jet_doctor
New Member
- Joined
- Nov 4, 2007
- Messages
- 8
- Reaction score
- 0
- Points
- 0
- Vehicle Year
- 1995
- Make / Model
- Ford
- Transmission
- Manual
Hello,
My cold start problem seems to be unique to some of the other ones I've read. As the outside temp decreases the problem shows itself and gets worse as the temp decreases further. Normally, when you start the engine the rpm runs over the 2500 rpm mark and then stabilizes at 1500. With mine as the temp gets down around the freezing mark the truck fires up and runs at a very low rpm (around 1000 or less) and then after 5-10 seconds the engine will surge to 2500 rpm and then stabilize at a normal idle rpm. As the temp drops further the engine goes into a surge/falter cycle decreasing in severity until it runs normally. When it gets really cold the engine will sometimes quit before it gets to that first initial surge, in which case a re-start gets me going. One clue is that having the block heater plugged in hides the problem when the weather is extremely cold. I have never experienced any power loss while driving. So far the fuel filter has been changed, its had a fuel system treatment and the ECM software was updated...No joy.
Any advice is appreciated. Thanks in advance
My cold start problem seems to be unique to some of the other ones I've read. As the outside temp decreases the problem shows itself and gets worse as the temp decreases further. Normally, when you start the engine the rpm runs over the 2500 rpm mark and then stabilizes at 1500. With mine as the temp gets down around the freezing mark the truck fires up and runs at a very low rpm (around 1000 or less) and then after 5-10 seconds the engine will surge to 2500 rpm and then stabilize at a normal idle rpm. As the temp drops further the engine goes into a surge/falter cycle decreasing in severity until it runs normally. When it gets really cold the engine will sometimes quit before it gets to that first initial surge, in which case a re-start gets me going. One clue is that having the block heater plugged in hides the problem when the weather is extremely cold. I have never experienced any power loss while driving. So far the fuel filter has been changed, its had a fuel system treatment and the ECM software was updated...No joy.
Any advice is appreciated. Thanks in advance