# 95 chevy overheating **URL:** \ **Category:** Maintenance/Repairs\ **Created:** [March 24, 2009, 2:26pm UTC](https://community.cartalk.com/t/95-chevy-overheating/28238 "2009-03-24T14:26:00Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![nutcase22](https://avatars.discourse-cdn.com/v4/letter/n/b5ac83/32.png) [@nutcase22](https://community.cartalk.com/u/nutcase22)\ **Post date:** [March 24, 2009, 2:26pm UTC](https://community.cartalk.com/t/95-chevy-overheating/28238/1 "2009-03-24T14:26:00Z")
95’ chevy 5.7 overheats at 2&3k rpm’s then goes dowm. New rad,temp sensor & water pump. Coolant level ok. Any thoughts? Head gasket? Intake leak? ---
**Author:** ![edb1961](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/edb1961/32/122_2.png) [@edb1961](https://community.cartalk.com/u/edb1961)\ **Post date:** [March 24, 2009, 3:11pm UTC](https://community.cartalk.com/t/95-chevy-overheating/28238/2 "2009-03-24T15:11:48Z")
Was the radiator pressure cap replaced along with the rest? Was all the air removed from the cooling system? Ed B. ---
**Author:** ![hellokit](https://avatars.discourse-cdn.com/v4/letter/h/6a8cbe/32.png) [@hellokit](https://community.cartalk.com/u/hellokit)\ **Post date:** [March 24, 2009, 4:00pm UTC](https://community.cartalk.com/t/95-chevy-overheating/28238/3 "2009-03-24T16:00:24Z")
You said the Barr’s Stop Leak stopped the head gasket leak; yet, you say the engine is still overheating. Maybe, the Barr’s didn’t stop the leak? ---
**Author:** ![nutcase22](https://avatars.discourse-cdn.com/v4/letter/n/b5ac83/32.png) [@nutcase22](https://community.cartalk.com/u/nutcase22)\ **Post date:** [March 24, 2009, 5:58pm UTC](https://community.cartalk.com/t/95-chevy-overheating/28238/4 "2009-03-24T17:58:07Z")
rad cap replaced, turns out my mechanic mis diagnosed, it wasn’t a clogged rad it was an internal head gasket leak forcing air into the cooling system causing air lock & the temp rise. This fixed the problem one can of barr’s permanant head gasket sealer this also worked on my 03 subaru 8 months later still working. ---
**Author:** ![oldschool](https://avatars.discourse-cdn.com/v4/letter/o/e19adc/32.png) [@oldschool](https://community.cartalk.com/u/oldschool)\ **Post date:** [March 24, 2009, 11:19pm UTC](https://community.cartalk.com/t/95-chevy-overheating/28238/5 "2009-03-24T23:19:58Z")
Its not air that gets forced into the coolant when a head gasket fails it hot combustion gases ---
**Author:** ![nutcase22](https://avatars.discourse-cdn.com/v4/letter/n/b5ac83/32.png) [@nutcase22](https://community.cartalk.com/u/nutcase22)\ **Post date:** [March 25, 2009, 3:35pm UTC](https://community.cartalk.com/t/95-chevy-overheating/28238/6 "2009-03-25T15:35:52Z")
ok combustion gases I’m not a mechanic. I’t did it again acts like the thermostat is sticking even after it was replaced,temp gauge rises almost to 260 air purged rad,temp sensor,all replaced, I’m stumped. ---
**Author:** ![Joseph\_E\_Meehan](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/joseph_e_meehan/32/21_2.png) [@Joseph\_E\_Meehan](https://community.cartalk.com/u/Joseph_E_Meehan)\ **Post date:** [March 25, 2009, 4:34pm UTC](https://community.cartalk.com/t/95-chevy-overheating/28238/7 "2009-03-25T16:34:23Z")
You said the Barr’s Stop Leak stopped the head gasket leak; yet, you say the engine is still overheating. Maybe, the Barr’s didn’t stop the leak? Or maybe the Barr’s has clogged up something and has caused a new problem. ---
**Author:** ![nutcase22](https://avatars.discourse-cdn.com/v4/letter/n/b5ac83/32.png) [@nutcase22](https://community.cartalk.com/u/nutcase22)\ **Post date:** [March 30, 2009, 2:02am UTC](https://community.cartalk.com/t/95-chevy-overheating/28238/8 "2009-03-30T02:02:20Z")
I’ve tried running the engine with the rad cap off someone said it should purge itself but the air is still there, I can here it going thru the heater core. I was told by a mechanic that they use a vacum pump of some kind to draw the coolant and purge the air that way. Ever heard of that? Anyway I can’t seem to get the air out. ---
**Author:** ![nutcase22](https://avatars.discourse-cdn.com/v4/letter/n/b5ac83/32.png) [@nutcase22](https://community.cartalk.com/u/nutcase22)\ **Post date:** [March 30, 2009, 2:13am UTC](https://community.cartalk.com/t/95-chevy-overheating/28238/9 "2009-03-30T02:13:04Z")
Nothing coming out the exhaust, steam ect. I don’t think it’s a head gasket leak, air is still in the system can’t get it out.