Overheating

[bongabilla]

So the blazer decided to overheat today........ When I was stuck in traffic it climbed to like 230 degrees, but once i got moving it immediately dropped back down to 170ish....... Im thinking maybe the thermostat, but what is yalls guess?

[Blind]

could be lots of things, first thing I would do personally is flush the coolant out and replace it, and replace the thermostat and radiator cap.

[Blue Bowtie]

I'm thinking that there is either inadequate coolant flow or inadequate air flow at low RPM.

[Mav06]

Kinda a silly idea but is your Fan cluch assembly on? I have seen a new Ford that it had come off and she was complaining of it being hot. lol
Just a thought

Matthew

[BlazerLT]

Fan clutch for sure.

[Mav06]

Got a quick question what is the normal operating Temp on a 1996 Blazer mines at like the first quater mark.

Matthew

[TheBrettster]

I had the same symptoms. Come to find out it was a crack in my rad. It didn't leak either.

[DelCoch]

Originally Posted by TheBrettster

I had the same symptoms. Come to find out it was a crack in my rad. It didn't leak either.

Where was the crack at that it didn't leak? Very interesting!

[TheBrettster]

Tell me about it. I've replaced cooler lines flushed the rad and replaced the cap along with the tstat and finally I gave up and sent it in and chevy told me i had a crack in my rad so they replaced it under warrenty.

[bongabilla]

alright thanks guys........ flushed out the fluid and put new coolant in plus i got all the air bubbles out of the system and now she runs like a champ

[BlazerLT]

sweetness, remember, replace the rad cap.