6th Gen ('00-'05): Rough idle for 5 min on start up
#1
10-12-2018, 08:06 AM
Rough idle for 5 min on start up
2002 Monte Carlo
Ok help me out with this one... what would cause a car to run poorly for the first 5 min on start up when engine is cold (cold as in not at normal operating temperature not as in its outside and its - 50) then after that it runs fine.
Notes
Replaced MAF
cleaned throttle body
Ok help me out with this one... what would cause a car to run poorly for the first 5 min on start up when engine is cold (cold as in not at normal operating temperature not as in its outside and its - 50) then after that it runs fine.
Notes
Replaced MAF
cleaned throttle body
Last edited by Dukes1995; 10-12-2018 at 08:09 AM. Reason: For got to add modle
#2
10-12-2018, 11:43 AM
Join Date: May 2013
Location: Nebraska
Posts: 5,282
Well the few things that I usually check are.
2002 Monte Carlo
Ok help me out with this one... what would cause a car to run poorly for the first 5 min on start up when engine is cold (cold as in not at normal operating temperature not as in its outside and its - 50) then after that it runs fine.
Notes
Replaced MAF
cleaned throttle body
Ok help me out with this one... what would cause a car to run poorly for the first 5 min on start up when engine is cold (cold as in not at normal operating temperature not as in its outside and its - 50) then after that it runs fine.
Notes
Replaced MAF
cleaned throttle body
Vacuum line is off someplace? this was off on my SUV with a 3400 motor and it was hidden under a foam protector hose.
Vacuum line is leaking?
Fuel system needs cleaning?
Air filter is plugged?
Fuel Filter is plugged?
Plug wire is bad?
Needs new plugs?
These are the cheaper repairs.
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