Posted: Jun 19 2009 at 2:06am | IP Logged

   Hope you guys can give me some advice.  I have a 2000 frontier I purchased last year with the knowledge that the a/c was out.  I thought I would try to fix it on my own but need some advice.  A/C clutch will not engage, but it will engage if currant is supplied to the proper relay terminal.  relay tests out ok but no currant to relay.  I have just put in a new tca switch in the plenum coil, still a no go.  when I hot wire the clutch, for a short time, no cold air, but high pressure line gets to hot to touch in just a short time, 60 sec.  Is there an other fuse or electrical component in the a/c circuit other than the ECM?  Is there a minimum freon pressure switch that will not turn the currant to the clutch when no freon is present?  I have the gauges but can not find psi numbers to fill the a/c line to see if it just needs some coolant.  Any thoughts would be a Godsent as money is tight, and Utah is getting hot fast.  Had to give my car to my dad for a while as he blew a timming belt and bent a valve.  At 86 I hope i get my GTP back ok.

                                                      Hashbrown

Posted: Jun 20 2009 at 10:53pm | IP Logged

..

Welcome to the group.

Many GM cars have a low pressure sensor and some do more than shut off the clutch. 1986 Cadillacs even turned off the electric cooling fans! See how far you get on a hot day... What a piece of crap.

I'm not an AC man but it seems like a 134 installation kit would have a guide line about the AC pressure readings.

Have a good one while you can still laugh about it.. Don S..

Who else protects the 2^nd Amendment & Freedom? > Join Free:

http://www.nrahq.org/nrabonus/accept-membership.asp