Poor idle during warm-up
Posted: Sun May 10, 2015 10:38 am
Hello
I hope that i can write so you understand me( Iam from Sweden)
I have a problem with my car. During warm-up the idle is really bad, and the throttle response as well.
The problem starts about after 1 minute after start of the car. And is like that about 3-5 minutes.
And if the car have been warm and sits about 10 minutes or so, when i start it, it sounds like it only running 3 cylinders. Have to rev a couple of times then it runs just fine
Thing that i have changed.
Both fuel pumps
Fuel filter
Sparkplugs, cables, rotor and cap.
Changed the wur to another one,(used)
Changed fuel pressure ackumulator (Used) No vissible leakage
Injectors new all 4
Cold start valve is checked ans seems to work, no dripping .
All the vakkuum hoses are ok.
Read the fuel pressure and got this
1 ,inute running 1,5bar
1,30 minute 2 bar
2 min 2,4 bar
3 min 2,9bar
4 min 3.3bar
4.5min 3.5bar
5min 3.6bar
6min 3.6bar
I did this while holding throttle cabel to prevent the car dying.
When the car was cold i jumped the pumps to check cold pressure
Closed valve pump running 5.4 bar (system pressure)
Cold control open valve 1bar
I hope that you canhelp me.
//Tommy
I hope that i can write so you understand me( Iam from Sweden)
I have a problem with my car. During warm-up the idle is really bad, and the throttle response as well.
The problem starts about after 1 minute after start of the car. And is like that about 3-5 minutes.
And if the car have been warm and sits about 10 minutes or so, when i start it, it sounds like it only running 3 cylinders. Have to rev a couple of times then it runs just fine
Thing that i have changed.
Both fuel pumps
Fuel filter
Sparkplugs, cables, rotor and cap.
Changed the wur to another one,(used)
Changed fuel pressure ackumulator (Used) No vissible leakage
Injectors new all 4
Cold start valve is checked ans seems to work, no dripping .
All the vakkuum hoses are ok.
Read the fuel pressure and got this
1 ,inute running 1,5bar
1,30 minute 2 bar
2 min 2,4 bar
3 min 2,9bar
4 min 3.3bar
4.5min 3.5bar
5min 3.6bar
6min 3.6bar
I did this while holding throttle cabel to prevent the car dying.
When the car was cold i jumped the pumps to check cold pressure
Closed valve pump running 5.4 bar (system pressure)
Cold control open valve 1bar
I hope that you canhelp me.
//Tommy