Coolant level sensor

**fury78** · 06-30-2009, 05:09 AM

Well, last April the "low coolant light" lighted. The level was perfect, so I ordered a new sensor.

After 3 months, and less than 3000 miles, the light is on again. I have checked the level on the radiator and it is ok, and the temperature of the car while running is like always.

Is it usual that this sensor fails so fast ???

My car is a ´99 Z28.

**davidz28guy** · 06-30-2009, 06:22 AM

normal, also make sure youve got all the air out of the system, if that doesnt work just unplug it and check the level from time to time

**NoscamaroSS** · 06-30-2009, 08:56 AM

^^x2

**JaycenK** · 06-30-2009, 01:14 PM

If you bought a replacement from someone other than GM the damn things are made in mexico, china, indonesa, ect.. Very common for that crap to fail but most of the time they work for a couple of years.

**Firebirdjones** · 06-30-2009, 04:06 PM

Originally Posted by JaycenK

If you bought a replacement from someone other than GM the damn things are made in mexico, china, indonesa, ect.. Very common for that crap to fail but most of the time they work for a couple of years.

Yep, very true. I've found alot of the GM stuff made in Mexico too,,,what a shame...Also keeping the antifreeze fresh is a big help too. If it starts to look nasty it's probably too late.

**fury78** · 06-30-2009, 10:33 PM

Thanks for your answer. I bought it from rockauto and the warranty has expired ( 90 days ). Do you know any web where buy an original replacement ?

**JoshieDoom** · 07-01-2009, 01:21 AM

Originally Posted by fury78

Thanks for your answer. I bought it from rockauto and the warranty has expired ( 90 days ). Do you know any web where buy an original replacement ?

Gm Parts Direct dot com

**99'CajunFirehawk157** · 07-01-2009, 01:04 PM

FWIW, last time my light came on, since my car is a garage queen, I took the old sensor out and just cleaned all the gunk off of it, (its original 1999) and even since the coolant was drained and flushed regularly the sensor was still gunked up, sure enough when I put it back in the light went off, YMMV.

**Firebirdjones** · 07-01-2009, 05:40 PM

Ya coolant gets more corrosive over time, and really play havic on those switches. Which is why it's imprortant to keep tabs on coolant condition. It can be tested to see how acidic it is and at what point it should be changed.

I generally flush and change mine every year but I'm anal about it. I don't care if the bottle says it's a 5 year antifreeze or not.

**fury78** · 07-01-2009, 10:52 PM

Thanks for all your answers. So, I will change the coolant and buy a new sensor....

**TA98** · 09-10-2009, 10:44 AM

Where is the sensor located

**fury78** · 09-10-2009, 11:15 PM

Originally Posted by T/A98

Where is the sensor located

In the radiator, upper part, right side ( passenger side )

**TA98** · 09-11-2009, 07:48 AM

Alright, thanks

**0rion** · 09-12-2009, 06:01 AM

I would flush that coolant and just try to clean your current sensor and see if that works. Not sure if you've ever done a flush/fill on your coolant but if you haven't then that coolant is 10 years old....time for some new.