# I don't know what is wrong with my car, please help

**URL:** <https://community.cartalk.com/t/i-dont-know-what-is-wrong-with-my-car-please-help/42982>\
**Category:** Maintenance/Repairs\
**Tags:** chevrolet, cavalier\
**Created:** [January 22, 2010, 12:41am UTC](https://community.cartalk.com/t/i-dont-know-what-is-wrong-with-my-car-please-help/42982 "2010-01-22T00:41:43Z")\
**Posts on this page:** 6\
**Page:** 1

<div class="post-metadata">

**Author:** ![briibabiiyy](https://avatars.discourse-cdn.com/v4/letter/b/7ab992/32.png) [@briibabiiyy](https://community.cartalk.com/u/briibabiiyy)\
**Post date:** [January 22, 2010, 12:41am UTC](https://community.cartalk.com/t/i-dont-know-what-is-wrong-with-my-car-please-help/42982/1 "2010-01-22T00:41:43Z")

</div>

We replaced the relay switch, we replaced the fan motor, thermostat, and by passed the fan switch, and it still over heats with cap on, is good with cap off. If you know what the problem is please answer this.  
  
  
  
 Thank You.  
  
 It is a Chevy Cavalier 1994 3.1V6

---

<div class="post-metadata">

**Author:** ![teenchanic09](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/teenchanic09/32/1210_2.png) [@teenchanic09](https://community.cartalk.com/u/teenchanic09)\
**Post date:** [January 22, 2010, 12:53am UTC](https://community.cartalk.com/t/i-dont-know-what-is-wrong-with-my-car-please-help/42982/2 "2010-01-22T00:53:10Z")

</div>

could be a clogged radiator that cant handle high pressure not sure try getting a flush

---

<div class="post-metadata">

**Author:** ![briibabiiyy](https://avatars.discourse-cdn.com/v4/letter/b/7ab992/32.png) [@briibabiiyy](https://community.cartalk.com/u/briibabiiyy)\
**Post date:** [January 22, 2010, 12:59am UTC](https://community.cartalk.com/t/i-dont-know-what-is-wrong-with-my-car-please-help/42982/3 "2010-01-22T00:59:37Z")

</div>

hey thank you. we are going to try that monday. thanks 😃

---

<div class="post-metadata">

**Author:** ![waterboy](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/waterboy/32/764_2.png) [@waterboy](https://community.cartalk.com/u/waterboy)\
**Post date:** [January 22, 2010, 1:04am UTC](https://community.cartalk.com/t/i-dont-know-what-is-wrong-with-my-car-please-help/42982/4 "2010-01-22T01:04:18Z")

</div>

are you experiencing loss of coolant?

---

<div class="post-metadata">

**Author:** ![pleasedodgevan2](https://avatars.discourse-cdn.com/v4/letter/p/ad7895/32.png) [@pleasedodgevan2](https://community.cartalk.com/u/pleasedodgevan2)\
**Post date:** [January 22, 2010, 5:44am UTC](https://community.cartalk.com/t/i-dont-know-what-is-wrong-with-my-car-please-help/42982/5 "2010-01-22T05:44:45Z")

</div>

Corroded radiator fins, many are gone, inspect from rear. If over 5% are rusted away, the radiator is bad. Don’t even flush the old one unless it passes inspection. Check it from the rear. Good with cap off? Could be a blown head gasket.

---

<div class="post-metadata">

**Author:** ![Docb969](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/docb969/32/1664_2.png) [@Docb969](https://community.cartalk.com/u/Docb969)\
**Post date:** [January 22, 2010, 2:12pm UTC](https://community.cartalk.com/t/i-dont-know-what-is-wrong-with-my-car-please-help/42982/6 "2010-01-22T14:12:53Z")

</div>

Find a radiator shop in your area, see if they still rod radiators, if so, take it to them and have it rodded. You may have to replace the core. This will be cheaper then replacing the whole radiator. Also try installing a new cap before going to the shop, the old one may be weak and be all that’s wrong. Good Luck.