Questions & Answers for: runs rough until warmed up

...runs very rough (as though not firing on all 4 cylinders) then after a minute it runs fine...spark plugs look clean... seem like you got the same problem as my scion xa, check the fuel pressure ...

...rough idle untilit warms up. Then runs fine accept for what appears to be a file or cracked spark plug which is minor compared to how rough it idles at start up. Really smell the gas and exhust until ...

...runs rough when warm. When started cold it runs well and gets great mileage until engine is warm for 10 minutes and encounters a stop sign or deceleration; the engine light comes on and it will ...

...rough when warmed up. It starts well when cold (10 degrees outside) and runs fine until it warms up. It runs fine otherwise. My local Advance Auto got the codes for me. They are P0171 and P0174, ...

runs rough until warm I have a 1998 Toyota xl, It runs rough until the engine warms up, then it runs like a champ. I had a code, it was the camshaft position sensor, this has been changed and I do not

cold start rough idle until it warms 2000 2.0 non turbo beetle cold start rough idle until it warms then runs fine Could be the fast idle sensor check to see that the vacume line is hooked up properly

runs rough untill i hold revs up for a while. Have changed s/plugs,fuel filter.air filter, cleaned throttle body.Any ideas on fixing this problem would be appreciated.Thanks This was the first symptom

runs rough until engine warms up starts fine but runs rough for about two miles then runs fine. Does not help to let the engine warm up before driving, but driving does. could be your temperature ...

...runs very rough until it starts to warm up. It runs smooth once its warmed up. It's just the initial start up (in winter weather) when it chugs & runs rough during idle warm ups. The colder the ...

...fine until it warms up then it runs rough in gear hard to start when its warmed up after it warms up it runs rough and when I put it in gear it wants to die and is hard to start im thinking egr ...