Running hot - timing, or time for a flush
Thread Starter
Burning Brakes
Joined: Nov 2001
Posts: 1,191
Likes: 1
Running hot - timing, or time for a flush
Ladies and Gentlemen,
I've been following the posts regarding our cars' tendency to run hot, and I'm wondering if any of you have an opinion regarding what my car (Miranda) needs in this regard. She runs hot on the highway in summer weather, but in cooler weather and at slower speeds in hot weather she runs closer to normal.
I'm thinking it's time to flush 25 years worth of crud from the cooling passages, and I've got 2 jugs of the Prestone flush ready to go. It will be block drain plugs and all for this job, and some fresh Dexcool to go back in after I've flushed all the poopie out.
It needs to be flushed anyway, since it's been a while since I've changed the coolant. The green stuff still looks healthy, but it's gotta go.
But, would the info above lead you to conclude that timing is the real heat causing culprit? Please let me know your thoughts. Thanks for your time. GM
I've been following the posts regarding our cars' tendency to run hot, and I'm wondering if any of you have an opinion regarding what my car (Miranda) needs in this regard. She runs hot on the highway in summer weather, but in cooler weather and at slower speeds in hot weather she runs closer to normal.
I'm thinking it's time to flush 25 years worth of crud from the cooling passages, and I've got 2 jugs of the Prestone flush ready to go. It will be block drain plugs and all for this job, and some fresh Dexcool to go back in after I've flushed all the poopie out.
It needs to be flushed anyway, since it's been a while since I've changed the coolant. The green stuff still looks healthy, but it's gotta go.
But, would the info above lead you to conclude that timing is the real heat causing culprit? Please let me know your thoughts. Thanks for your time. GM
Melting Slicks
Joined: Aug 2000
Posts: 2,310
Likes: 1
Re: Running hot - timing, or time for a flush (mayberg)
"But, would the info above lead you to conclude that timing is the real heat causing culprit?"
Have you reset your timing recently?
I have not on mine, and I've noticed that the temp is up a bit (5 to 10 degrees -- bringing a little over 200 degrees) this year. It's been a little over two years since I changed the fluid.
I plan on flushing the system, changing the fluid & thermostat, and hopefully watching the temperature go back to below 200 degrees.
I'll be posting my results. Good Luck!
Have you reset your timing recently?
I have not on mine, and I've noticed that the temp is up a bit (5 to 10 degrees -- bringing a little over 200 degrees) this year. It's been a little over two years since I changed the fluid.
I plan on flushing the system, changing the fluid & thermostat, and hopefully watching the temperature go back to below 200 degrees.
I'll be posting my results. Good Luck!
Drifting
Joined: Jun 2001
Posts: 1,809
Likes: 0
Re: Running hot - timing, or time for a flush (mayberg)
Also might want to check that the seals around the fan shourd are still in place. One way to do it is by placing a light under the car and look where the light is coming through.
The sealing makes a big difference for the description your giving for your heating problem.
The sealing makes a big difference for the description your giving for your heating problem.
Race Director
Joined: Dec 2000
Posts: 19,304
Likes: 85
From: San Diego CA
Re: Running hot - timing, or time for a flush (EarnIt)
If the timing is too far advanced, the engine will ping, too far retarded and the temp will climb. It is generally safer to leave the timing a bit retarded, since engine damage is not likely to occur.
Drifting
Joined: Mar 2002
Posts: 1,877
Likes: 39
From: cincinnati ohio
Cruise-In V Veteran
Re: Running hot - timing, or time for a flush (mayberg)
Had the same problem running hot on the highway 210 degrees and up.I installed new fan clutch now car runs 190 in 95 degree temps.
