Edit: I apologize for the lengthy post, but any advice is appreciated.
My wife's daily is a 2014 Nissan Frontier SV 4.0L that is just shy of 100K miles. That truck has been rock-solid since new...until today. She's been complaining that every now and then she'd feel the engine randomly drag down for a second or two. That was a minor issue years ago which I attributed to the cheap gas she was buying at the time, a can of BG 44K fuel treatment (and top-tier gas) seemed to do the trick.
Since it appears to be doing it again I tried another can, but today on her way home she said the engine surged once or twice then completely stalled at a red light. It started right back up and no warning lights came on. She called me and I told her to leave the A/C off until she got home, which was only a few minutes longer with no problems. I have a pretty decent two-way scanner but there was not a single code to be found, not even any historical or latent codes (that my 2020 Silverado is loaded with).
I told her to leave the A/C off because I had an idea. We used to have a 2011 Altima (don't judge me!), and something similar happened. Turns out the compressor had locked up and as soon as the clutch was energized it would stall the engine. We live in the tropics so the A/C is on most of the time. The A/C works fine and the only thing I noticed was a barely audible low-pitched tone from around the engine whenever the compressor is on. I do have a set of gauges, but will probably need new hoses as the old one's are old and leaky. I'm curious if it's possible to tell if the compressor is on its way out if I monitor the pressures. I would assume the belt would squeal but she claims to have never heard that.
I'm grasping at straws here, but without a code or the ability to duplicate the problem on demand I have no idea where to begin. Not witnessing the problem myself doesn't help matters either. Has anyone ever experienced a similar issue or have any idea what to look for next? As always any help is appreciated.
My wife's daily is a 2014 Nissan Frontier SV 4.0L that is just shy of 100K miles. That truck has been rock-solid since new...until today. She's been complaining that every now and then she'd feel the engine randomly drag down for a second or two. That was a minor issue years ago which I attributed to the cheap gas she was buying at the time, a can of BG 44K fuel treatment (and top-tier gas) seemed to do the trick.
Since it appears to be doing it again I tried another can, but today on her way home she said the engine surged once or twice then completely stalled at a red light. It started right back up and no warning lights came on. She called me and I told her to leave the A/C off until she got home, which was only a few minutes longer with no problems. I have a pretty decent two-way scanner but there was not a single code to be found, not even any historical or latent codes (that my 2020 Silverado is loaded with).
I told her to leave the A/C off because I had an idea. We used to have a 2011 Altima (don't judge me!), and something similar happened. Turns out the compressor had locked up and as soon as the clutch was energized it would stall the engine. We live in the tropics so the A/C is on most of the time. The A/C works fine and the only thing I noticed was a barely audible low-pitched tone from around the engine whenever the compressor is on. I do have a set of gauges, but will probably need new hoses as the old one's are old and leaky. I'm curious if it's possible to tell if the compressor is on its way out if I monitor the pressures. I would assume the belt would squeal but she claims to have never heard that.
I'm grasping at straws here, but without a code or the ability to duplicate the problem on demand I have no idea where to begin. Not witnessing the problem myself doesn't help matters either. Has anyone ever experienced a similar issue or have any idea what to look for next? As always any help is appreciated.
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