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2003 Chevy Cavalier, 2.2 Ecotec has no heat.

2003 Chevy Cavalier, 2.2 Ecotec, 97K. My question is, the heat has been very poor for a year now, the dash thermommeter only comes up to about 1/8, usually it would read 1/2, i think that's close to 190F. I also noticed that the radiator fill reservoir cap has some broken down coolant on the underside, like an orange-yellow clumpy cream. The reservoir is a touch low, and i filled it, but the car just will not come up to temperature or blow heat. The only other issue i've noticed that may or may not be related to this is that my cooling fan runs non-stop, so says my mechanic. Is this a stuck thermostat? A coolant sensor? A clogged heater core? Poor coolant?(always used orange dex-cool) I'd like some ideas before i start ordering parts to tackle this issue.

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Posted on Jan 02, 2017

  • 111 Answers

SOURCE: I have a 2004 Chevy

Hi I will try and help u if i can
Usually a shut down problem which happens at temperature is caused by an electronic part
breaking down.
I would suspect the coil pack ( usually a crack creates an open circuit, that is the crack opens up
when in your case 195 deg and closes back up when cooled down
I`m not totally familiar with your gm product but i know they used to have a problem with an egnition module ( but not sure if this is fitted to your car )
I hope i have been of some help to you
John ( South Wales UK )

Posted on Aug 10, 2011

Testimonial: "Your right ! it was an electrical part that closed back up after the engine cooled down! crank sensor ! easy fix ! except the 1st new one was faulty !"

  • 68 Answers

SOURCE: I have a 1997 Chevy

You can use grren or the dex-cool... as long as you change and flush the system or there's a new kind that looks almost like a *** color that i heard from quite a few mechanics that say its compatiable with both.

Posted on Aug 09, 2011

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