volts in my radiator coolant, please HELP
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View Full Version : volts in my radiator coolant, please HELP 98tahoe 10-04-2008, 12:08 PM
j cAT 10-04-2008, 04:33 PM hello, i have a 98 tahoe 5.7L vortec. and I've gone through 6 radiators n 3 heating core valve this year alone, my mechanic dont know whats causing the problem, he have checked everything and found nothing until recently he found volts in the radiator coolant thats eating all the alumimun (ratiator n heating core valve) in the engine, he think its a loose ground somewhere in the SUV. i've taken it to get look at n nothing. have anyone ever heard of something like this? i really need help im running out of radiator money!!! do you have dexcool antifreeze in your coolant system ??? If not this the problem....you must have at least 50% dexcool GM approved ....If not keep buying radiators.... dump all that coolant or dirty water and flush/drain the entire engine coolant system use air to blow out the heater core...fill with the mixture at 50% with distilled water.... your coolant is conductive this is why its eating up your metal parts.... dexcool prevents freezing as well as engine damage I'm sure you have all the answers though. I really don't know what I'm talking about ! 98tahoe 10-08-2008, 11:20 AM do you have dexcool antifreeze in your coolant system ??? If not this the problem....you must have at least 50% dexcool GM approved ....If not keep buying radiators.... dump all that coolant or dirty water and flush/drain the entire engine coolant system use air to blow out the heater core...fill with the mixture at 50% with distilled water.... your coolant is conductive this is why its eating up your metal parts.... dexcool prevents freezing as well as engine damage I'm sure you have all the answers though. I really don't know what I'm talking about ! read again! Airjer_ 10-08-2008, 11:37 AM Has it been flushed? j cAT 10-08-2008, 08:43 PM read again! just as I suspected .....a total waste of my time.... maxwedge 10-08-2008, 08:58 PM Not a waste of time, stray voltage is entering your cooling system, the max reading should be .25v. There is a poor ground in one of the accessories, and the lack of solid ground is causing the stray voltage to enter the cooling system, causing corrosion of the heater core and/or radiator core. Check and solidify all the harness grounds throughout the underhood and nearby chassis ground, this should correct the problem. j cAT 10-08-2008, 09:12 PM Not a waste of time, stray voltage is entering your cooling system, the max reading should be .25v. There is a poor ground in one of the accessories, and the lack of solid ground is causing the stray voltage to enter the cooling system, causing corrosion of the heater core and/or radiator core. Check and solidify all the harness grounds throughout the underhood and nearby chassis ground, this should correct the problem. when different metals are submerged in a conductive solution this causes electrolysis....these coolants must be PH neutral and be of high resistance... when these coolants are not maintained to the correct level as per manufacturer spec's this is what occurs.. In a Mercrusier engine with the closed fresh water coolant system, for a boat used in the ocean,,, an extremely conductive solution runs through the heat exchanger .the heat exchanger has a zinc electrode that must be replaced every year....this protects the coolant system [heat exchanger ] from being destroyed by the electrical currents flowing between the metals... chuck's 10-08-2008, 10:03 PM Would connecting a wire from the rad to a ground help with eliminating some of the stray voltage?? chuck's maxwedge 10-08-2008, 10:59 PM Actually that is worse as it gives the voltage a path thru the radiator, the source must be located. sailon 10-11-2008, 03:17 PM I've got a 97 Tahoe. I am betting your problem is grounding. I am cleaning all the ground attachment points. I've cleared a bunch of problems already. The bolts were tight and everything looked good. I polished the terminals, washers, and attachment points. I found: 1 front of engine block 1 rear of engine block 1 on frame passenger side of engine 2 rear frame 1 inside next to steering column I'm still looking for more. Related Links Participate in thousands of discussions at AutomotiveForums.com! Registration is absolutely free. |
