1993 Buick Riviera "rough idle codes" Questions

my 1993 riviera idles rough after new plugs and wiresis this the maf sensor going bad cleaned maf sensor put new plugs and wires on and it still idles rough you need to have the car scann the ecu and ...

rough idle/1990 buick riviera/3.8 l This auto has sit for part of one year. Rough idle might be caused by old gas. Maybe a fuel additive or check what next. I agree with the possible bad fuel theory.&

...rough prior to this now its missing bad and died while it was in park idling, service engine light still on and its scarring me. I havent driven it since it barely got me home 3 days ago. Havent ...

idle air control. still code 303 and rough idling. Please provide solution. Check on intake silicon gaskets, upper and lower. About $18 at autozone check the  #3 coil. code p0303 says misfire on

...codes The vehicle idles rough. Also had a few codes before the rough idling began (throttle position sensor) Try cleaning TAC valve, spray throttle body cleaner in upper right of opening clean

...IDLE ROUGH ISSUES It can be issue with IAC( idle air control valve) causing the problem. There are many other possibilities causing these idle issues.Engine idles rough. There are few help links with ...

...idle picks up after a few seconds . The basics for a rough idle, check for a leak of some kind, fuel--egr--vacuum leak. Check and clean anything to do with idle air system. How long since a

rough running and the idle speed should return to normal and the code should disappear. https://www.obd-codes.com/p0506 P0506: When a vehicle is idling, the engine idle speed should remain between 750

...rough idle 1.9L 1.9L runs idles rough and doesn't have power like it should The basics for a rough idle, check for a leak of some kind, fuel--egr--vacuum leak. Check and clean idle air system. How ...

rough idle and code po1562 car idles rough, speed up 100 rpms and it smooths out. Runs fine,no smoke, ran purge thru injectors, no change. Acts like injector is spitting at idle. Then when it rolled ...