Normal Operating Temperature
Thread Starter
Intermediate
Joined: Feb 2004
Posts: 42
Likes: 0
From: Dallas Georgia
Normal Operating Temperature
Although my 94 is not "over heating", it seems to run hot, between 250 and 255 degrees. Is this near the normal operating temp when standing still or in heavy traffic? Your replies are appreciated.
Team Owner
Joined: Sep 2001
Posts: 62,137
Likes: 1,727
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Re: Normal Operating Temperature (Pioneer)
250-255 is 'hot' for aluminum heads.
Check to see if your thermostat is sticking, the temps should stop rising at 180 for a while.
Clean the space between your radiator and condensor, the only way to do it is to remove the radiator shroud.
Flush the radiator and refill.
Check to see if the fans are working, the main fan should come on at about 228F. If they dont work, check the relays that are beside the shroud.
If all that doesnt work you either have a water pump problem or something more serious.
Check to see if your thermostat is sticking, the temps should stop rising at 180 for a while.
Clean the space between your radiator and condensor, the only way to do it is to remove the radiator shroud.
Flush the radiator and refill.
Check to see if the fans are working, the main fan should come on at about 228F. If they dont work, check the relays that are beside the shroud.
If all that doesnt work you either have a water pump problem or something more serious.
Team Owner
Joined: Sep 2003
Posts: 25,295
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From: I'm the walkin dude I can see all of the world...
St. Jude Donor '03
Re: Normal Operating Temperature (Pioneer)
Although my 94 is not "over heating", it seems to run hot, between 250 and 255 degrees. Is this near the normal operating temp when standing still or in heavy traffic? Your replies are appreciated.
Thread Starter
Intermediate
Joined: Feb 2004
Posts: 42
Likes: 0
From: Dallas Georgia
Re: Normal Operating Temperature (VictorRussell'92)
It is the coolent temp. Oil temp is ok. I appreciate the comments. I thought that these temps were not normal, and I can only imagine when this Atlanta weather reaches the muggy 90's this summer. :eek:
Burning Brakes
Joined: Nov 2003
Posts: 935
Likes: 2
From: Beverly, NJ
Re: Normal Operating Temperature (Pioneer)
Although my 94 is not "over heating", it seems to run hot, between 250 and 255 degrees. Is this near the normal operating temp when standing still or in heavy traffic? Your replies are appreciated.
:cheers:
Thread Starter
Intermediate
Joined: Feb 2004
Posts: 42
Likes: 0
From: Dallas Georgia
Re: Normal Operating Temperature (vvv90)
I am being told that it is simply the water pump. Could it be that simple? Being simply a Vet lover and not a mechanic, I figured my buds on the board will know.
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Re: Normal Operating Temperature (Pioneer)
NO ! The only thing that is "simple" is the suggester. When the belt turns the pulley, the pulley turns the shaft. When the shaft turns, the impeller turns. When the impeller turns, it pumps water. Water pumps do not degrade. They fail and/or they leak. Good luck, and...
RACE ON!!!
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Team Owner
Joined: Sep 2001
Posts: 62,137
Likes: 1,727
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Re: Normal Operating Temperature (Pioneer)
I am being told that it is simply the water pump. Could it be that simple? Being simply a Vet lover and not a mechanic, I figured my buds on the board will know.
In which case, you must replace the WP IMMEDIATELY, or else you risk blowing your Optispark and doubling the cost of this repair.
Race Director
Joined: Feb 2002
Posts: 11,268
Likes: 14
From: Honolulu, HI
Re: Normal Operating Temperature (CFI-EFI)
When the belt turns the pulley, the pulley turns the shaft.
Is it leaking coolant or making any grinding noises at the front of the engine?
Le Mans Master
Joined: Oct 2003
Posts: 6,130
Likes: 2
From: seattle WA
Re: Normal Operating Temperature (vvv90)
To Hot, are your fan(s) comming on?and at what temp (could be a fan relay problem), your system might need burping! (could be air in the system),Yes by all means check for debris, they really do get trashed, you might want to check some of the thermostat threads on the forum-this is one of the major complaints on the forum, lots of good info. :rolleyes: :chill:
Le Mans Master
Joined: Dec 2000
Posts: 7,839
Likes: 22
From: San Diego, Ca
Re: Normal Operating Temperature (Pioneer)
'94 fan control is from the a/c pressure switch - which turns on both fans and will cycle them on and off somewhere in a range of 230 psi on/170 psi off - or the coolant temp sensor if the a/c is off. If it's off, primary fan comes on at 219 and switches off at 208; secondary fan is commanded on at 228 and off at 217, so if it's at 250, both fans should be cranking which you can probably verify in your driveway. On the other hand, if you're relying on the gauge, you might want to scan it to determine what the coolant temp sensor and pressure switch are showing before you start replacing anything.
Thread Starter
Intermediate
Joined: Feb 2004
Posts: 42
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From: Dallas Georgia
Re: Normal Operating Temperature (SunCr)
Just a TAD frustrated here :mad I appreciate all of the advise. I have printed them out for the obvious lane-brain that will be working on the LT1 this week. I suppose the saving grace is that it's not costing anything at this point since I'm within the 30 day CarMax grace period.
According to them, the water pump was replaced last week and it runs great. However, after driving for a while and coming to a stop behind this stupid Atlanta traffic, it approaches and maintaines 250 degrees until I start back up.
I agree! Even with my limited knowledge, I was thinking it's the fans as well. Lord help me before I loose my religion. Maybe your suggestions will enlighten this elementary school mechanic. :reddevil
According to them, the water pump was replaced last week and it runs great. However, after driving for a while and coming to a stop behind this stupid Atlanta traffic, it approaches and maintaines 250 degrees until I start back up.
I agree! Even with my limited knowledge, I was thinking it's the fans as well. Lord help me before I loose my religion. Maybe your suggestions will enlighten this elementary school mechanic. :reddevil
