Compression tested ok. Any ideas??

2004 FORD FREESTAR
100,000 MILES
Avatar
BOWLDAY
  • MEMBER
  • 1 POST
04 Ford freestar 3.9L over 65 mph overheating, never at idle. just temp gauge run high let off gas, temp drops fast. New thermostat, temp sensor, overflow tank & cap. no mix on trans. and or oil.
Pump seems to be working new belt no leaks noticed to eye around engine or in cab thinking heater core. Water pump has small 8th in. less play side to side on pump shaft. oh yea compression tested ok.Started with finding cap cracked watched and its seems to bebacking up then cap relievs pressure antifreeze in tire rim wet uder overflow tank no rad. cap just overflow for fill. Any ideas??
Sep 7, 2012 at 1:57 AM
Advertisement
Avatar
ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
radiator may be clogged.

did they do a leak down test?? you can still have compression with a bad head gasket.

Roy
Sep 7, 2012 at 2:15 AM
Avatar
KHLOW2008
  • ✓ASE Certified Mechanic
  • 41,814 POSTS
  • ASE Certified Mechanic
Symptom indicates cooling efficiency and partially clogged radiator is the most likely and common cause.
Sep 7, 2012 at 2:30 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.