SPONSORED LINKS

My Transport is overheating, how do I fix?

Tiny
TOBARQ1
  • MEMBER
  • 1998 PONTIAC TRANSPORT
  • 102,000 MILES
I have already replaced the thermostat and the radiator cap. The water pump is circulating water but it is still red lining. I hear a hissing coming from the side of the motor that the thermostat is on, but it sounds like it is further in, closer to the firewall. I don't see any steam and I don't see any water dripping from underneath. What could it be?
SPONSORED LINKS
Saturday, June 16th, 2012 AT 4:12 AM

5 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
You sure the thermostat is installed correctly-if so bleed the cooling system if it continues block and pressure test the system
Was this
answer
helpful?
Yes
No
Saturday, June 16th, 2012 AT 9:44 AM
Tiny
TOBARQ1
  • MEMBER
  • 3 POSTS
Thanks for your reply. And yes the thermostat is installed correctly. I have bled the cooling system. However I have not pressure tested it. I don't have a way to do that. The hissing sound is coming from the backside of the motor and it looked like the shift linkage on the tranny was wet. I could not see well enough to pinpoint the location. Is there a pressure release in the block in that location? Or might it be the rear head gasket?
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Monday, June 18th, 2012 AT 10:05 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
You can rent a cooling system pressure tester. Could be from a leaky intake manifold, cylinder head or a feeze plug
Was this
answer
helpful?
Yes
No
Wednesday, June 20th, 2012 AT 6:56 AM
Tiny
TOBARQ1
  • MEMBER
  • 3 POSTS
How would I, other than a pressure test, pinpoint which of the 3 it is?
Was this
answer
helpful?
Yes
No
Wednesday, June 20th, 2012 AT 7:23 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Get a block chek-a chemical tester that changes color if there's a combustion leak into the cooling system-check at autozone
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Wednesday, June 20th, 2012 AT 11:09 PM

Please login or register to post a reply.

Related Engine Overheat Content

Is Your Engine Cool Enough to Check?
VIDEO
Is Your Engine Cool Enough to Check?
Instructional repair video
Overheating Symptoms
GUIDE
Overheating Symptoms
An overheating engine is never a good thing to have happen. If the problem is caught quickly you can save the headache of a major engine repair. Knowing the information from...
VIEW MORE

Sponsored links