L-98 overheating, any ideas?
Burning Brakes
Joined: Feb 2000
Posts: 824
Likes: 2
From: Camden SC
Re: L-98 overheating, any ideas? (smacko)
Another item on the list of maybes could be the radiator itself. With that many miles, one could suggest excessive corrosion. Radiator shops can flow check, or they used to.
Pump, radiator, getting to the fun stuff.
dlmeyers 90 coupe zf6 3 speed shocks
Pump, radiator, getting to the fun stuff.
dlmeyers 90 coupe zf6 3 speed shocks
Le Mans Master
Joined: Jan 2003
Posts: 5,858
Likes: 7
From: Santa Maria CA
Re: L-98 overheating, any ideas? (TheCorvetteKid)
If you do find that it is a blown head gasket, decide whether you want to handle the job yourself or not. If you decide you are going to do it yourself, USE THIS FORUM!!!
Good luck. :thumbs:
Good luck. :thumbs:
If it is your head gasket it will not be cheap if you have it done by someone else.
I have done this job 2 times on my 86 L98. It's not very difficult as long as you have the required tools, plenty of space, keep everything in zip lock bags, and know what you need to remove and what you can leave alone.
Make sure your head gasket is not the problem to eliminate that out of the picture first.
Thread Starter
Instructor
Joined: May 2003
Posts: 155
Likes: 1
From: Jensen beach Florida
Re: L-98 overheating, any ideas? (THRLL RYD)
Thanks again for everyones input, this truly is an amazing forum...... I am pressure testing it this weekend. My mechanic thinks it is the head gasket.... if it is I am just going to rebuild, "FASTER, BETTER, STRONGER; WE HAVE THE TECHNOLOGY"
Again, thanks to everyone for their input.
Again, thanks to everyone for their input.
Burning Brakes
Joined: Jul 2003
Posts: 922
Likes: 1
From: Brisbane Queensland, Australia
Re: L-98 overheating, any ideas? (THRLL RYD)
Thanks again for everyones input, this truly is an amazing forum......
:iagree: :iagree: :iagree: :iagree: :iagree: :iagree: :iagree: :iagree:
Thread Starter
Instructor
Joined: May 2003
Posts: 155
Likes: 1
From: Jensen beach Florida
Re: L-98 overheating, any ideas? (THRLL RYD)
Found the problem, replaced the upper and lower rad hose and thermostat housing, also the heater valvea nd now everything is fine car runs cool as can be.... I want to thank everyone for their help on this,,, :cheers:
7th Gear
Joined: Feb 2004
Posts: 7
Likes: 0
From: misery ...
Re: L-98 overheating, any ideas? (THRLL RYD)
i had a camaro with the L98 in it (245 hp...is that same as vette?) and i had a major overheating problem. turned out i had a blown head gasket and coolant was leaking out at the front by the intake manifold. you could eventually see a little puddle of green goo there. my car would get so hot it wouldnt start again until it cooled down :nonod: if all your freebie fixes fail, then i would check the head gaskets. given you have 177k its very possible, as mine just had over 100k. more than likely you would be able to see a little coolant leak but depending on where its at, maybe not
i hope its something simple! turning your fans on earlier with a manual switch may just be a bandaid for a bigger problem, but i hope not
*edit* just saw your last post....glad its something small
[Modified by LIV2XLR8, 12:41 AM 2/17/2004]
i hope its something simple! turning your fans on earlier with a manual switch may just be a bandaid for a bigger problem, but i hope not
*edit* just saw your last post....glad its something small
[Modified by LIV2XLR8, 12:41 AM 2/17/2004]
Burning Brakes
Joined: Jul 2003
Posts: 922
Likes: 1
From: Brisbane Queensland, Australia
Re: L-98 overheating, any ideas? (THRLL RYD)
Found the problem, replaced the upper and lower rad hose and thermostat housing, also the heater valvea nd now everything is fine car runs cool as can be.... I want to thank everyone for their help on this,,, :cheers:
Good one!
:party: :party: :cheers:
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Advanced
Joined: Feb 2004
Posts: 64
Likes: 0
From: Gushikawa Japan
Re: L-98 overheating, any ideas? (smacko)
Along the same line as this thread...I just bought my first Corvette (91 L98), and I'm working out all of the "bugs" before we start mods in the comming months. The upper-left radiator fan comes on at about 170 degrees and stays on constantly, unless the car is being driven when the outside temp is low, then it will shut off until coolant temp rises again. Is this normal for this car to do this, or should both fans turn on and off as temp rises and falls? Thanks for any input.
Matt
Matt
Burning Brakes
Joined: Jul 2003
Posts: 922
Likes: 1
From: Brisbane Queensland, Australia
Re: L-98 overheating, any ideas? (Motorworx)
I'm not that familiar with your year model but sounds like the left fan is your 'main' fan and the right one is your auxillary one. (Does IT come on at all?) I'd be wiring both up together like I did. See: https://www.corvetteforum.com/techti...D=79&TopicID=2
Sounds to me like the operation is normal tho; fans shouldn't stay on ALL the time... :cheers:
Sounds to me like the operation is normal tho; fans shouldn't stay on ALL the time... :cheers:
Advanced
Joined: Feb 2004
Posts: 64
Likes: 0
From: Gushikawa Japan
Re: L-98 overheating, any ideas? (smacko)
Smacko,
Thanks a million! On my car, the relays were on the left side of the fan shroud. I didn't find the thermo switch (pressed for time, and not in the left head). Both relay coils go hot with ign on, and are switched with the ground, so I jumped the relay coil grounds. Both fans cycle on and off with the temp now.
Thanks,
Matt
Thanks a million! On my car, the relays were on the left side of the fan shroud. I didn't find the thermo switch (pressed for time, and not in the left head). Both relay coils go hot with ign on, and are switched with the ground, so I jumped the relay coil grounds. Both fans cycle on and off with the temp now.
Thanks,
Matt
Burning Brakes
Joined: Jul 2003
Posts: 922
Likes: 1
From: Brisbane Queensland, Australia
Re: L-98 overheating, any ideas? (Motorworx)
Smacko,
Thanks a million! On my car, the relays were on the left side of the fan shroud. I didn't find the thermo switch (pressed for time, and not in the left head). Both relay coils go hot with ign on, and are switched with the ground, so I jumped the relay coil grounds. Both fans cycle on and off with the temp now.
Thanks,
Matt
Thanks a million! On my car, the relays were on the left side of the fan shroud. I didn't find the thermo switch (pressed for time, and not in the left head). Both relay coils go hot with ign on, and are switched with the ground, so I jumped the relay coil grounds. Both fans cycle on and off with the temp now.
Thanks,
Matt
COOL! (Literally!) :lol:
