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.
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.
High idle, misfire, check engine light,High idle, misfire, check engine light,
My car did the same thing So I hooked it up to a computer come to find out it was 2 oxygen sensors that went bad.
My idle was running rough and slight loss of power (5 cylinder engine). The power loss is more noticeable on cars with less cylinders.