- Dec 3, 2011
- 522
Years back (2018?), I installed the PCM of NC e-fan kit (3-relay) on my 08 Saab 97x 5.3i... its worked great until this year.
The issue I am having is, only 1 fan will turn on High speed when commanded - either the PCM or by the manual switch. I can swap the fan wiring harness back and forth, and the other fan will run high, so its not the fans themselves. Both low fans work on low speed as designed.
I have swapped the relays, no change. Still, only 1 fan kicks on high. Fuses are good. I do not know what else to check.
I wrote Kelly at PCM of NC and he suggested the wiring harness is bad, and for $125 + shipping I can be new again. But I thought I'd check first to see if anybody else has had this issue, or has any insight of how to troubleshoot this? I'd hate to spend the money to replace the wiring harness, and it not actually be the issue.
The issue I am having is, only 1 fan will turn on High speed when commanded - either the PCM or by the manual switch. I can swap the fan wiring harness back and forth, and the other fan will run high, so its not the fans themselves. Both low fans work on low speed as designed.
I have swapped the relays, no change. Still, only 1 fan kicks on high. Fuses are good. I do not know what else to check.
I wrote Kelly at PCM of NC and he suggested the wiring harness is bad, and for $125 + shipping I can be new again. But I thought I'd check first to see if anybody else has had this issue, or has any insight of how to troubleshoot this? I'd hate to spend the money to replace the wiring harness, and it not actually be the issue.