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Replacing Coolant Sensor/Expansion Tank
I'm gonna attempt to rid my world of that balst "check coolant level" obc message this weekend. There are some items I'd like to clarify before starting.
1. Is it possible to remove the sensor without removing the lower radiator hose? 2. If the lower hose needs to be removed, does that drain JUST the coolant in the expansion tank, or the entire system? 3. If removing the lower hose only drains the coolant in the expansion tank, once I take it off, how would I remove the expansion tank itself? 4. Presuming I catch the coolant that drains from the expansion tank with a drain pan, is it alright to put that right back in the tank after it's been reinstalled. My system was done a short time ago. Basically I'm trying to either replace the sensor, or the whole expansion tank without having to drain the entire cooling system, refill, & bleed. Any thoughts or suggestions?
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Every Boy Becomes A Man. A Fortunate Few Reverse The Process. 97 328is Black on Black 5 speed Sport Package, Short Arm Intake with ABS Molded Heat Shield, Custom Mounted Front Strut Bar, Elevated Clutch Stop, Polished Aluminum Roundel Shifter, AC Schnitzer Aluminum Pedal Set, Chrome Instrument Cluster Rings & Carbon Fiber Bezel, Crystal Clear Corners, OEM Clear Tail & Side Lights, Scalloped Headlight Trim, Custom 'is' Grill Badge, Alpine C43 Stereo Upgrade, Front Bumper Filler |
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09-01-2006, 02:59 AM
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Anyone?
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Every Boy Becomes A Man. A Fortunate Few Reverse The Process. 97 328is Black on Black 5 speed Sport Package, Short Arm Intake with ABS Molded Heat Shield, Custom Mounted Front Strut Bar, Elevated Clutch Stop, Polished Aluminum Roundel Shifter, AC Schnitzer Aluminum Pedal Set, Chrome Instrument Cluster Rings & Carbon Fiber Bezel, Crystal Clear Corners, OEM Clear Tail & Side Lights, Scalloped Headlight Trim, Custom 'is' Grill Badge, Alpine C43 Stereo Upgrade, Front Bumper Filler |
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09-02-2006, 06:50 PM
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Join Date: Dec 2003
Location: Bartlesville, OK
Posts: 156
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If I am right the expansion tank is basically just for overflow so if you made sure the hose stayed at or above the same height it is now you shouldn't have to worry about the whole system draining. As far as reusing the coolant, I don't see why you couldn't as long as your catch container is really clean.
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1993 318i manual |
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09-02-2006, 11:44 PM
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I'm with Bill
Join Date: Jun 2005
Location: Scottsville Va
Posts: 24,186
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Even if you remove the lower rad hose you will only drain the rad to the piont of the thermortat. The entire engine/system won't drain.
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Electrical problems on a pick-up will do that to a guy- 1990C4S |
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09-03-2006, 03:48 AM
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1997 BMW 328is M52 In-Line 6
