I have been trying to trace down intermittent HVAC issue in my 2003 Suburban 1500 5.3.
AC works mostly while in motion, but if I sit at idle too long the compressor stops kicking in.
My most recent diagnostics shows me that the relay is heating up and stops working. With my last troubleshooting experience when the AC stopped working while at idle, I checked the relay. It was very warm to touch. I swapped it with the horn relay and it started working again.
Can this just be a symptom of an old worn relay, or could there be something else causing the relay to heat up (Like a worn clutch or coil?)
The horn relay I swapped it with was starting to warm up to touch, but I did not wait for it to go into thermal protection. I imagine all these relays are as old as the vehicle is.
I also imagine that while in motion, the engine compartment stays cool enough to keep the relay from heating up to a point of failure, which is probably why my problem occurs mostly at idle.
Any advice?
Any such thing as a more thermally resistant high temp relay?
AC works mostly while in motion, but if I sit at idle too long the compressor stops kicking in.
My most recent diagnostics shows me that the relay is heating up and stops working. With my last troubleshooting experience when the AC stopped working while at idle, I checked the relay. It was very warm to touch. I swapped it with the horn relay and it started working again.
Can this just be a symptom of an old worn relay, or could there be something else causing the relay to heat up (Like a worn clutch or coil?)
The horn relay I swapped it with was starting to warm up to touch, but I did not wait for it to go into thermal protection. I imagine all these relays are as old as the vehicle is.
I also imagine that while in motion, the engine compartment stays cool enough to keep the relay from heating up to a point of failure, which is probably why my problem occurs mostly at idle.
Any advice?
Any such thing as a more thermally resistant high temp relay?