steve06mcss

Hey guys, I need a little help verifying all my temps are correct. I recently got a aeroforce interceptor, and after a hour drive in 86 degree weather, trans temp went up to about 185 Max which I'm fine with( stage 3 TEP trans and Hayden 679 cooler.) But my oil temp is reading 220* (oil t calc) and my coolant temp is right around 200* . Battery voltage is between 12.5 and 14.5 while driving or at idle. I know voltage is off but the new alternator didn't help that. Any ideas as to if the rest of the temps are OK?
Thanks for any and all help.

91parkave

iTrader: (4)

Since there is no actual oil temp sensor there calculated from various sources on what it might be. That is right about normal though. Also coolant is right where it should be for a stockish car. Voltage will always fluctuate depending on load on the charging system it is not steady state like old school systems are.

spawne32

iTrader: (2)

We have variable rate alternators, i initially panicked too first time testing my alternator and seeing it charging at 12.7v, soon as you put a load on it though it should begin to ramp up to a higher voltage. With my smaller battery and my fans being consistently on, i have seen voltages as high as 15v in the dead of the winter in sub 20 degree weather. 185* is great for trans temps, even with my trans cooler i can see upwards of 210* from my high stall. Part of the reason im going with a dex3/racing atf mix this month.

steve06mcss

Thanks for the help man. I'll have to keep an eye on the voltage while driving. I know it's a little off but it could just be the reman alternator I put on a few months ago.

steve06mcss

Thanks man, glad to know everything is alright. I have a bunch of stuff going in soon. Cam, headers, ls1 intake, ported throttle body, etc. What kinda temps you think I should be seeing with those kinda mods? What would be too high temp wise with mods?

spawne32

iTrader: (2)

they shouldnt effect your temps at all as far as im concerned

Sint3k

The voltages sound fine to me, the voltage will vary from 12.5 to 15. Normally after a long sit ,"few days" mine will charge 14.5 for roughly 45 minutes or so, then after that voltages are all over the place. The computer controls the pulse width modulation to the alternator to control its output, based on draw and the pwm to the alternator you will see voltages all through that range. The computer is also able to read amp draw etc, anyways.

The only real way to test is to put a high load on the vehicle and test the amp output on the alternator wire, and see if you are getting near its rated output.

steve06mcss

Thanks man. That's useful info. Just finished a 8 hour drive. With the last 1-2 hours being up hill in through the great smokie mountains( north Carolina side of Appalachian mountains.) And the highest trans temp got was 211* and engine t call never above 230*. So I'm gonna say everything is just fine. Car only had maybe 30 minutes of rest during 8 hours of driving. I'm very pleased with how well it did.

91parkave

iTrader: (4)

230 is a bit warm. In my opinion even for summer granted I'm tuned but I dont see more than 200 ever.

steve06mcss

Any ideas on how to bring down that temp? I know it's just calculated and not actual but it would give me peace of mind.

spawne32

iTrader: (2)

with hptuners you can readjust the way the fans operate, and generally speaking unless your in a climate that see's sub zero temps frequently during the winter, a 70 water 30 antifreeze mix with water wetter or purple ice will net you at least 10-20 degrees cooler on average.

steve06mcss

I've got the tune from overkill, I know he has the fans coming on early, which is why I thought it was odd it was still kinda high.