1999 Pontiac Bonneville "rough running" Questions

2000 Bonneville runs rough when cold My 2000 Bonneville runs really rough and misses when I first start it up. After it warms up it seems to run fine. I havent seen the check engine light come on. Any

RUNNING ROUGH AND WERE HAVING A HARD STARTING PROBLEM TOO? DID ANYONY EVER CHECK YOUR EMMISSIONS?YOU WOULD BE AMAZED WHAT A CLOGGED CATALYTIC CONVERTER WOULD DO (MANY OF MY CUSTOMERS CAME IN WITH THAT

1995 bonny 3.8. car starts runs rough then dies. check engine light comes on. turn key off then back on and it will start idle rough then die again after several attempts it will start and run pretty ...

my 2000 bonneville idles rough. 3.8 liter. it even my 2000 bonneville is missing when it idles. 3.8 liter. it even runs a little rough at first acceleration but still has good acceleration. 170k miles

...IN A 1998 BONNEVILLE 3.8L ENGINE. AFTER THE REPAIR I STARTED TO ENGINE. IT STARTED FUN BUT IT RUNS ROUGH INTERMITTENTLY AND MAKES A LOUD INTERMITTENT TICKING OR KNOCKING NOISE. PLEASE HELP!!! I'M ...

rough idle 1995 Only rough at idle in PARK OR DRIVE when stopped. Runs GREAT otherwise. check your idlesensor might need changing

...running rough check engine light flashing low on coolant 1999 Bonneville runs rough for one minute, then check engine light flashes. Coolant reservoir low--the manual calls for Dexcool but I am not ...

2000 pontiac bonnevelle sometimes it starts and runs nice other times it stalls out and runs rough replace the high tension cables and spark plugs

...rough. Had it coded - p0102 and po135, i replaced the MAF, MAP, and the throttle positioning sensor and nothing changed. Replaced the O2 sensor and that seemed to fix it, i drove it about and ...

starts and stalls - mostly when engine is warm.. on occassion the engine would run rough when it's idling down at slower speed and then the engine would run run - similar to start up's. your ignition ...