G35 Engine Cooling Temp a little hot...I think
#31
12-15-2015, 09:26 PM
I think I know what's the problem:
1) I have a short aftermarket headers
2) exhaust sound is higher especially on the front
3) I lost torque because I used to drift much easier at 1st and 2nd gear at low rims
4) AIT is higher causing higher ECT... this means that backpressure air is becoming hot going to the engine.
All these make me assume that the exhaust leak is at the begining between headers and engine and creating this additional heat. Tomorrow I'll go to the exhaust guy and let him check the place I feel theres something wrong and I'll get back 2 u guys and tell update you but I'm feeling I found it
1) I have a short aftermarket headers
2) exhaust sound is higher especially on the front
3) I lost torque because I used to drift much easier at 1st and 2nd gear at low rims
4) AIT is higher causing higher ECT... this means that backpressure air is becoming hot going to the engine.
All these make me assume that the exhaust leak is at the begining between headers and engine and creating this additional heat. Tomorrow I'll go to the exhaust guy and let him check the place I feel theres something wrong and I'll get back 2 u guys and tell update you but I'm feeling I found it
#32
12-15-2015, 10:54 PM
#33
12-16-2015, 04:45 PM
#34
12-16-2015, 04:51 PM
do you think mishimoto racing thermostat will solve my problem?
#36
12-16-2015, 05:03 PM
#37
12-16-2015, 05:07 PM
#38
12-16-2015, 05:11 PM
#40
12-16-2015, 05:23 PM
#41
12-16-2015, 06:53 PM
Your short-ram air intake could be causing slightly elevated engine temps. If you still have the factory intake, try swapping that on and driving for a few days to see what your temps are like.
Are you using the right coolant mixture and right type of coolant?
#42
12-17-2015, 03:07 AM
Are you using a stock thermostat as is?
Your short-ram air intake could be causing slightly elevated engine temps. If you still have the factory intake, try swapping that on and driving for a few days to see what your temps are like.
Are you using the right coolant mixture and right type of coolant?
Your short-ram air intake could be causing slightly elevated engine temps. If you still have the factory intake, try swapping that on and driving for a few days to see what your temps are like.
Are you using the right coolant mixture and right type of coolant?
2) don't think the air intake because I have been running this for years and I had no problems before.
3) yes using the right mixture and right type of coolant.
I'm now thinking about the ECT sensor because the car after being parked overnight goes fast to normal temp
#43
12-17-2015, 02:36 PM
Correct my analysis
Hello guys, if you can please help me. I have a G35 coupe 2003 with almost all NA mods (bolt ons). The problem is that the engine coolant temp is a hot I think like the guy before. There's no overheat (it's in the middle) but I have a digital gauge attached to the obd2 and it shows the temp reaching 96 degrees celcius (205 F) and when the fans start the degrees will go to 87 C (188 F). I changed the water pump, thermostat (stock), changed the radiator cap, cleaned the radiator, bleeded the cooling systerm and flushed it, almost did everything but it's still the same. I'm getting a Mishimoto thermostat because I know other thermostats are not good. No smoke from exhaust and no mixing of coolant and oil. Could it be the Uprev remap because it was done when I used to have the "PREVIOUS" racing mishimoto thermostat? Should I continue driving the car until it overheats? Coolant level is the same btw, No leaking???? :S Please help guys
The engine coolant temp is high when the Air intake temp is high especially when I'm in traffic or car is moving. Ect reaching 96 and AIT reaching 70 while outside the weather is 15. So 1) high AIT 2) bad gas mileage 3) engine sound a bit higher. I went to this analysis. The hot air coming out of the engine is leaking and not going through the headers and is coming back 2 engine causing high temps that the sensor is reading.
These maybe missing or blown away.
Here is the leak causing heat problem.
Anyone can tell me if my analysis is correct?
Thanks for the help guys
#44
12-17-2015, 03:42 PM
Hello guys, if you can please help me. I have a G35 coupe 2003 with almost all NA mods (bolt ons). The problem is that the engine coolant temp is a hot I think like the guy before. There's no overheat (it's in the middle) but I have a digital gauge attached to the obd2 and it shows the temp reaching 96 degrees celcius (205 F) and when the fans start the degrees will go to 87 C (188 F). I changed the water pump, thermostat (stock), changed the radiator cap, cleaned the radiator, bleeded the cooling systerm and flushed it, almost did everything but it's still the same. I'm getting a Mishimoto thermostat because I know other thermostats are not good. No smoke from exhaust and no mixing of coolant and oil. Could it be the Uprev remap because it was done when I used to have the "PREVIOUS" racing mishimoto thermostat? Should I continue driving the car until it overheats? Coolant level is the same btw, No leaking???? :S Please help guys
I noticed from the scanner that my engine coolant temp is increasing when my Intake Air Temp is high reaching 140 degrees F while outside it's cold like 59 degrees F. I read a thread that the air condenser might be dirty and blocking cold air from coming inside and also I have a short air intake and I don't have an air intake duct installed which I guess will increase air intake. Could be the air condenser clogged? Because 2 mechanics have seen the car and told me it's normal and asked me to stop looking at the digital gauge :s. What do you suggest? I don't feel the car is fine
A major problem with short ram intakes is that they heat soak and suck in hot engine bay air.
I don't see how an exhaust leak will cause your engine to overheat, maybe run and sound like crap, but not related to coolant temps.
Where is the stock temp gauge in the dash? Is it in the middle or creeping to hot? If it's in the middle, you need to stop and look to some other issue.
#45
12-17-2015, 03:46 PM
Your temps are fine, I'd suggest you listen to what 2 mechanics have told you. Make sure air is completely bled by opening that bleeder valve behind the engine, it may take a few heat cycles to get all the air out.
A major problem with short ram intakes is that they heat soak and suck in hot engine bay air.
I don't see how an exhaust leak will cause your engine to overheat, maybe run and sound like crap, but not related to coolant temps.
Where is the stock temp gauge in the dash? Is it in the middle or creeping to hot? If it's in the middle, you need to stop and look to some other issue.
A major problem with short ram intakes is that they heat soak and suck in hot engine bay air.
I don't see how an exhaust leak will cause your engine to overheat, maybe run and sound like crap, but not related to coolant temps.
Where is the stock temp gauge in the dash? Is it in the middle or creeping to hot? If it's in the middle, you need to stop and look to some other issue.