i got a 86 camaro with 2.8 v6 and i have a bad startup idling problem, wen i first krink my car up it will go from around 300rpm to 1400rmp up and down for about 5 mins and sumetimes it goes so far down it goes dead, and it floods baaad then but wen it gets warmed up it idles good? i changed plugs, wires, distributor cap, rotor button, and the coolant temperature sensor, and i dont know wats doing it.


If yall have a idea wat it is plzzz let me know cause i wanna fix it, thankz 4 help

 

iac

 

My 88 has an intial start-up problem almost similar to yours but maybe not as bad. In my case my vehicle suffers from bad valve seals which allow oil to seep into the combustion chamber while car sits for awhile. Then when I fire up the engine, it takes about 30 sec. to clear itself. The idle starts off low them jumps up then stabilizes. I don't know if your year is MPFI but if it is and is mass air, check the hose in between the throttle body and flow sensor for cracks. How's the mileage and oil consumption?As gotch said above,mayalsowant to check your IAC (idle air control)valve for excessive carbon build up.

 

thankz,andyall can i check my IAC by unplugging the wiring adapterfrom it and see if it runs the sameas it does with it pluged inidling?