is this a bad water pump, a bad sensor, or LT1 cooling system just suck??
09-01-2003, 02:52 PM
#1
Registered User
Thread Starter
Join Date: Apr 2002
Location: LA, So Cal
Posts: 1,453
is this a bad water pump, a bad sensor, or LT1 cooling system just suck??
well, i went to vegas for the weekend. and my car has problem cooling its self down. i reprogram the low cooling fans to start at 185*. but the problem is with the AC on. on the way to vegas there was a slight traffic jam going uphill. and i can only go 25 MPH on stop and go traffic going up hill. and my coolant temp went up slowly (in about 15 minutes) passed the half mark gauge. also in vegas, about 100*, with the AC on the coolant temp slowly rising if i drive on the city. now my question is, is my water pump going south again? or my coolant temp sensor is nearly dead?? or LT1 cooling system just plain suck??
also, will a high speed fans turns on when the AC's on?? thanks a lot
also, will a high speed fans turns on when the AC's on?? thanks a lot
09-01-2003, 03:01 PM
#2
Registered User
Join Date: Aug 2003
Location: dickson
Posts: 26
simple but affective
We just put a opti-spark on so the water pump and radiator was drain. Before we put it in, my car would run hot above 220. Before I had replaced the coolant temp sensor, thermastat, etc. Yesterday when we put the anti-freeze and water, my temp went to 260! I immediately shut the engine off. My mechanic said it had air in the lines. yesterday we kept adding anti-freeze, he turned the screw that clears the air out of the line.
My car not dropped in temperature, but I can run the ac now and it runs alot cooler. Just a thought. Good luck!
My car not dropped in temperature, but I can run the ac now and it runs alot cooler. Just a thought. Good luck!
Last edited by thebadone; 09-01-2003 at 03:05 PM.
09-01-2003, 03:04 PM
#3
Registered User
Thread Starter
Join Date: Apr 2002
Location: LA, So Cal
Posts: 1,453
Re: simple but affective
Originally posted by thebadone
We just put a opti-spark on so the water pump and radiator was drain. Before we put it in, my car would run hot above 220. I replaced the coolant temp sensor, thermastat, etc. When we put the anti-freeze and water, my temp went to 260! I immediately shut the engine off. My mechanix said it had air in the lines. We kept added anti-freeze, he turned the screw that clears the air.
My car not dropped in temperature, but I can run the ac now and it runs alot cooler. Just a thought. Good luck!
We just put a opti-spark on so the water pump and radiator was drain. Before we put it in, my car would run hot above 220. I replaced the coolant temp sensor, thermastat, etc. When we put the anti-freeze and water, my temp went to 260! I immediately shut the engine off. My mechanix said it had air in the lines. We kept added anti-freeze, he turned the screw that clears the air.
My car not dropped in temperature, but I can run the ac now and it runs alot cooler. Just a thought. Good luck!
09-01-2003, 03:09 PM
#4
Registered User
Join Date: Aug 2003
Location: dickson
Posts: 26
getting hot!
Mine has a new coolant temp, thermastat, etc. and still got hot. So make sure you clear the air out of the lines. It is a screw, pretty obvious, sitting on the line that runs directly to your radiator. Sorry you had to put in new water pump on. We put mine back on yesterday ( on a sunday yuck!). Good luck!
09-01-2003, 03:11 PM
#5
Registered User
Thread Starter
Join Date: Apr 2002
Location: LA, So Cal
Posts: 1,453
Re: getting hot!
Originally posted by thebadone
Mine has a new coolant temp, thermastat, etc. and still got hot. So make sure you clear the air out of the lines. It is a screw, pretty obvious, sitting on the line that runs directly to your radiator. Sorry you had to put in new water pump on. We put mine back on yesterday ( on a sunday yuck!). Good luck!
Mine has a new coolant temp, thermastat, etc. and still got hot. So make sure you clear the air out of the lines. It is a screw, pretty obvious, sitting on the line that runs directly to your radiator. Sorry you had to put in new water pump on. We put mine back on yesterday ( on a sunday yuck!). Good luck!
09-01-2003, 03:28 PM
#7
Registered User
Thread Starter
Join Date: Apr 2002
Location: LA, So Cal
Posts: 1,453
Re: running hot
Originally posted by jakesnake123957
Ensure both of your fans on with ac on,
Ensure both of your fans on with ac on,
Originally posted by jakesnake123957
check that no trash or dirt blocking air flow thru your radiator
check that no trash or dirt blocking air flow thru your radiator
09-01-2003, 03:28 PM
#8
Registered User
Join Date: Aug 2003
Location: dickson
Posts: 26
getting hot!
