Mine does that...It is a vacuum leak in the emissions system...mine also idles erratically because the thermostatic switch for the ac compressor turns on and off becus of the leak.
If I can remember it correctly, there were 4418 81 Chevy Caprice 2 door Landeau Edition...if I'm wrong please correct me here...
Could be hitting something. Better take it in and have it looked at.
Set them apart and talk them through right's and wrong's. Well, it depends how old they are. Explain to them why hitting is wrong. Trust me grew up with ALOT of siblings.
deliberately get the Pin and Puk codes wrong (?) Try laying it on a very strong magnet, like the back of a speaker.
To block the 3 beams to prevent the wrong beam from hitting the wrong phosphor.
The Underdogs
Check the alternator if that don't do it change the battery
is it possible that the vent hose are disconected?
A foul shot or foul stroke
possibily its the wrong plugs could be hitting the pistons
Speedometer gives a wrong reading for Yukon XL 2003?
you either did not gap the plugs to spec or you put this wires on wrong