radiators

[John ED Renstrom]

I was reading my book that came with the new radiator for the 92. it mentioned a condition I was unaware of begin a problem. electrologists due to a poor engine ground. the picture looked just like this one. back in the days before computers the ground cable was always attached to the engine block. this new stuff I guess is different. found the ground it was attached to the stud on the thermostat housing. when I took it off everything was clean and shinny. but when I removed the nut holding the housing on the stud came with it both sides the nut was rusted tight and the stud was close to the same condition. nether side would have a vary good ground . when I went to flush off the radiator the top set of fins melted in the water stream. see a lot of bad stuff come threw the radiator shop but nothing like this. so check those grounds out there you people with newer cars.

 

[Joe Rackov]

In the GM dealerships we used to see floor shift cables fail due to the woven copper ground straps being removed during engine or transmission work.

Electricity takes the path of least resistance and would ground through the cable, welding the inner cable to the outer housing metal liner or ferrules.

A sure sign would be to sell a cable over the counter and have the customer return with a broken cable a few days later. We would ask them if any recent major drivetrain work and usually they would answer yes to that. That was all that we needed to solve the breakage problem, sell them a ground strap too.