Couple of questions
Couple of questions Greetings all,
I have a couple question related to my engine parameters that I have begun to notice since I have bought a ScanGaugeII to read my OBDII info.
Yesterday was ~60 degrees F outside and while driving down the highway at ~70mph, my intake air temp was reading 95 degrees F. Is it normal to have intake temps 30+ degrees hotter than ambient air? I am running a Spectre cold air intake kit for a truck, and have the filter positioned where the battery used to be (in front of the front passenger wheel).
On the same drive my trans temp rose to 140 degrees F. I know that is an OK temp but I am a little worried about 100 degree F days in the summer and would just like to know at what temperature I should start to worry? Trans is a 2003 4l80e with just an external cooler (tube and fin) approximately 12" x 10" in size
The gauge also reads A/F and it was steady at 14.6. I'm not really sure if this is a good or bad value, just wanted to check with the pros. Sometimes my exhaust smells rich but other times not so I have been keeping an eye on the gauge which always seems to read 14.6.
Thanks for any help,
Mike
I have a couple question related to my engine parameters that I have begun to notice since I have bought a ScanGaugeII to read my OBDII info.
Yesterday was ~60 degrees F outside and while driving down the highway at ~70mph, my intake air temp was reading 95 degrees F. Is it normal to have intake temps 30+ degrees hotter than ambient air? I am running a Spectre cold air intake kit for a truck, and have the filter positioned where the battery used to be (in front of the front passenger wheel).
On the same drive my trans temp rose to 140 degrees F. I know that is an OK temp but I am a little worried about 100 degree F days in the summer and would just like to know at what temperature I should start to worry? Trans is a 2003 4l80e with just an external cooler (tube and fin) approximately 12" x 10" in size
The gauge also reads A/F and it was steady at 14.6. I'm not really sure if this is a good or bad value, just wanted to check with the pros. Sometimes my exhaust smells rich but other times not so I have been keeping an eye on the gauge which always seems to read 14.6.
Thanks for any help,
Mike
Unless you have some sort of ram air set up going straight to your air cleaner it's noemal for the inlet air temps to get that warm. It's better if they're cooler, but still, fairly normal. On your trans temp, it's cooled by the radiator, so it generally won't be any cooler than your coolant. Do you only have an external cooler? If you do, I still wouldn't think 140 is anywhere near hot. And 14.6 on your A/F is normal.
On my 93 s10, I read ambient temps while moving and my filter is right in front of the passenger tire. I suppose I get a good flow of air from the headlight bucket to see that low of a temp. When idleing at a red light, I occasionally see 100f. See if you can duct some fresh air or possibly build a partition to isolate the filter from the engine compartment. It should help a lot.
That all looks normal. The trans is even a little cool. Wont even lock up until it gets over 100 degrees. Dont worry about trans temp unless it gets above coolant temp. Probably wont do that unless you're towing.
Thanks for the info guys. For the record I am NOT using the trans cooler in the radiator and ONLY running an auxillary cooler. Last summer the car did fine but now that I have a guage to make me worry I thought I'd ask what the "danger zone" if for the trans. I am hoping that my cooler is enough keep it safe...might switch up to a plate style over the tube and fin design if I see consistent temps over 200 degrees.
If my intake air temps keep on the trand of 30 degrees above ambitent I think I will be trying to figure out a way to section off the filter or duct in cold air better. Filter sits within the engine bay but should have good air flow from the headlights but I guess not good enough. Might try a cheap (flex hose) redesign an see where I can pull the coolest temps from.
If my intake air temps keep on the trand of 30 degrees above ambitent I think I will be trying to figure out a way to section off the filter or duct in cold air better. Filter sits within the engine bay but should have good air flow from the headlights but I guess not good enough. Might try a cheap (flex hose) redesign an see where I can pull the coolest temps from.
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If it cools adequately then I'd say you're alright, but if it doesn't, then I would hook it to the radiator and use the other cooler in series with it. I generallly put function before looks, but that's just me.
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Not sure cooler brand; all I know is that it is tube and fin style. What B&M cooler do you have?
I am going to use 200 degrees as my benchmark for whether or not my cooler is big enough; if anyone thinks this is too low/high of a temp please speak up.
I know that a cool trans is a happy trans, so I may add my radiaor cooler to the loop and see how much of a difference it makes. But for the time being that plan is on the back burner because the Monte is pulling daily duty right now. Its a plan for the near future if I find my cruising temps are beyond 200 on a regular basis.
I am going to use 200 degrees as my benchmark for whether or not my cooler is big enough; if anyone thinks this is too low/high of a temp please speak up.
I know that a cool trans is a happy trans, so I may add my radiaor cooler to the loop and see how much of a difference it makes. But for the time being that plan is on the back burner because the Monte is pulling daily duty right now. Its a plan for the near future if I find my cruising temps are beyond 200 on a regular basis.
I'd have to look up the number, it is the one everyone buys.. The big one.
IIRC they actually suggest to only run their cooler and bypass the factory cooler.
My car was originally an M6 car so not much choice.
IIRC they actually suggest to only run their cooler and bypass the factory cooler.
My car was originally an M6 car so not much choice.
In looking at my cruising temps this morning I'm tempted to say that one would be better off bypassing the rad cooler. My trans this morning didn't get past 150 degrees F. If I had it plumbed into the radiator, the engine coolant would have actually been HEATING my trans, not cooling it. If the fluid then went to the cooler, it would have to drop the temp by 30 degrees to keep the temp down where it runs with just the cooler connected...