Why Am I Overheating!!!!!

7374 said

Ok, Here Is The Scoop. I Pulled The Motor And Trans During My Front End Swap (which Now Is Complete And I'll Post Pictures In That Thread.) And Since I Dropped It Back In I Can't Get It To Run Cool.

While I Had It Out. I...

Had The Radiator Pressure Tested And Cleaned.
Changed Valve Cover Gaskets
Changed Oil Pan Gasket And Oil Pump
Changed Coil
Added Chrome Air Cleaner And Breather
Eliminated The Charcoal Canister.

Since Installing Back Into Car It Runs Hot. I First Put A New Thermostat In, And It Still Ran Hot So I Took The Thermostat Out Completely And Installed A New Water Pump. Still Running Hot.
Do My Vacuum Lines Have Anything To Do With Cooling Because Some Are Plugged Now.

Things That I Do Notice. The Top Hose Seems To Never Have Water Running Through It. While The Car Is Running (no Thermostat Remember) I Can Grab The Top Hose And Squish It Closed By Hand. This Tells Me No Water Is Going Through The Hose.

Is My Radiator Clogged? What Are Your Thoughts? Let Me Know!!

Click to expand...

Did you change anything with the fan shroud? Standard or clutched fan?
Why did you take the rad for pressure test and flush, just for precaution or something else?
Definately reinstall the thermostat, the large opening without thermostat will not keep moderate backpressure needed to keep a controlled flow and avoid hot and cold spots.
What is the temp outside when this happens. Did you change the rad cap immediately after the rad flush or did you try it with the old cap? If you say it's heating up but you can open the first stage of the cap with no pressure there's something wrong with the cap.
Did you test the strength of the antifreeze? Are you sick of all these questions? LOL
Food for thought, I once took a rad to get flushed due to heating problems in a 74 charger, the rad or heater core had a leak at some time before I got it and someone had poured stop leak in it. When the rad was put in the hot tank before flushing the heat and chemicals remelted the crap in the rad and it became plugged worse than it had started, I had to get another rad. Not necessarily your situation but when it comes to cooling problems you have to keep an open mind. Kev