runs rough at start up
Thread Starter
Instructor
Joined: Jan 2009
Posts: 170
Likes: 1
From: Crofton MD
runs rough at start up
When I start my car is runs like **** at first. If i dont keep my foot on the gas the engine will stall. Although once the car gets warm it usually runs great. Except ive noticed my idle will sometime be steady at around 800rpm and for whatever reason sometimes it will be around 500 or a tad lower. Ive already cleaned the hell out of the throttle body, which helped a little. I also replaced the injectors and installed new pushrods and lifters and new head gasket.
Advanced
Joined: Nov 2006
Posts: 62
Likes: 0
From: Texas
When I start my car is runs like **** at first. If i dont keep my foot on the gas the engine will stall. Although once the car gets warm it usually runs great. Except ive noticed my idle will sometime be steady at around 800rpm and for whatever reason sometimes it will be around 500 or a tad lower. Ive already cleaned the hell out of the throttle body, which helped a little. I also replaced the injectors and installed new pushrods and lifters and new head gasket.
Le Mans Master
Joined: Jul 2007
Posts: 5,043
Likes: 8
From: Tampa Florida
Any codes triggered?
If the lifters have the proper preload, TPS voltage is in spec & the IAC has been clean and reset accordingly to the multiple steps outlined in the Factory Service Manual (FSM)....check the timing sounds like it may need a little more advance.
If the lifters have the proper preload, TPS voltage is in spec & the IAC has been clean and reset accordingly to the multiple steps outlined in the Factory Service Manual (FSM)....check the timing sounds like it may need a little more advance.
Le Mans Master
Joined: Dec 2000
Posts: 7,839
Likes: 22
From: San Diego, Ca
The Coolant Temp Sensor is it's choke - Colder, more fuel; hotter less. You need to verify that it agrees with ambient after it's sat overnight. Hookup a scanner so that you can see what the ECM is seeing or spend 12 Bucks on a new one and just plug it into the harness. If it starts up and runs right, replace it.
