v70 husband Posted August 6, 2011 Report Share Posted August 6, 2011 My wife recently took her '02 V70 in for a recall replacement. At that time, local dealer said coolant temp sensor also was coming up as a code. They wanted about $150 to do it, I told her no way I could fix. Before I got the chance, AC started to blow warm in stop & go traffic. AC service tech put in freon, worked fine for a couple days, now doing it again. I have read the bread clip shim fix for the clutch. Before I go into the clutch issue, is there any way the temp sensor could be causing AC to blow warm as a way to prevent overheating that it only thinks is happening? I have never seen temp guage in car over midway, so I think the temp sensor thing may not be valid. I just doen't want to tear into too many things unnecessarily. Anyone got any thoughts? Link to comment Share on other sites More sharing options...
Ihatespeedbumps Posted August 6, 2011 Report Share Posted August 6, 2011 Since the temp gauge isn't climbing, I doubt the A/C issue is related. A/C compressor clutch failure is extremely common, especially in hot weather with heat soak conditions like stop and go traffic. Start with that and see if it resolves your A/C issues. ECT (engine coolant temp sensor) and thermostat replacement are pretty easy DIY jobs, and I'm sure you could find a write up with a search on this site ;) Link to comment Share on other sites More sharing options...
v70 husband Posted August 6, 2011 Author Report Share Posted August 6, 2011 Thanks. That was kind of my thinking but it's always nice to get some validation. Link to comment Share on other sites More sharing options...
MrWinkey Posted August 10, 2011 Report Share Posted August 10, 2011 AC started to blow warm in stop & go traffic..... I have read the bread clip shim fix for the clutch. Before I go into the clutch issue, is there any way the temp sensor could be causing AC to blow warm as a way to prevent overheating that it only thinks is happening? No..... the A/c issue is unrelated(as stated already) ...fix the ECT and put a T-stat in it Shim the A/C clutch next spring as you don't wanna kill the clutch this winter.... Link to comment Share on other sites More sharing options...
Supernatural Posted July 22, 2012 Report Share Posted July 22, 2012 I'm having the same issues....code saying ECT needs attention, and A/C blowing cold then hot after about 15 minutes. The temperature just turned pretty hot here a week ago...so I'm checking the freon pressure, and getting ready to do the compressor shim job....then I'll replace the ECT and the thermastat and hopefully, be 'cool' for awhile. Link to comment Share on other sites More sharing options...
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