Some of you may remember my month long saga of getting my ‘95 K1500 Sierra to idle and accelerate properly. Bunch of new parts (seemed to) get it idling properly. More importantly, my off-idle stumble is finally gone.
Fast forward to last week. I finally installed all of my new A/C components and charged the system. It’s HEAVENLY having cold A/C here in southern AZ. BUT… now when the A/C is on the idle is very unstable, hunting regularly. Yesterday on a whim I swapped in another IAC valve. Idle is now again steady under all circumstances. So my brand new SMP IAC valve was defective. It worked just fine when the A/C was not functioning, but as soon as I got the A/C up and running it started acting wonky.
I love the quality of new parts….
Fast forward to last week. I finally installed all of my new A/C components and charged the system. It’s HEAVENLY having cold A/C here in southern AZ. BUT… now when the A/C is on the idle is very unstable, hunting regularly. Yesterday on a whim I swapped in another IAC valve. Idle is now again steady under all circumstances. So my brand new SMP IAC valve was defective. It worked just fine when the A/C was not functioning, but as soon as I got the A/C up and running it started acting wonky.
I love the quality of new parts….