
[quote:a028c735e7="KHLow2008"]Hi Moucherons,

Thank you for the donation.

Symptoms indicates a possible fault with the ignition switch. When it heats up, it would fail in one of the circuits. Check if the switch is heated up when the problem occurs.[/quote:a028c735e7]

The issue was the alternator. These cars do not like cheap re-built units the diodes inside tend to fail aftr a couple of months of operation and could send a faulty signal to the ECU which will shut down anything that is drawing excessive power (i.e AC/Blower System). I replaced the alternator and everything is working again. Thanks anyway enjoy the donation. :)
Jun 30, 2010 at 8:17 PM
Advertisement
Avatar
KHLOW2008
  • CERTIFIED EXPERT
  • 41,814 POSTS
Thank you for the input and glad to know you have fixed the problem.

Have a nice day and thank you for using 2carpros.
Jul 1, 2010 at 8:52 AM