Hello all, I’m new to the forum, so thanks for having me! I come from a family of master techs, and performance engine builders, and previously worked for a few local dealerships, and currently do some auto mechanic work on the side. I would consider my auto mechanic knowledge/skill level intermediate at best, still learning!!
On to the A/c issue with the V.
First off I replaced the wife’s A/C compressor earlier this year due to the old one taking a dump on the V.
After installing the new compressor, we got about 5 good months out of it before this new issue formed.
The issue: at norm Op temp the clutch will cycle on, then back off about 10-15 seconds later, as if it’s low on Freon. (No codes present or stored on ECU)
So I swing by the local auto parts store, grab myself a handy dandy can of 134a, and get back home. I keep the car running so it’s nice and hot, turn the air to max with re-circ on. And I can’t find my manifold gauges...... soo luckily I have a low pressure feeder hose with a gauge on it (yawn). I hook the bad boy up crack the bleeder screw open barely and the needle instantly jumps to 45 PSI, and holds there. I wait for the compressor to cycle and it drops to about 39-40PSI for a split second, then right back when compressor clutch re-engages.
So next I throw a temp gauge in the vent. She blows steady 39 degrees with 97 out side ambient air temp.
With all of this said, I’m looking for anyone that might have had the same issue, what did you do? My plans are to start with finding my 134a gauges to check the high and low system psi, next the Idle sensor, because often when it’s warm and the vehicle comes to a stop, the RPMs will fall to about 550-575 and the clutch will cycle out. I’ve heard this is a common issue. Next the EVAP temp sensor? Compressor relay seems to be in working order (will still inspect for correct operation though)..
Any input would be greatly appreciated!
On to the A/c issue with the V.
First off I replaced the wife’s A/C compressor earlier this year due to the old one taking a dump on the V.
After installing the new compressor, we got about 5 good months out of it before this new issue formed.
The issue: at norm Op temp the clutch will cycle on, then back off about 10-15 seconds later, as if it’s low on Freon. (No codes present or stored on ECU)
So I swing by the local auto parts store, grab myself a handy dandy can of 134a, and get back home. I keep the car running so it’s nice and hot, turn the air to max with re-circ on. And I can’t find my manifold gauges...... soo luckily I have a low pressure feeder hose with a gauge on it (yawn). I hook the bad boy up crack the bleeder screw open barely and the needle instantly jumps to 45 PSI, and holds there. I wait for the compressor to cycle and it drops to about 39-40PSI for a split second, then right back when compressor clutch re-engages.
So next I throw a temp gauge in the vent. She blows steady 39 degrees with 97 out side ambient air temp.
With all of this said, I’m looking for anyone that might have had the same issue, what did you do? My plans are to start with finding my 134a gauges to check the high and low system psi, next the Idle sensor, because often when it’s warm and the vehicle comes to a stop, the RPMs will fall to about 550-575 and the clutch will cycle out. I’ve heard this is a common issue. Next the EVAP temp sensor? Compressor relay seems to be in working order (will still inspect for correct operation though)..
Any input would be greatly appreciated!