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A collection of helpful articles based on reader submissions
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Below is a collection of Jim Grant's Tech Tips sorted by Vehicle Make. These Tech Tips were answers to questions submitted to Jim by ALLDATAdiy.com users over the course of many years.
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  Jim Grant's Tech Tips

'94 Pontiac Grand Am, Coolant Level Warning Light

Q: I drained the antifreeze on my '94 Pontiac Grand Am by taking the bottom hose off the radiator on the passenger side. Then I put it back on and took off the hose from the jug that connects to the radiator hose. I then took the water hose and ran water through that little hose and it ran water back into the Jug. To make a long story short the coolant light won't turn off. What can I do to get this light to turn off? I would appreciate your help.

Thank You, Granddad

A: After all this time I thought we were the only ones that happens to! The quickest fix is to remove the coolant reservoir and turn it upside down and shake it. There is a little chamber with a little float that looks like a disk or puck that floats up with the coolant level. Next to this chamber is a sensor that reports the location of the float. The problem is that sediment collects in the chamber and causes the float to stick at the bottom of the chamber even when the coolant is at the correct level. The result? A low coolant level warning light. A good rinse and shake should free up the sticking float and turn your low coolant warning light off.

 
     
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