850 Smoking Exhaust after replacing radiator
#1
850 Smoking Exhaust after replacing radiator
I have a 96 850, non-turbo, that I've been using regularly for a few hundred miles each week for a few years with absolutely no major problems. Recently, the radiator went, so I just replaced it about a week ago. Ever since replacing the radiator, I've had some strange behavior:
-engine runs very rough at a cold start
- white smoke comes from tailpipe, and then completely goes away once engine is warmed up
- low coolant light comes on and off while driving, until engine is warmed up, then never comes back on
I've since once had a check engine light after a rough start, and pulled codes p0302 and p0300 (cylinder misfires). For the sudden rough starts, I'm guessing that I need to recheck all the vacuum lines that I had to disconnect when removing the old radiator, or possibly clean the MAF. A couple of years ago I did fix a similar problem with very rough idling, similar codes, by replacing a broken vacuum line going to one of the devices mounted on the fan shroud to the intake.
What I don't understand, and am a little scared of, is why I suddenly have white smoke blowing out the tailpipe, and the red low coolant warning light coming off and on, and then both problems going away after running the engine until it reaches normal operating temperature.
And again, this car was working perfectly fine before replacing the radiator.
Any ideas would be greatly appreciated. Thanks a lot.
-engine runs very rough at a cold start
- white smoke comes from tailpipe, and then completely goes away once engine is warmed up
- low coolant light comes on and off while driving, until engine is warmed up, then never comes back on
I've since once had a check engine light after a rough start, and pulled codes p0302 and p0300 (cylinder misfires). For the sudden rough starts, I'm guessing that I need to recheck all the vacuum lines that I had to disconnect when removing the old radiator, or possibly clean the MAF. A couple of years ago I did fix a similar problem with very rough idling, similar codes, by replacing a broken vacuum line going to one of the devices mounted on the fan shroud to the intake.
What I don't understand, and am a little scared of, is why I suddenly have white smoke blowing out the tailpipe, and the red low coolant warning light coming off and on, and then both problems going away after running the engine until it reaches normal operating temperature.
And again, this car was working perfectly fine before replacing the radiator.
Any ideas would be greatly appreciated. Thanks a lot.
#2
I have a 96 850, non-turbo, that I've been using regularly for a few hundred miles each week for a few years with absolutely no major problems. Recently, the radiator went, so I just replaced it about a week ago. Ever since replacing the radiator, I've had some strange behavior:
-engine runs very rough at a cold start
- white smoke comes from tailpipe, and then completely goes away once engine is warmed up
- low coolant light comes on and off while driving, until engine is warmed up, then never comes back on
I've since once had a check engine light after a rough start, and pulled codes p0302 and p0300 (cylinder misfires). For the sudden rough starts, I'm guessing that I need to recheck all the vacuum lines that I had to disconnect when removing the old radiator, or possibly clean the MAF. A couple of years ago I did fix a similar problem with very rough idling, similar codes, by replacing a broken vacuum line going to one of the devices mounted on the fan shroud to the intake.
What I don't understand, and am a little scared of, is why I suddenly have white smoke blowing out the tailpipe, and the red low coolant warning light coming off and on, and then both problems going away after running the engine until it reaches normal operating temperature.
And again, this car was working perfectly fine before replacing the radiator.
Any ideas would be greatly appreciated. Thanks a lot.
-engine runs very rough at a cold start
- white smoke comes from tailpipe, and then completely goes away once engine is warmed up
- low coolant light comes on and off while driving, until engine is warmed up, then never comes back on
I've since once had a check engine light after a rough start, and pulled codes p0302 and p0300 (cylinder misfires). For the sudden rough starts, I'm guessing that I need to recheck all the vacuum lines that I had to disconnect when removing the old radiator, or possibly clean the MAF. A couple of years ago I did fix a similar problem with very rough idling, similar codes, by replacing a broken vacuum line going to one of the devices mounted on the fan shroud to the intake.
What I don't understand, and am a little scared of, is why I suddenly have white smoke blowing out the tailpipe, and the red low coolant warning light coming off and on, and then both problems going away after running the engine until it reaches normal operating temperature.
And again, this car was working perfectly fine before replacing the radiator.
Any ideas would be greatly appreciated. Thanks a lot.
#4
Sounds like the old radiator caused the engine to overheat and ruined your head gasket
Try a leak down test or start the engine cold with the coolant cap off to check for signs of bubbling or something like boiling. If this is the case try and get it fixed asap as you can ruin the head or seize the motor.
Try a leak down test or start the engine cold with the coolant cap off to check for signs of bubbling or something like boiling. If this is the case try and get it fixed asap as you can ruin the head or seize the motor.
#5
I have a 96 850, non-turbo, that I've been using regularly for a few hundred miles each week for a few years with absolutely no major problems. Recently, the radiator went, so I just replaced it about a week ago. Ever since replacing the radiator, I've had some strange behavior:
-engine runs very rough at a cold start
- white smoke comes from tailpipe, and then completely goes away once engine is warmed up
- low coolant light comes on and off while driving, until engine is warmed up, then never comes back on
I've since once had a check engine light after a rough start, and pulled codes p0302 and p0300 (cylinder misfires). For the sudden rough starts, I'm guessing that I need to recheck all the vacuum lines that I had to disconnect when removing the old radiator, or possibly clean the MAF. A couple of years ago I did fix a similar problem with very rough idling, similar codes, by replacing a broken vacuum line going to one of the devices mounted on the fan shroud to the intake.
What I don't understand, and am a little scared of, is why I suddenly have white smoke blowing out the tailpipe, and the red low coolant warning light coming off and on, and then both problems going away after running the engine until it reaches normal operating temperature.
And again, this car was working perfectly fine before replacing the radiator.
Any ideas would be greatly appreciated. Thanks a lot.
-engine runs very rough at a cold start
- white smoke comes from tailpipe, and then completely goes away once engine is warmed up
- low coolant light comes on and off while driving, until engine is warmed up, then never comes back on
I've since once had a check engine light after a rough start, and pulled codes p0302 and p0300 (cylinder misfires). For the sudden rough starts, I'm guessing that I need to recheck all the vacuum lines that I had to disconnect when removing the old radiator, or possibly clean the MAF. A couple of years ago I did fix a similar problem with very rough idling, similar codes, by replacing a broken vacuum line going to one of the devices mounted on the fan shroud to the intake.
What I don't understand, and am a little scared of, is why I suddenly have white smoke blowing out the tailpipe, and the red low coolant warning light coming off and on, and then both problems going away after running the engine until it reaches normal operating temperature.
And again, this car was working perfectly fine before replacing the radiator.
Any ideas would be greatly appreciated. Thanks a lot.
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