Once you get the radiator and water pump drained, you will need to clear in air out of the line. Watch the temp it will shoot up immediately or at least mine did. I assume that yours will also. He turned the screw and let the air out, and you can see it. We watch the level and then the thermastat open and we added some more antifreeze, and put the lid on, again he turned the screw and some more air came out. He kept doing it until no more air or pressure was coming out of the line. I asked everyone what was causing mine temp to shoot up, and NOONE even mentioned that air was in the line. Everyone kept suggesting other things, thermastat, coolant temp sensor. Hoped it helped
09-01-2003, 03:32 PM
#9
Registered User
Thread Starter
Join Date: Apr 2002
Location: LA, So Cal
Posts: 1,453
Re: getting hot!
Originally posted by thebadone
Once you get the radiator and water pump drained, you will need to clear in air out of the line. Watch the temp it will shoot up immediately or at least mine did. I assume that yours will also. He turned the screw and let the air out, and you can see it. We watch the level and then the thermastat open and we added some more antifreeze, and put the lid on, again he turned the screw and some more air came out. He kept doing it until no more air or pressure was coming out of the line. I asked everyone what was causing mine temp to shoot up, and NOONE even mentioned that air was in the line. Everyone kept suggesting other things, thermastat, coolant temp sensor. Hoped it helped
Once you get the radiator and water pump drained, you will need to clear in air out of the line. Watch the temp it will shoot up immediately or at least mine did. I assume that yours will also. He turned the screw and let the air out, and you can see it. We watch the level and then the thermastat open and we added some more antifreeze, and put the lid on, again he turned the screw and some more air came out. He kept doing it until no more air or pressure was coming out of the line. I asked everyone what was causing mine temp to shoot up, and NOONE even mentioned that air was in the line. Everyone kept suggesting other things, thermastat, coolant temp sensor. Hoped it helped
but i might do it again, just to check...
09-01-2003, 07:20 PM
#11
Registered User
Join Date: Jan 2002
Location: Goose Creek, SC
Posts: 275
Re: Re: getting hot!
Originally posted by TMDZ28
how many times do you have to bleed the system?? thanks
how many times do you have to bleed the system?? thanks
09-01-2003, 10:24 PM
#12
Registered User
Join Date: Dec 1969
Location: Little Rock, AR
Posts: 27,709
Halfway on the gauge is nothing to get concerned about.
High speed fans do not automatically come on with the a/c. High speed is temperature dependent.
Visually check to be sure both your fans are working.
High speed fans do not automatically come on with the a/c. High speed is temperature dependent.
Visually check to be sure both your fans are working.
09-02-2003, 12:40 AM
#14
Registered User
Join Date: Jul 2003
Location: Hawaii
Posts: 1,103
My engine block/coolant temp is at 185* farenheit when the needle is just a hair below the midway mark. If your meters are calibrated anything like mine then the Midway Mark is where the OEM Thermostat is supposed to open up. So in my car i would get close to the 3rd mark by the time the Coolant temp is in the 220 degrees..
My fans used to come on at 212*degrees... the slow fan that is
I now have my slow speed fan come on at 185degree farenheit. for fuel economy since I dont know at what point the car would switch back to open loop.
If someone know at what themp it switchs to close loop operation I would greatly apreciate if you share with me... I want to keep my fans coming on about 10 to 15 degrees above that point.
Marvin
My fans used to come on at 212*degrees... the slow fan that is
I now have my slow speed fan come on at 185degree farenheit. for fuel economy since I dont know at what point the car would switch back to open loop.
If someone know at what themp it switchs to close loop operation I would greatly apreciate if you share with me... I want to keep my fans coming on about 10 to 15 degrees above that point.
Marvin
09-02-2003, 01:39 PM
#15
Registered User
Thread Starter
Join Date: Apr 2002
Location: LA, So Cal
Posts: 1,453
Originally posted by shoebox
Halfway on the gauge is nothing to get concerned about.
High speed fans do not automatically come on with the a/c. High speed is temperature dependent.
Visually check to be sure both your fans are working.
Halfway on the gauge is nothing to get concerned about.
High speed fans do not automatically come on with the a/c. High speed is temperature dependent.
Visually check to be sure both your fans are working.
will the high speed fans turns on when the temp. is rising to a certain point even with the AC's on??
thanks shoebox
thanks everyone
