Replaced the OVP was not the problem. Still hard to start when cold. Also intermittent ABS light don't know if that would cause any cold start problems. Going to change the cold start valve next to see if that fixes the problem.
It is not the OVP. Still hard start problem.
Going to change the cold start valve. ABS intermittent light problem related or not related to cold start problem. Hope it is not ECU
Vehicle: 1993 190e-2.3; 1992 300E-3.0, 1998 Saab 9000T
Location: Brunswick, GA
Posts: 107
Don't just replace parts. The cold start problem with the ABS light sure seems like an OVP. But if you replaced it with new and still the same problem, then it's not.
What is the ambient temperature when you are trying to start it cold? It has to be fairly cold for the cold start valve to kick in. Did you try to give the CSV 12 volts while starting?
I read your first post and you say if you pump the gas, then it will start. Do you mean that it will start and run like normal, after pumping the gas? If so, then it seems to be a fuel problem like a leak that allows the fuel pressure to drop after the car sits for a while. I think a bad fuel pressure regulator could do that.
Tried numerous parts and I am now going to return the good parts.
Very well could be the fuel pressure rgulator but I am not going to buy one to just trouble shoot with.
OVP is good cold start valve is good fuel pumps and filter ok fuel pump relay ok.
Going to take it to a STAR mercedes machanic to diagnose the problem.
Vehicle is even harder to start now do not want to burn out the starter trying to start it anymore.
Did drive it last week it took several cranks to start it. While pumping the gas.
Drove it around drove fine. Also started fine when it was warm. Now every new part I have tried has not worked.
Are you "pumping" the gas pedal before engergizing the fuel pump? After? Given the fuel injection system, I'm not sure what depressing the gas pedal prior to starting the car is doing much good.
A failing/broken vacuum line could do this also, just had work done on mine, car wouldnt start one morning, idle went nuts the day before,turned out that the vacuum lines to the icv were screwed.
Linear Mode
