Question about 1999 Ford Taurus
Hello! There is a Technical Service Bulletin (TSB) #1-15-6 that addresses electrolysis in the cooling system...If this TSB has been installed on your vehicle...There will be a tag on the drivers door with the TSB #...Also, a restrictor will be inserted into the heater core inlet...Lets eliminate this right up front...Check to see if this TSB is installed...
The vehicle does have a closed system...Electrolysis, coupled with air in the system is the likely culprit...Replacing the metal lines with rubber will increase electrolysis, which turns the coolant to a "goop"...Coolant flow is adequate when being pumped, but when you shut the engine off the goop blocks the system...Pressure is high...So coolant spews out...
I'll send a test to determine the level of electrolysis...You will need a DIGITAL multimeter...We'll fix the the electrolysis...flush the system...replace the thermostat...And properly bleed the air...Send comment about TSB and do yo have the digital meter...Guru...........Saailer
Posted on Aug 19, 2010
Testimonial: "No, TSB is not installed. No label, and there was nothing in the heater core inlet when I re-did the system. I own a DMM."
Same Problem. I Fixed by..
Backflushed heater core at firewall.
Emptied and ran water and dish soap X 1 week, let it spew, Drained the murky no longer soapy water, Repeated backflush of heater core (nasty again). Drained system completely, replaced heater lines on firewall (Dealer $130), replaced bottle (aftermarket $30), replaced thermostat, refill 50/50 same problem.
Hooked up OBD2, drove around watched temps. Fans not coming on. Replaced BOTH sensors near thermostat, these are different, one os for OBC one is for fans, reflush yet again and fill.
NOTE: Use DISTILLED WATER if mixing 50/50 yourself. Also found ground off under battery brace to block from cables, probably the cause of the original corrosion.
Double check both fans make sure they spin. If you hook the sensors backwards the fans will run all the time, ODB reports 300F+ temp. I also dropped the thermostat to 180, but I'm in Phoenix.
Now to the !@#$%^ transmission cooler nightmare.
Posted on Oct 28, 2010
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Posted on Jan 02, 2017
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