Got another quirky little issue to deal with, at some point anyway. When I'm running the heater and it switches on the whole car kinda skips a beat like; the lights dim a little for a second. Sounds minor I know but it's actually pretty annoying. The motor is also slightly affected as it gives a little lurch. Swapped the battery which helped a tiny bit but it's still noticeable... especially at lower rpm. New unit is a AutoCraft 151R.

Kinda gotta figure it's an electrical anomaly but I haven't a clue where to start. Heater works fine and will get plenty warm but it really bugs the crap out of me. I know it's a little car but I feel something is gotta be off. Less noticeable when the engine is more wound up but still there.

Any ideas? Like I said, brand new battery, and I haven't made any changes to the electrical, ignition, audio, etc. etc. everything is stock. No CEL or any obvious indications that something is broken. Was thinking maybe a bad ground but I haven't touched anything...

 

Are you using the defroster as well as the heater? If you're using the defroster that's the A/C compressor kicking on. Shouldn't do much just running the heater by itself.

 

Yea I typically use the front defroster so maybe i'll just stick to using the heater once i'm warmed up. If I remember correctly it does the same thing when I run the A/C so makes sense if it's just the compressor. Still kinda bothers me but it's a sub compact so I guess it's to be expected.

 

Nothing wrong with the car. Check this thread

for post #43 for more info

https://www.fitfreak.net/forums/gene...ckering-3.html