A/C relay constantly kicking out

Asked by KateJ Aug 31, 2016 at 11:36 AM about the 2006 Toyota Tacoma V6 4dr Access Cab 4WD SB with automatic

Question type: Maintenance & Repair

I have an 06 Tacoma V6 and had to have the A/C pump replaced and the
dryer.  I have put in new relay's that were purchased at local parts stores
but they do not last more than a day.  I was told to go to Napa and get a
higher priced one, well, they have the same as local - all cost about $16
and didn't last.  I have ordered one from Toyota for $80 and am worried it
may be taken out as well.  Is there anything else that could be causing
this?

1 Answer

103,215

First thing that comes to mind when relays keep blowing out is a bad ground. The AC relay trigger voltage is fairly low (I think +/- 5V?) if a ground is bad and hovering at or above +/-5V, the relay can't react to trigger or even experiences a polarity reversal. My recommendation is to go through all your ground connections, clean them or reseat them. Replace all brittle ground wires and straps.

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