| Author |
Message |
Steve Tissot (68.193.164.62)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, January 17, 2004 - 1:12 pm: | |
Will high oil pressure give high water temp? The faster the engine turns the higher the pressure. Pressure will go up to about 90psi. My engine temp starts climbing the faster I go,up to around 190 degrees on flat road. I have done just about everything else to keep her cool, and was wandering if too much oil pressure might have something to do with water temp |
jim mci-9 (209.240.205.60)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, January 17, 2004 - 1:24 pm: | |
first make sure that you are really this hot...either put a mechanical gage in the thermostat housing or use an infrared heat gun..... and put a mechanical gage on the oil pressure at one of the oil galleys on the side of the engine block under the heads to verify that you really have that much pressure... if you have electrical gages, i think you might have a bad ground somewhere... |
Sam Sperbeck (204.248.119.254)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, January 17, 2004 - 3:21 pm: | |
Hi Steve,
I have never heard of a correlation between oil pressure and coolant temperature. I think you have two seperate issues here and I would approach them seperately. As Jim says, check your gauges first to see if you really have an oil pressure and heating problem. Then report back here what you learned and we can go from there.
Thanks, Sam Sperbeck
La Crescent, MN |
jim mci-9 (209.240.205.60)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, January 17, 2004 - 4:35 pm: | |
reason i suggsted the bad gound is:::; i changed the electric windshield wiper motor on my '86 f150 ford supercab.... i didn't hook up a ground wire..(missed it in the dark).... all the gages pegged out....i worried about overheating, hi oil pressure...(same symptoms youv'e got)... then i found the wire hanging... hooked it up... and gages worked correctly... |
Dale and LaShawn Hendricks (Lamichelle37) (67.9.67.85)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, January 17, 2004 - 7:22 pm: | |
Hi Steve,
You did not mention if you are trying to drive 80 or just 60. The oil pressure will climb with higher rpm's and the temperature will run a little higher at max rpm's even though 190 is not real high. Just my thoughts. |
BrianMCI96A3 (65.40.154.171)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Saturday, January 17, 2004 - 10:33 pm: | |
First, of all there is NO correlation between high oil pressure and coolant temerature!
It seems there is a problem at the sensor, perhaps a poor connection or a bad ground somewgere as was suggested, installing a mechanical gauge to test your pressure sounds like a plan to me.
"I have done just about everything else to keep her cool."
Umm, what exactly is everything else?
If you detail what you have done, there may be something you missed, that we can suggest you try.
Brian |
Steve Tissot (68.193.164.62)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, January 18, 2004 - 6:29 pm: | |
Thanks for the replys.As far as what I have done: 2 new thermostates, water pump, radiator cleaned with 2 returns installed in top, larger fan and more blades,new belts, new temp gauge, new grounding to gauge, new sending unit. Have installed mech.gauge in themostate housing, reads same as electricial, put a sending unit in both thermostate housings with a switch at gauge to flip reading temp from both sides of engine while going down the road. Temp read same.
Running down the road over 65mph the temp will start going up to around 190 @1750rpm. When I start climbing hill she will rise higher, sometimes 200 degrees and this is in NJ were the hills are not real long. It has gone over 205 going the pan handle of Maryland.
I had a 692t green engine will less hp maybe 25 to 30 less and engine always ran 180 to 185.
I am hooked up to a Allison 740 and it is water cooled through a heat exchanger between radiator and water pump. This is the same set up I had with old engine and worked fine.
Its a lot of work, but I can put in a trans cooler behind my radiator if it would work. Steve |
jim mci-9 (209.240.205.60)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Sunday, January 18, 2004 - 8:00 pm: | |
how much flow loss are you experiencing across the trans cooler??... is there a way to hook up a pressure gage on both side of the heat exchanger???...to measure water pressure??... and is the oil in the cooler going the opposite way from the water flow???...the flows should go against each other.... |
Jim Stacy (32.101.44.54)
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, January 19, 2004 - 3:11 pm: | |
If the trans top gear clutch is slipping it will dump lots of heat into the engine coolant. The engine will run hot under modest loads. Do you have a trans temp gage?
Get a handheld remote laser pointed thermometer (less than a $100) and find out where the hot spots are.
A large Hayden cooler on the outside of your radiator will work. My tranny fluid returns to the transmission at about 145 on a warm day after leaving the cooler. 6V92 @350 hp, V730.
HTH
Jim Stacy |