1996 Isuzu Trooper AC/Blower shuts off after warm up

MOUCHERONS

MEMBER
1996 ISUZU TROOPER
6 CYL
4WD
AUTOMATIC
185,000 MILES

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.

3 Replies

KHLOW2008

MECHANIC
41,815 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.

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Tuesday, June 29th, 2010 AT 12:01 PM

MOUCHERONS

MEMBER
2 POSTS

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. :)

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Wednesday, June 30th, 2010 AT 8:17 PM

KHLOW2008