many cars todayhave aluminum heads and cast iron blocks these different metals heat and cool at different rates if you have overheated you may have warped the head or cracked the block
yes it can
Well...the misfire on 1 and 3 would explain the rough idle. The misfire could be from worn plugs, wires, bad coil, or bad injectors.
Check idle adjustment (rpm) then check timing, then check for misfire-start there.
Doubtful. Bad spark plugs would give you a rough idle, hesitation and poor performance. And they may also give you a P0300 code for random misfire.
Run a compression test.
Check engine light is on with a misfire code, rough idle, lack of power, low compression.
Check the Park Avenue EGR valve for a clog. A clogged valve can cause a rough idle and stall at a light.
High idle, misfire, check engine light,High idle, misfire, check engine light,
I would tune it up, Plugs and wires, Factory AC Delco Cap and Rotor And change the fuel filter.
Misfire is usually caused by faulty wires or spark plugs or both. Throttle position sensor failure generally causes poor response to the throttle. That is poor acceleration, slow to return to idle and rough idle.
if its only on idle it sounds like a bad injector
Morgan