one seems high and one low
Question about oil temp.
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Joined: Dec 2001
Posts: 69
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From: Hannibal, Missouri
Question about oil temp.
My oil temp ususally runs about 230-240 but my coolant temp only reads about 125-150. (1984 corvette)This doesn't seem right to have such a difference. I figure my coolant temp sensor could be bad but should the oil temp be that high? Anybody have any idea how to make it run cooler?
Also, another problem, When the car is hot and I shut it off, I have to wait about 5 minutes before it will restart. It will crank but won't start. After a few minutes, it will fire right up. There have been a couple of times it has died on me(usually after sitting and idling for a few minutes like in line at a fast food window) and I have to wait a few minutes before it will restart. Any ideas? There's almost nothing worse than having your corvette die in the street and have to wait for it to restart. :o
Also, another problem, When the car is hot and I shut it off, I have to wait about 5 minutes before it will restart. It will crank but won't start. After a few minutes, it will fire right up. There have been a couple of times it has died on me(usually after sitting and idling for a few minutes like in line at a fast food window) and I have to wait a few minutes before it will restart. Any ideas? There's almost nothing worse than having your corvette die in the street and have to wait for it to restart. :o
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
I would think you have a temp sensor problem... Considering the age of your car, I would replace both with new. Also, check the circuit, there might be a short that is not helping things.
hot start problem... hm... when was the last major tune up? I know those throttle bodies can get really queer when they are old.
change the fuel filter... see where that takes you. If the car is not driven frequently, then it will collect stuff in the filter.
hot start problem... hm... when was the last major tune up? I know those throttle bodies can get really queer when they are old.
change the fuel filter... see where that takes you. If the car is not driven frequently, then it will collect stuff in the filter.
Team Owner
Joined: Sep 2001
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From: Athens AL
C7 of the Year - Unmodified Finalist 2021
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Bad coolant sensor, definitely.
Those oil temps are not a problem, however they are normal for C4s. You probably still need to clean the space between condensor and radiator to get those down a little.
Usually, hot start problems are coming from bad injectors leaking into the cylinder.
Those oil temps are not a problem, however they are normal for C4s. You probably still need to clean the space between condensor and radiator to get those down a little.
Usually, hot start problems are coming from bad injectors leaking into the cylinder.
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
The oil temps are acceptable, maybe a little on the high side. The water temp CANNOT be correct. The gauge sending unit is in the left side cylinder head, between the #1 and #3 spark plugs. Check it. Have you done any diagnostics on the no-start condition? Check for spark and fuel. I have a thought or two on the subject, but there is no point in testing components that can't be contributing to the problem.
RACE ON!!!
RACE ON!!!
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Just an observation. My 88 runs a bout a 20 degree difference between oil and water Temp, oil being the higher!Cruising coolant is 182 to 185 and oil is 195 to 205. In the hills or under high rev conditions through twisteies, oil will get to 210 to 215. Coolant stays the same
seeya
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